Golf VI R :: Random / Intermittent Misfire On Cylinder 4 After 5000 RPMs
Nov 1, 2014
I was running in a track day at Sebring today and missed a shift. Rookie move...the car eventually went into limp mode. I took the car back to the pits and scanned the codes. Limp mode was confirmed in addition to a cylinder 4 misfire and a random/intermittent misfire. Cleared the codes and went back out; couldn't even finish the lap before the car was thrown back into limp mode.
I was able to hobble home by keeping the car out of boost and started trouble shooting. So far I have ruled out spark plugs and coils. Should I be looking at the injector next? Any chance I bent a valve? The misfire can be triggered by putting the car under a load and bringing it up to 5,000 RPMs or higher.
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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
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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?
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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...
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I recently found these codes. My car is APR 1+. The car seems to run fine so I'm not sure what is going on. I changed the plugs at ~60K miles and now have 72K miles.
Address 01: Engine (CRZ) Labels: 06F-907-115-CDL.clb
Part No SW: 5K0 907 115 M HW: 8P0 907 115 B
Component: 2.0l R4/4V TFSI 0020
Revision: 5BH20--- Serial number:
Coding: 0403010A180F0160
[Code] ....
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I was driving the car normal with no problem. Got to a red light stop an as I was coming out of the red light the car started to hesitate a bit. So I start to drive home as I was driving home my check engine start to blink and then it stay on. When I got home and park the car I shut off ,then start it up again then the check engine light was off but the hesitation was still there. Then I got my computer and got the vagcom and got this code :
16684-random/multiple cylinder misfire detected
P0300-008- implausible signal
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When I purchased my 2010 mk6 about 3 weeks ago there was a noise in the dash board when ever the RPM's pasted 5,000 It sounds like a rattling noise from the intake or something. So i put a stage 2 APR intake, Magnaflow cat back exhaust and a AWE tune. After all that work the rattling noise is still there and is driving me crazy. I love the car but there's gotta be a way to get rid off the noise ...
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1999 Passat 2.8L. New coil pack assembly, wires, plugs, valve cover gasket(oil in plug holes). Misfire at idle and low rpm. Driving at higher rpm's misfire seems to go away. Codes are random misfire and cyl 1 misfire. Need to know if I would get an injector code if a fault or If that motor has problem with faulty cams or springs or any other common problems. I am going to do a compression check this weekend I'll update that info.....
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My CW R has 12k of combined mileage primarily in D/S with some aggressive Topanga Canyon driving in M. While sprinting onto the 405 the other night a resonant metallic buzz/vibration was audible between 4800-5000rpms in 3rd & 4th gear! The sound is coming from below the shifter console area. I can't reproduce it in any other gears or rpm range.
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What is going on with my sisters passat 2002 V6 GLX Auto 4Motion. Here is the codes:
16730-Camshaft Position Sensor (G163) Implausible Signal
P0346-35-00
16684-Random/Multiple Cylinder Misfire Detected
P0300-35-00
16688-Cylinder 4: Misfire Detected
P0304-35-00
16690- Cylinder 6: Misfire Detected
P0306-35-00
16689-Cylinder 5: Misfire Detected
P0305-35-00
I changed Both sensors and it still same problem. Car only has 40,000 miles didnt change timing belt.
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my car was running fine yesterday. Today the check engine light came on and it started to run funny.. I checked the diagnostic code and it says the the cylinder is misfiring and that oxsygun sensor is malfunctioning. (Random/Multiple Cylinder Misfire Detected)
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Trying to troubleshoot my 2001 Elantra (173k). I'm having intermittent trouble codes being set and I'm wondering if they may be related:
P0302
P0303
P0446
The cylinder 2 and 3 misfires are relatively recent. Plugs and wires are visually ok (and not that old). I swapped plugs 1 and 4 with 2 and 3 to see if the plugs are bad. It took 3-4 days, but the P0303 set again (and it's very intermittent - car will noticeably lose power for a few seconds, code set, then run fine for several days). I also sprayed carb cleaner on the intake manifold gasket with no change in engine idle, so the gasket appears to be intact.
I had read in a forum somewhere that the misfires could be related to a vacuum leak, which could also be setting the P0446 code. I removed the charcoal canister and inspected the lines - visually ok.
I bench-tested the canister control valve and it did operate, though I noticed some charcoal blocking the valve so it would not close all the way when energized. I used compressed air to blow the debris out of the valve and it appears to close properly now.
I went to hmaservice.com and noticed there are no instructions for the P0446 DTC. I've been using a Haynes manual instead. For quite some time now when refueling, the fuel nozzle shuts off every few seconds (I have to slowly put the fuel in to avoid).
Some questions:
- Can these codes be related?
- Based on my symptoms, should I replace the canister control valve? What about the charcoal canister and the charcoal air filter - should those be replaced as well?
- What else should I check?
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I guess misfires are a rite of passage for these vehicles. I purchased it only a week ago. Welcome to Hyundai...
The car has 53k kms. It's throwing P0300 and P030X on all cylinders. There was one instance of P0128. The engine runs smoothly and doesn't seem to down on power, although I have nothing to compare it to. The only performance issue is that it acts as if there is a rev limiter at 6k rpm. It sputters and stops pulling above 6k. Strangely, it doesn't throw the codes under load. The light flashes while it's running steady-state.
I pulled the plugs and they appeared to be in excellent condition with no erosion of the electrodes. The ash is slightly more white than I would expect, making me wonder about it being excessively lean. I called the dealer. They told me that coils are problematic. Replacing the coils made no difference.
That lead me here. I found the thread "Check engine light flashes then stays solid," which referenced the ECM update.
Interestingly, of the codes mentioned on the TSB, the car is having all but the last two.
- P0300: Random/Multiple Cylinder Misfire Detected.
- P0301: Cylinder 1 - Misfire Detected.
- P0302: Cylinder 2 - Misfire Detected.
- P0303: Cylinder 3 - Misfire Detected.
- P0304: Cylinder 4 - Misfire Detected.
- P0128: Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature).
- P0328: Knock Sensor 1 Circuit High Input.
- P0461: Fuel Level Sensor A Circuit Range/Performance.
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I have a '06 Passat 3.6. I had the intake and valve cover off the other day and when I put it back together it started missing bad. The code it is throwing is a P0300/ random/multiple engine cylinder misfire. What is wrong?
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My buddy has a 2010 tiguan and hes having a misfire issue. It has a hesitation and the interior lights seem to dim with the hesitation. Heres the codes that pulled up with vagcom.
4 Faults Found:
000768 - Random/Multiple Cylinder Misfire Detected
P0300 - 000 - - MIL ON
Freeze Frame:
Fault Status: 11100000
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 148426 km
[Code] ....
What it might be?
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I have recently had some problems with my 2001 Yukon, it a 5.3L and has 4x4. when I accelerate I get about 2000 RPMs maybe and can barely get above 35mph. I brought it to a local dealer for a diagnosis and was told I had a bad catalytic converter, four bad O2 sensors and bad injector connectors. I've replaced the injector connectors but its still acting up. I don't want to spend the 700-1000 on a new catalytic converter when I can just replace the sensors.
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Last week, my van started chugging and the keydance code indicated random misfire. I changed the front spark plugs and wires and it ran a little better but still showed the error. Took it to my trusted mechanic and he changed the back 3 wires and plugs and the coil pack. Code now showed misfire on one of the back cylinders(I forgot which one). 2 Mechanics both confirmed good spark and gas at the cylinder. He is saying that there is a mechanical problem in the cylinder and the fix would be over $1k.
The van has over 250k on it so it's not worth the engine work. I asked about a compression test and was told that it's almost impossible to test the rear cylinders without doing a ton of work, and that they are 95% sure that it is a mechanical problem with the cylinder. I've known the mechanic for over 20 years and he is an honest guy, and knows that I won't do the expensive repair, so he's not trying to rip me off.
I don't have the facilities or knowledge to do the work, so it looks like I'm screwed. Is there anything else that I should be doing before I write the van off? It does run, but very rough at low speed, and no power at high speed, and mech says that the unburned gas will eventually screw things up.
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I had plugs and wires changed to try clear code. Car seemed to do some better but while trying to go up a steep hill car started stuttering and jerking. Power went out of car and check engine light started blinking fast. After let the car sit for bout 45mins car started running fine again and light stopped flashing but remained on. Code read cylinder2 misfire again.
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I had plugs and wires changed to try clear code. Car seemed to do some better but while trying to go up a steep hill car started stuttering and jerking. Power went out of car and check engine light started blinking fast.after let the car sit for bout 45mins car started running fine again and light stopped flashing but remained on. Code read cylinder2 misfire again.
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I was driving along and the engine started missing really bad. The whole car was bouncing around. At first I thought I had a flat, but when I stopped I noticed it was the engine. I checked the error codes and got 16684 and 16686 --- Random/Multiple Cylinder Misfire.
I had a problem recently with the vacuum hose broken and was causing an error code. Replace the hoses and it has been fine. Checked to make sure that the hoses were secure and they are fine. Doesn't seem to me to be related. So many problems for a car with 57,500 miles
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2008 Buick Lacrosse CXL .. My son said the Oil pressure low light came on when he tried to start the car. It didn't want to start.
When I got there two hours later, it started but had a check engine light. But no low oil pressure light. Sounded like it was missing.
Code from computer came back P0300 "Random/Multiple Cylinder Misfire Detected". I cleared the code. Revved the engine to about 2000 RPM's and the CEL came back on.
Same code. When idling it feels like it's missing. The plugs look good, I am going to replace the ICM.
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