Passat (B6) :: New Plugs / Coils - Misfire On Cylinder 2 Or 4
Replaced plugs and coils after I got a misfire on cylinder 2. (cheap made in china coil packs off of autoparts warehouse)
Also, plugs had 30k miles on them with original packs. Got it again.
Replaced coil on cylinder 2. Got it again.
Bought Denso double platinums. Got it again.
Moved coil packs around. Misfire on cylinder 4.
Checked plugs, good dry non corroded. Its always 2 or 4.. not 1 or 3
Slow drive with less than 30% gas pedal action it runs "ok". If I go uphill or need to step on it, not happening. Bucks like a mule.
I dont think its the fuel injector... Ordered the red audi packs off europaparts. Might need to check connections. what do i do?
I've been also reading that it could be the cam follower. I'm willing to check it and then force the dealer to fix it under the extended warranty, but if its broken I cant put it back in. The dealer is 50 miles from me.
It happened a morning I was out of gas and used .... regular! But did put in super right after that. I had spare regular gas in a container (fresh) for the generator.
Then used fuel additives. I have also been using fuel additives every other fill up just to protect injectors. I know it wont do anything other than that because of direct injection.
Ford - Ranger :: Cylinder Misfire - Spark Plugs Keep Going Bad
I purchased a 2000 Ford Ranger last year. Within the first two months of ownership, the vehicle was having a cylinder 4 misfire. To fix it, I replaced the fuel filter, plugs, wires and cap - replacing the wires, plugs and cap fixed the issue. The issue went away for four months when cylinder 4 misfired again. I brought it to a repair shop and they again replaced the wires and plugs. The vehicle now has a cylinder 6 misfire.
There has to be something causing these plugs to continually go bad. Rather than just replacing the plugs again, I'd like to attempt to be proactive and fix the root of the issue. I've googled the issue and some of the forums seem to indicate a bad EGR valve.
Golf IV / Jetta IV :: Misfire Cylinder 1 And 5 On VR6
Getting misfires on cylinder 1 and 5 in my 2001 Jetta GLX. Replaced coil pack. Installed a different/used cam position sensor.
Swapped injector 1 and 5 with 2 and 6. Cleaned MAF and throttle body and did adaptation. Checked resistance of plug wires and swapped plug positions.
Golf IV / Jetta IV :: Cylinder 1 / 3 And 5 Misfire
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View 6 RepliesPontiac - Grandprix :: 2004 - Cylinder 3 Misfire And Gas On Spark Plugs
Ok , i have a 2004 Pontiac Grand Prix GT V6 GM 3.8, my car didnt have any misfires until after i changed my Lower Intake Manifold Gaskets. After changing the gaskets and putting everything back together. The car ran fine. The next day i took it an hour and 30 min away, while driving there it started misfiring and shaking,rough idle at an hour into the trip. The check engine light went to blinking. The Next day i drove it all the way back home in the condition. Put code scanner to it, and received P0303 "Cylinder 3 Misfire":
So i automatically assumed it was the coil pack because i just installed new wires and plugs a week before changing Lower Intake manifold Gasket. Bought new coil pack. Still getting rough idle and P0303 code. So i decided to take a look at Cylinder 3 Spark plug and it was dry black, carbon fouled:
So went and bought new spark plug, installed it, started car and still rough idle and misfiring. Took the new spark plug out and it had been FOULED also ( DRY BLACK AGAIN). So i was told to switch a coil pack around. I did it and the started car, took away some of the rough idle, car actually wasn't misfring or shaking, would run smooth for about 5-8 seconds then start misfiring (Didn't that until i switch coil packs around).
Next Decided to pull out the rest of the plugs from the back and all of them were WET with GAS!! and 2 Spark plugs are just dry fouled!! (Cylinder 3, Cylinder 1). If I can figure this out i will fully have my car back to running correctly.
Golf IV / Jetta IV :: Misfire On Cylinder 1 At Idle
Alright Ive had a misfire on cylinder 1 for far too long. I've replaced all ignition coils and plugs with oem parts. Also replaced fuel pump and filter with oem. As well as 2 injectors. Before I would misfire under load, now I misfire at idle..wiring looks good and not cracked from what I can see. Only codes I reciece are random multiple misfire, misfire cylinder 1. And diverter valve mis function because of my BOV. So what do I do now vortex?
View 1 RepliesGolf IV / Jetta IV :: 2001 - Misfire On Cylinder 4
New to the VW world but I am not out of my element for I am a Porsche guy. So I feel right at home. Last night I picked up a 2001 wolfy Jetta with a 1.8t on the cheap with a misfire on cylinder 4.
I have verified I have no spark on 4. I have confirmed the issue is not the spark plug, coil pack by swap and see method. My coil pack and plug work fine on another cylinder. I reset my cels and here are the new ones that pop up:
a 121 - gas pedal position sensor- doubt this would give me a no spark
a 304- Misfire on 4, (duh, like I needed to hear that)
a 030- bank one 02 -Doubt this would also give me a no spark condition)
In my testing:
I have good system voltage on the coil pack
I have good ground ohms
My signal wire is not shorted high or low
When I take V and ohm readings on the coil pack connection, either with the ign on or off they are all in line with the other sensors. So I don't think I have a wire issue.
The PO had the ECU replaced at a local dealer. I looked at the old ECU and it appears it had got wet at one point.
Im wondering if the same thing hasn't happened to the new one. however after they replaced the ECU they gave him the car back still broken. So it never ran even with the new ECU.
1 Where is the ECU?
2 What tells the ECU to fire the coil packs at the right time?
Golf IV / Jetta IV :: 2003 VW - Misfire On Cylinder 2
So I've been having some problems with my 2003 Volkswagen Golf lately (2.0 L gasoline engine, 98k miles). It started with an engine coolant thermostat code. This was repaired by replacing the thermostat and housing. Shortly after this fix I began to get a misfire, especially on rainy and humid days. Checking other forums I discovered that this was probably the result of a bad ignition coil.
The coil, spark plug wires and plugs were all replaced, but I am still getting a misfire. The idle is very rough so I've heard that it could be a bad fuel injector or faulty ground (though with the new components the other three cylinders sound cherry). The next step would be to purchase a "noid" test light and determine if the electronics to the injector are bad. I've also read that it could be a vacuum problem. There is a smell of unburned fuel when the engine is running.
How was it repaired? I'm quite good with the mechanical parts but lack the diagnostic tools, vacuum testers, multimeter and other such devices for performing complete screenings of the vehicle. Also, I can't drive it out to the local auto parts store to read the new error codes anymore. Finally I've got a "Chilton's" for the car but if there is a better manual available (better pictures, more descriptive instructions).
Golf IV / Jetta IV :: 2002 - Replace Throttle Body And Coil In Cylinder 2 But Again Error Message P0638?
I have got a 5 door 2002 Golf 1.6l petrol, manual transmission with 190k kilometers on the clock. It has been playing up recently and the authorized VW garage is clueless, but still happy to charge for a miserable job...
The "symptoms" are always the same: I can start the car no problem. Plenty of water coming out of the exhaust and EPC light comes on, no power transmission (or very little). In this state, the engine runs irregular. Before all this happens, you can tell there will be a problem (this is not super obvious), as the car does not run smoothly in neutral, especially when it is at a a hill You might get away with another 50k but that's it.
Breakdown 1: Called out road side assistance and got it towed. Volkswagen dealer retrieved the error code P1564 and they replaced the throttle and some of the contacts of the throttle. (Costs 800 GBP)
Breakdown 2: However, 300 km later, same problem as before road side assistance retrieved error code P0638. The memory was reset and it did run perfectly fine for a short while (2000 km).
Breakdown 3: As before, error message P1564 was read. This time they thought there was a problem with the coil in cylinder 2 and replaced it (250 GBP) - also the one in cylinder 1 as "old". Picked up the car and it was not running smoothly in neutral and it eventually broke down after only 90 km.
What to get changed next? What is the real root of the problem here?
Golf IV / Jetta IV :: Code P0304 On Mk4 2.0 AEG - Misfire On Cylinder 4
2000 Jetta GL 2.0 AEG. I am receiving the P0304 which I have identified as Cylinder misfire #4. I read on some previous posts that I cannot be the distributor because if it was I would be receiving misfires on two cylinders. The spark plugs are OEM NGK and have been replaced recently.
View 2 RepliesGolf IV / Jetta IV :: VR6 Misfire On Cylinder 4 - Low Compression Level Of 90
I am a new vr6 owner. I just purchased mine not to long ago. It seems to have developed a pretty mean misfire on Cylinder #4. It is also showing a low compression level of 90 on cylinder #4. all my other cylinders show somewhere between 105-110. I replaced my wires and my coilpack. It did not improve anything, infact, my car seems to run worse now. I am baffled as to what can be causing my misfire.
View 7 RepliesGolf IV / Jetta IV :: Cylinder 2 And 3 Misfire - Code P0411
Alright so my car is popping up 4 codes.
P0411 - Secondary Air Injection System Incorrect Flow Detected
P0300 - Random/Multiple Cylinder Misfire Detected
P0302 - Cylinder 2 Misfire Detected
P0303 - Cylinder 3 Misfire Detected
Vehicle: 1999.5 VW Jetta MK4 2.0L GLS (AEG)
The P0411 code I have had for a while now and I been lacking to fix it. I pretty sure I can get this fixed but it doesn't cause problems so I haven't paid to much attention to it. Anyways, the other day I noticed a puddle of coolant under my car so after checking it out, the water pump was leaking so I bought a new one and replaced the old one. However, during the replacement process I had to remove the timing belt and I accidentally turned the top pulley about 1 notch and didn't notice at the time. After putting everything back on, I turned my car on and the engine sound a bit weak so I ran for about 10 minutes around a couple blocks.
I instantly noticed that the car had no power and it took me a long time to speed up. When I got back, I plugged in my scanner and I only had the same P0411 code and nothing else. After carefully reviewing the camera I had recording during the water pump replacement, I notice I had turned the top pulley a bit so I went ahead and removed the timing belt, readjusted it, and it worked! I was excited that the car was working fine again. Soon after, I headed out to take a drive and noticed after 60MPH the car didn't have much power. The car still accelerates after 60MPH, but extremely slow. As soon as I arrived back home, I plugged in my scanner and that is where I seen the 4 codes. Now my question is what could have caused this? Could I have damaged something when I ran my car with the incorrect timing?
Things I have done so far:
-I checked to see if I left anything unplugged.
-I checked for any vacuum leaks
-I checked my oxygen sensors so see if I was running rich/lean
Things I will do after work today:
-Check the spark plugs
-Check spark plug cable for damage
Golf IV / Jetta IV :: 2001 1.8T - Cylinder Misfire Code
I recently changed my spark plugs + coil packs in my 01 1.8T because it read a couple cylinder misfire codes. Drove it for a few days out of curiosity plugged the code reader in again and it's still reading misfire codes. What could the issue be still?
View 6 RepliesGolf IV / Jetta IV :: VR6 - Random Multiple / Cylinder Misfire
Replaced my water pump March 2nd using the "From Below" method. Started the car after and the check engine light was on and water pump was no longer leaking. I drove the GTI to Advance (15 Mins away) it drove fine and I pulled two codes.
P0300 - Random Multiple/Cylinder Misfire
P0301 - Cylinder 1 Misfire
The car pulled and drove normally. The next day the car is misfiring badly. Hesitation and bucks when accelerating until roughly 3k then smooths out.
I will swap my coilpacks and check if the misfire moves as soon as I can get my hands on an OBD2 Scan Tool.
From what I understand about the VR6 :
-The water pump runs off the serpentine belt
-Camshaft timing is controlled by the timing chain.
-Timing chain is not affected by the serpentine belt/pulleys.
Questions :
-Can turning the Crankshaft Pulley affect timing?
-Can that be the cause of the misfire?
24V VR6
Golf IV / Jetta IV :: 2004 - MIL Flashing - Misfire On Cylinder 4
Just dug out my 2004 2.0 Jetta after sitting buried for 4 months. You can see a corner of the wheel there lol, its been a LONG winter. It is my car but my brother normally drives it, and while he is away at uni it just sits.
Anyways, dug it out to start it. Started right up, however after a bit the MIL began flashing. It was running a little rough. Took out my code reader and engine misfire cylinder 4 came up. The rpms are varying by 75~100 every few seconds, however nothing rough. It seemed to rev fine.
Before I put it away I got my brother to put some fuel stabilizer in the fuel. He now tells me that he put some in the oil too since it said "oil stabilizer" as well. It was a seafoam type brand... Not impressed with him there.
My question is could this just be the car waking up? Should I let it run for an hour or two to see if things work out?
Golf IV / Jetta IV :: 2000 VR6 Random Misfire In Cylinder 2 And 5
About a month ago my wife's 2000 Jetta with the VR6 engine in it started acting up and throwing codes. The codes it threw were for random misfire, misfire in cylinder 2, and misfire in cylinder 5. Starting out, we changed spark plugs, fuel filter, and made sure the injectors were clean.
The problem didn't go away so we water tested the coil and wires, but they passed that test. The wires were quite old and out of spec, while the coil was in-spec across all terminals, according to the vehicle service manual, so we installed some new OEM leads this weekend. While installing the leads we noticed a disconnected vacuum line and reconnected that as well.
The vehicle was driving great for two and a half days, then today while I was sitting at a stop light, it started missing really badly and felt like it was going to kill. It did this for about 5 seconds, then recovered and ran smooth for about 5 seconds, before getting really rough until I started driving when the light changed. It didn't do it when I drove it a few hours later at all. This episode didn't throw any codes either.
What could be causing this issue? Would the MAF cause the intermittent missing, or is it possible that the computer is going bad?
Golf IV / Jetta IV :: 2001 GLS 1.8T - Cylinder 1 Misfire / O2 Sensor Codes
I bought a 2001 golf gls 1.8T (AWW) about a month ago and it was running pretty bad, was throwing some codes, cylinder 1 misfire and some o2 sensor codes, I replaced the coil packs and spark plugs and then cleaned the MAF. It was still running bad ,rough idle and power loss. I figured it had to be some kind of vacuum leak, I replaced the PCV valve, cleaned the intercooler and put on a silicon TIP. Still had some rough idle and power loss, checked for vacuum leaks, using the good ole starter fluid method and found my intake manifold was leaking so I replaced that gasket. STILL rough idle and power loss, now I'm pulling codes for o2 sensor and a misfire in cylinder 3. My question is, should I replace my pre-cat o2 sensor or replace my MAF sensor? Or are there other things that should also be checked/replace.
View 5 RepliesGolf IV / Jetta IV :: Catalytic Code / Cylinder 3 Misfire P0303
I own a BMW not a VW! My 19yr old daughter purchased her first car a few months ago, an '03 Jetta 2.0L with approx. 170,xxx miles. Just after she got it we pulled a P0420 code, but it ran fine so we haven't worried too much about it. I've cleared that code and after about 2 weeks it will come back. Last week it started to have some issues with rough idle, stumbling/hesitation. I pulled the codes yesterday an in addition to the catalytic code is a cylinder #3 misfire P0303. I thinking the 2 codes are not related. I'm assuming the typical things to look for on the misfire are coil, wire, plug? Looks like the coil on this engine is a combined unit so no switching coil packs to see if the miss follows a bad coil pack.
View 4 RepliesGolf IV / Jetta IV :: 1995 - Random Multiple Cylinder Misfire?
I have a 1999.5 Jetta VR6 12v, last week the car would not start. After some tests I determined the coil pack had gone bad. Replaced the Coil with a brand New aftermarket German made coil. Now 1 week later, driving at highway speed CEL came on, started to flash and obviously misfiring again. Ran Codes and now im getting these DTC's:
1)random multiple cylinder misfire detected p0300
2) cylinder 4 misfire detected p0304
3) ignition coil output 3 electric malfunction p1395
4) cylinder 3 misfire detected p0303
has this new coil gone bad already after a week?
New issue?
Plugs were replaced less than a year ago, wires were apparently replaced by previous owner about 2 years ago now. Crank sensor replaced less than a week ago...