Jeep wrangler p0300

Just picked up my 2019 3.6, used from a dealership. Drove it at least 200 miles without issue. Did notice auto start stop wasn’t functioning but didn’t bother me. Two days ago, I filled it up with fuel. The following day, drove about 40 miles and then got random multiple misfires with shudder...

Super secret hidden bonus brake lathe video! https://youtu.be/T4ugvdgaoHYCheck out my Merchandise Store Below the video for Men's and Women's Apparel, MUGS a...It is a 2005 rubicon unlimited 4.0L. 165,000 miles. I can feel a slight studded when it is in idle. (Sometimes it's more than slight but that is rare.) It throws the 0300, 0304, 0306 pcodes. 0306 was the original cod thrown. Over time it began throwing the 0300 and 0304. 0306 comes back first before 0304 after a reset.Jul 20, 2019 · P0300 can't be tackled. Hello everyone! 2006 Jeep wrangler 2.4l 4 cylinder 101k miles. Got P0300 code and have replaced wiring harness (dealership), PCM (dealership), MAP (duralast), spark plugs (NGK Plat), going to change ignition coil and coil plugs next. TPS & MAF sensor changed within the last 10 months. Oct 25, 2016 · Felt the motor weird today on my way home today, like it was missing power under light throttle, and actually having a misfire, confirmed by the engine light in the dash flashing. I pulled the codes when i got home, and i'm showing P0152 and P0300. P0152 is bank 2 sensor 1. so Bank 1 should be clylinder#1 side, or front passenger. During this period of self-quarantining, you might feel like you're on house arrest, just without the angle bracelet. But how similar is it really? Advertisement Whether you're off...My 2012 Jeep JKU with about 85k miles, keeps having issues with misfiring, codes P0300 / P0301 / P0303 / P0305 keep popping up. At first I thought it could be spark plugs and/or ignition coils, so i changed all of them to new. I used NGK spark plugs and ignition coils. Ran fine for about 50 miles and then one of the misfiring codes popped up.The codes it pulled from that were P0300 multiple misfire and P0152 Bank 2 position 1 O2 sensor high voltage. I added some displays to the Torque app to look at my O2 voltages and found this - O2 bank 2 position 2 is at 0.0V and bank 1 is at 1.3V. The bank 1 sensors are right at 0.85 ish volts.Dec 6, 2018 · Jeep Wrangler P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the ...

Jan 31, 2021 · 2012 Jeep Wrangler P0300 issues. We have checked literally everything and the shaking and vibrating is still an issue. We have checked all heads, replaced all sensors, spark plugs, fuel sensors, have done leak down tests, pulled every single cylinder out and nothing is wrong with any of them. The mis fire happens to all cylinders randomly and ... Aug 28, 2016 · Got the p0300 misfire code on my 2008 Jeep JK 157k, replaced the plugs, wires and coil, seemed to be somewhat better but the power does not seem to be right, and then going up a hill on the interstate about 70 it would not accelerate and the cel light came on blinked 3 times then cel light went out and seemed to drive fine. now it seems to ... Mar 20, 2012 · Misfire help... P0300, P0303, P0304. My 01 TJ's engine light came on. So igot the codes. And got p0300 p0304 an p0304. I'm planning on taking it to a shop asap but it probably won't be until next week. It will run perfect... Until I stop, shut it off and let it set for 5-10 mins then when I start it usually takes 2 try's to start it and it runs ... This was unsuccessful at solving the issue. I checked the engine code and got code P0344. I looked up the code on the internet and found that it was a Cam Position Sensor that was the likely culprit of the issue. June 9th: The next day I stopped in to my local Dodge Dealership to purchase a replacement CPS.Today while in gear and at a stop light (foot on brake) engine was shaking pretty good and the check engine light was flashing and beeping (according to the wife). I …

Engine is still running, I can accelerate, downshift gears, etc., but I pull over to get my code reader out. I get the following codes: P0300 - Random misfire. P0315 - Crankshaft Position Sensor not learned. P0335 - Crankshaft Position Sensor Circuit. I clear the codes and start it back up to see if it's a fluke issue.2014 Grand Cherokee Ltd 3.6L V6. 24,500 miles. Hello all, a few nights ago, I took a 1/2 mile drive to the grocery store, and when I finished shopping and started my GC to head home, I noticed that it was running very rough and the accelerator was intermittently unresponsive. On the brief ride home, the CEL illuminated and started blinking.Save money, experience more. Check out our destination homepage for all discounts, tips, and planning guides for Disneyland in California! Read now Take advantage of exclusive Mick...P0300 code denotes “Random or Multiple Cylinder Misfire Detected.”. This diagnostic trouble code (DTC) implies that your car’s computer detected random or multiple-cylinder engine failures. Along with P0300, you’ll probably see another OBD-II code, ranging from P0301 to P0308. All these codes indicate engine misfires.

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The first time it happened I had P300, P301, P303, P305, P306. Like. Jerry Bransford. 76902 posts · Joined 2003. #4 · May 4, 2021. Multiple misfires can be caused by a bad crankshaft position sensor, a bad O2 sensor, a bad pre-catalytic converter, or even the wrong technology spark plugs having been installed.P0300 - Missfire P0305 - Cylinder 5 Missfire p0306 - Cylinder 6 Missfire p0456 - EVAP leak p0432 - Bank 2 Downstream 02 Sensor Quite a lot of codes. So I went to my local part store and purchased a Bosch 02 downstream sensor for my p0432 code. Replaced 02 and all the codes went away. I took the jeep for a test drive and guess what.Any help with P0172/P0175. First got CEL for #1 misfire and#1 injector circuit fail. Replaced all injectors, plugs, and coil packs. Parts from Amazon. Injectors looked like OE. Who knows. Those CELs are gone and now I'm getting P0172/P0175 for running rich. I don't really want to have the dealer run diagnostic on it, but I'm almost there.Jan 31, 2021 · 2012 Jeep Wrangler P0300 issues. We have checked literally everything and the shaking and vibrating is still an issue. We have checked all heads, replaced all sensors, spark plugs, fuel sensors, have done leak down tests, pulled every single cylinder out and nothing is wrong with any of them. The mis fire happens to all cylinders randomly and ... 46277 posts · Joined 2012. #2 · Feb 5, 2024. Welcome to the Forum! How to diagnose a P0300 fault code. To diagnose the fault code, you should use a scan tool to check for the additional codes that indicate which cylinder is affected. You will then want to test the spark plugs, fuel injectors and ignition coil.

Every time I pull the following codes p0300,p0303,p0304, general misfire, and misfire on cylinders 3 and 4. The following items have been confirmed to be properly working: plugs, wires, cap, rotor, o2 sensors, injectors, fuel pressure OK. Here is one more thing, after erasing the codes the jeep runs great for the next drive.Replacing worn or damaged weather stripping around exterior doors will save money on your energy bills. Expert Advice On Improving Your Home Videos Latest View All Guides Latest Vi...P0132 is a common OBDII code that occurs in many vehicles, including the Jeep Wrangler. The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more. The air fuel sensor stays in rich biased mode for too long. There are also some less likely problems that can cause P0132.P0300 is the only code you have? Can you get the freeze frame data? Gasbuggy. Thread starter. Joined. Aug 26, 2009. Messages. 3,037. Location. PA. Mar 2, …Misfires, rough idle, P0300, p0174, p2099. Last year 2018 in June I had these same codes come up with really rough idle. I changed spark plugs and wires and it came back a month later. I took it to a mechanic and he couldn't find anything wrong with it.=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code JEEP P0300 Saving Repai...The stock market represents the companies that list equity shares for public investors to buy and sell. Stock exchanges are the infrastructure that facilitate the trading of those ...When it comes to finding the perfect pair of jeans, Wrangler is a name that stands out. With a wide selection of styles and fits, it can be difficult to know which pair is right fo...A forum community dedicated to Jeep Wrangler owners and enthusiasts. Come join the discussion about reviews, performance, trail riding, gear, suspension, …1198 posts · Joined 2013. #2 · Nov 26, 2014. OBD-II Trouble Code: P0300 Random/Multiple Cylinder Misfire Detected. OBD-II Trouble Code: P0301 Cylinder 1 One Misfire Detected. OBD-II Trouble Code: P0306 Cylinder 6 Six Misfire Detected. Disclosure: Affiliated with PR0D1GY P3RF0RMANC3. This is my personal account.Mar 12, 2018 · 3 posts · Joined 2018. #1 · Mar 12, 2018. Check engine lights P2305 and P0300 for ignition coil 2 secondary circuit and multiple cylinder misfire. So far I have replaced plugs, wires and coil. Still have check engine light and misfire. Wondering if anyone had similar problems and what they did to solve. Or any suggestions on where to go next. 1997 Jeep Wrangler P0300, p0301, p0302, p0303, p0304, p0305, p0306. I just took my 97 wrangler through inspection and they told me that I failed emissions. I looked up the codes, p0300 -p0306 and they say that I have firing issues on all six of my cylinders. I am experiencing no symptoms at all. The Jeep runs like a champ, and I have …

A code P0300 may mean that one or more of the following has happened: Faulty spark plugs or wires. Faulty coil (pack) Faulty oxygen sensor (s) Faulty fuel injector (s) Burned exhaust valve. Faulty catalytic converter (s) Stuck/blocked EGR valve / passages. Faulty camshaft position sensor.

The check engine light came on which turned out to be a P0300 code (Random/Multiple Cylinder Misfire Detected) The car runs fine. The code popped up again a couple of weeks later and I again cleared the code. Truck still runs fine. One of the local dealers wants $169.00 to diagnose (hook it up to a computer) the code and let me know …Dec 15, 2018 · 2007 Jeep rubicon 3.8 misfire. 2007 3.8 Liter v6 rubicon no upgrades all stock throwing code # p2302 ignition coil A secondary circuit. I replaced coil pack , wires, plugs, and crank shaft sensor and still has two misses on the spark plugs in the center of the coils. P0306 is certainly a cause for concern, and should be considered a threat to the drivability your Wrangler. The nice thing about P0306 is that it’s a cylinder specific trouble code, which makes diagnosing the problems much more simple than P0300, which means that the cylinders are randomly misfiring.. It will often be accompanied by codes …It's hard to feel the misfire when under throttle, but you can hear and feel the slight misfire trembles when at idle. What I've tried so far: - New Spark Plugs: (2 set's - 6 NKG & 6 Champion) Properly Gapped. - New Coils: MSD. - New O2 Sensors (all 4 - both sides) - New Crankshaft Position Sensor. - New MAP Sensor.P0300/p0302/p0303. 2004 Lj 4.0 Auto. I had a rough idle that seemed to be getting worse, yesterday I threw in a can of seafoam in the tank and today I cleaned the TB while it was running. A lot of crap washed out if the TB and it was actually ideling pretty good. I took it for a ride and was out for about an hour or two with it.Engine Performance problem 1997 Jeep Wrangler 6 cyl Four Wheel Drive Manual i have a 1997 jeep wrangler with 4.0l i-6 iam getting a p0300 dtc I have replaced all ignition componets including the camshaft position sensor I ran compression check on all cylinders and they all were above 158 psi also checked fuel pressure which was in spec the …Jun 16, 2016 · i would like to capture in a single thread anyone who has had an incident with their late build 2015/2016 wrangler with the 3.6 Pentastar engine. (CEL or thrown code) ENGINE MISFIRE CODES. P0300 - Multiple Cylinder Misfire. P0301 - Cylinder 1 Misfire. P0302 - Cylinder 2 Misfire. P0303 - Cylinder 3 Misfire. P0304 - Cylinder 4 Misfire. 2,871. Location. CT, United States. Jul 2, 2018. #2. Ted05Rubi said: Our 05 Rubicon has had no engine work or parts changed since we bought it 500 miles ago. It just turned 82,000 when the engine light came on, and …Mar 10, 2020 · Any help with P0172/P0175. First got CEL for #1 misfire and#1 injector circuit fail. Replaced all injectors, plugs, and coil packs. Parts from Amazon. Injectors looked like OE. Who knows. Those CELs are gone and now I'm getting P0172/P0175 for running rich.

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29 posts · Joined 2016. #1 · Jun 6, 2016. The engine malfunction light came on this weekend (only 600 miles on the JKU) and it turned out to be a PO300 code for misfire. It stayed on through a few cycles and I got it scanned at a local O'Reillys. It's not on now - not sure if it went off itself or if O'Reilly cleared it.During this period of self-quarantining, you might feel like you're on house arrest, just without the angle bracelet. But how similar is it really? Advertisement Whether you're off...2018 Jeep Wrangler Rubicon Unlimited Aug 22, 2022 #8 JL MADDOG said: P0300 is a random misfire code not specific to any particular cylinder. Try the following: 1. Make sure all your plugs are tight, 2. Check the wires to make sure they are secure and firmly attached, 3.Engine is still running, I can accelerate, downshift gears, etc., but I pull over to get my code reader out. I get the following codes: P0300 - Random misfire. P0315 - Crankshaft Position Sensor not learned. P0335 - Crankshaft Position Sensor Circuit. I clear the codes and start it back up to see if it's a fluke issue.5366 posts · Joined 2010. #1 · Dec 28, 2012. P0300, P0355 & P0339 with stumbling? I'm getting codes P0300, P0335 and P0339. I had to try and start the vehicle two or three times, and it won't rev passed 2500rpm or so (somewhere around there). It just stumbles or rev-limits and won't let it pass that RPM, in neutral or in gear, or in gear with ...Dec 28, 2012 · 5366 posts · Joined 2010. #1 · Dec 28, 2012. P0300, P0355 & P0339 with stumbling? I'm getting codes P0300, P0335 and P0339. I had to try and start the vehicle two or three times, and it won't rev passed 2500rpm or so (somewhere around there). It just stumbles or rev-limits and won't let it pass that RPM, in neutral or in gear, or in gear with ... Are you in search of the perfect off-road vehicle that can handle any terrain? Look no further than a Jeep Wrangler. Known for its ruggedness and versatility, the Jeep Wrangler is ...Dec 6, 2018 · Jeep Wrangler P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the ... P0300 - Multiple/Random Cylinder Misfire. For a while, my check engine light would come on, and then go away after a while. My OBDII+Torque read P0300 and P0306. So Random/Multiple Misfires, and Cylinder 6 Misfire. I went ahead and changed out all the plugs and wires, as well as the coil pack. The light went away for a couple of weeks.P0300 can't be tackled. Hello everyone! 2006 Jeep wrangler 2.4l 4 cylinder 101k miles. Got P0300 code and have replaced wiring harness (dealership), PCM (dealership), MAP (duralast), spark plugs (NGK Plat), going to change ignition coil and coil plugs next. TPS & MAF sensor changed within the last 10 months. ….

Either one or sometimes multiple misfiring codes (P0300 / P0301 / P0303 / P0305). I tried buying new coil and plugs for the ones misfiring but same thing. Drives good for 20 -75 miles, then misfire code. Ive taken this to 3 mechanics so far and have not been able to pinpoint the problem. Ive tried replace O2 sensors, replaced ECU computer, leak ...February 1, 2023 by Jason. P0301 is a fairly common trouble code with the Jeep Wrangler. It’s an OBD2 code and indicates that your vehicle’s first cylinder is misfiring. P0301 is certainly a cause for concern and should be considered a threat to the drivability of your Wrangler. Fixing P0301 should be considered a high priority.Frustraded P2305 and P0300 code. I have a 2008 Jeep Wrangler Unlimited Sahara. It is giving me a P2305 and P0300 code and the check engine light is on. I have replaced the plugs, wires, ignition coil, crankshaft position sensor, and the camshaft position sensor. When idling in park it doesn't sound like it's misfiring.2019 Jeep Wrangler Rubicon JLU take off suspension. The Jeep has the tow package and dual top group. The full suspension was removed at 1100 miles with no...1198 posts · Joined 2013. #2 · Nov 26, 2014. OBD-II Trouble Code: P0300 Random/Multiple Cylinder Misfire Detected. OBD-II Trouble Code: P0301 Cylinder 1 One Misfire Detected. OBD-II Trouble Code: P0306 Cylinder 6 Six Misfire Detected. Disclosure: Affiliated with PR0D1GY P3RF0RMANC3. This is my personal account.Save money, experience more. Check out our destination homepage for all discounts, tips, and planning guides for Disneyland in California! Read now Take advantage of exclusive Mick...This was unsuccessful at solving the issue. I checked the engine code and got code P0344. I looked up the code on the internet and found that it was a Cam Position Sensor that was the likely culprit of the issue. June 9th: The next day I stopped in to my local Dodge Dealership to purchase a replacement CPS.A code P0300 may mean that one or more of the following has happened: Faulty spark plugs or wires. Faulty coil (pack) Faulty oxygen sensor (s) Faulty fuel …Left "dealer" and below happened. The below paragraphs are from an old post I left on the intraweb. 4/20/16. New 7 miles and MIL CODE P0300 multiple misfire. What's the deal with this, Just picked up my 2016 auto jku rubi. Driving home from dealer, I noticed the MIL check engine light and I connected my diagnostic tool, and it showed … Jeep wrangler p0300, 3 posts · Joined 2018. #1 · Mar 12, 2018. Check engine lights P2305 and P0300 for ignition coil 2 secondary circuit and multiple cylinder misfire. So far I have replaced plugs, wires and coil. Still have check engine light and misfire. Wondering if anyone had similar problems and what they did to solve. Or any suggestions on where to go next., Every time I pull the following codes p0300,p0303,p0304, general misfire, and misfire on cylinders 3 and 4. The following items have been confirmed to be properly working: plugs, wires, cap, rotor, o2 sensors, injectors, fuel pressure OK. Here is one more thing, after erasing the codes the jeep runs great for the next drive., In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors. Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code., Jeep Cherokee 4.0L "Code P0300" Jump to Latest Follow 32K views 3 replies 3 participants last post by KamekLocked Sep 24, 2008, What is the P0300 code in the context of a Jeep Wrangler? It’s an OBD-II generic code indicating a random or multiple misfire in the engine. How can I identify if my Jeep Wrangler is affected by the P0300 code?, #1 · Jan 31, 2021. 2012 Jeep Wrangler P0300 issues. We have checked literally everything and the shaking and vibrating is still an issue. We have checked all heads, replaced all …, Painting the outside of your house yourself can seem daunting, but you can save a lot of money. Learn how at HowStuffWorks. Advertisement A fresh coat of exterior paint can transfo..., The causes of P0340 in the Jeep Wrangler can vary and go beyond the camshaft position sensor itself. Some possible causes include: A faulty camshaft position sensor. Damaged or corroded wiring and connectors. Timing chain or belt issues. Mechanical problems with the camshaft or crankshaft. Problems with the powertrain …, Apr 19, 2018 · The P0300 is a misfire, maybe you have a plug wire that isn’t seated right and the moisture is shorting something. It would go away with heat from the engine. You could try replacing your plug wires. P2096 is a downstream code for too lean. Until you sort the misfire you can probably ignore this. , Left "dealer" and below happened. The below paragraphs are from an old post I left on the intraweb. 4/20/16. New 7 miles and MIL CODE P0300 multiple misfire. What's the deal with this, Just picked up my 2016 auto jku rubi. Driving home from dealer, I noticed the MIL check engine light and I connected my diagnostic tool, and it showed …, 46277 posts · Joined 2012. #2 · Feb 5, 2024. Welcome to the Forum! How to diagnose a P0300 fault code. To diagnose the fault code, you should use a scan tool to check for the additional codes that indicate which cylinder is affected. You will then want to test the spark plugs, fuel injectors and ignition coil., 2007 JK random P0300 code intermittently. I have a 2007 wrangler with 3.8L. Recently did a lot of work on the entire jeep it is at 164,000 miles. Replaced cats, 02 sensors, timing chain, exhaust manifolds, upper-oil pan gasket, valve cover gaskets, intake gaskets, head gasket on the drivers side of the engine (only removed the head because …, Oct 26, 2009 · J. johnd85053 Discussion starter. 5 posts · Joined 2007. #1 · Oct 26, 2009. Executive Summary: You may need to cut-out connectors and directly solder wire ends together to solve your sensor-related problems that cause P0300 thru P0306 codes, or the P1391 code. Lets Start off by asking do any of these below OBD-II codes apply to you? -Codes ... , Either one or sometimes multiple misfiring codes (P0300 / P0301 / P0303 / P0305). I tried buying new coil and plugs for the ones misfiring but same thing. Drives good for 20 -75 miles, then misfire code. Ive taken this to 3 mechanics so far and have not been able to pinpoint the problem. Ive tried replace O2 sensors, replaced ECU computer, leak ..., So, long and convoluted story: For a while, my check engine light would come on, and then go away after a while. My OBDII+Torque read P0300 and P0306. So Random/Multiple Misfires, and Cylinder 6 Misfire. I went ahead and changed out all the plugs and wires, as well as the coil pack. The light went away for a couple of weeks., Engine misfire. How to fix a random misfire in your car DIY with Scotty Kilmer. How to stop random engine misfire code P0300 with check engine light on. Engi..., P0300 "Multiple Cylinder Misfire" I work out of state on a week on / week off basis, so last week I drove a different vehicle and left the Jeep at home. When I got back this past Monday on 4-18 I drove it on several short trips for four days straight and it was perfect, and also the CEL was off the whole time., P0300 - Multiple/Random Cylinder Misfire. For a while, my check engine light would come on, and then go away after a while. My OBDII+Torque read P0300 and P0306. So Random/Multiple Misfires, and Cylinder 6 Misfire. I went ahead and changed out all the plugs and wires, as well as the coil pack. The light went away for a couple of weeks., P0131 is The Powertrain Control Module (PCM) detects that the 1/1 Oxygen Sensor signal voltage is below the minimum acceptable value. The DTC will set as Pending after one trip and Active after two trips. Three good trips to turn off the MIL. You could have a short to ground or bad sensor. P0172 is fuel system rich., No hard starting issues. The CPS is what monitors for misfire. Misfires can happen from plugs, coil, or distributor and fuel related items, but if you know they are working correctly, your CPS may be failing to monitor the RPM’s correctly and throw a code thinking it “sees” a misfire. It’s a tough call for a $100 part., 08 JK P2305 and P0300. Alright, I created a Thread yesterday about my friend's Jeep JK that was throwing code P0688 ASD circuit Low. He finally found the blown fuse and got the jeep back running. Now he is getting code P2305 and P0300 which is ignition coil 2 secondary circuit and multiple cylinder misfire. His coil pack literally …, Jeep Wrangler P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the ..., Their suggestion is to do a 'tune up' with new plugs and wires (yes, I told him it doesn't have plug wires) for about $400. The plugs are only $85 if I buy locally. He said it's about 2.5hrs labor. Even at $100 per hour it doesn't come up to $400 total. I don't know what to do at this point., P0300 before and after an egr plugs and wires. Hey guys, 08 jk 3.8 auto 170k here. A week ago I got the 0300 code and an egr high circuit code along with a few o2 codes. Happened before the jeep was all the way warmed up and as soon as it hit I got a stutter in the motor, loss of accel., P0300 before and after an egr plugs and wires. Hey guys, 08 jk 3.8 auto 170k here. A week ago I got the 0300 code and an egr high circuit code along with a few o2 codes. Happened before the jeep was all the way warmed up and as soon as it hit I got a stutter in the motor, loss of accel., Jul 20, 2019 · P0300 can't be tackled. Hello everyone! 2006 Jeep wrangler 2.4l 4 cylinder 101k miles. Got P0300 code and have replaced wiring harness (dealership), PCM (dealership), MAP (duralast), spark plugs (NGK Plat), going to change ignition coil and coil plugs next. TPS & MAF sensor changed within the last 10 months. , I'm getting P0300, P0303 and P0304. I've tested fuel pressure, it was low so I changed the fuel pump with the recommended factory replacement, replaced spark plugs twice with Autolite APP985. ... Produced from 1997-2006, many consider the Jeep Wrangler TJ to be the last true Wrangler., For decades we've been told having houseplants can improve our indoor air quality. So, do you need to live in a veritable jungle for this to ring true? Advertisement Few things enh..., Left "dealer" and below happened. The below paragraphs are from an old post I left on the intraweb. 4/20/16. New 7 miles and MIL CODE P0300 multiple misfire. What's the deal with this, Just picked up my 2016 auto jku rubi. Driving home from dealer, I noticed the MIL check engine light and I connected my diagnostic tool, and it showed …, Every time I pull the following codes p0300,p0303,p0304, general misfire, and misfire on cylinders 3 and 4. The following items have been confirmed to be properly working: plugs, wires, cap, rotor, o2 sensors, injectors, fuel pressure OK. Here is one more thing, after erasing the codes the jeep runs great for the next drive., It could be a multitude of problems. - cam sensors marked with a "D" were bad from factory. - Oil Galley bolts loose, behind the cam phasers on the front of the valve cover. - will cause worn valve guides on the front, listen for an engine tick at idle. - and even the head warping and causing even more trouble., It read code P0052 - Voltage to high on Bank 2 Sensor 1 - essentially the new sensor I just put in. Other than the new Yellow light the car ran fine. I cleared the code and it IMMEDIATELY came back the next time I started the car. This time also with P1129 - some nonsense about the fuel loop. That one comes and goes., If evens year in the future someone is fighting a P0301 P0302 P0303 P0304 P0305 P0306 or a P0300, feel free to resurrect this thread. Hopefully you won't need a new head, but if you do, its cheaper than buying injectors or throwing parts at it. 2004 TJR (used) Jeep Club Events, off road parks etc ... Jeep Wrangler Forum. 9M posts 469.8K …