So, unfortunately, when I go to start it, it dies shortly after. So I scanned it and I'm pulling up a couple codes, actually quite a few. I'm currently at work and can't look them all up.
U102f
p0011
p052a
p0300
p0303
p0506
p0011
Most of them are misfires, but what are the chances that I've got a misfire in all four of my cylinders? Bad coil packs all go at once? I was told it could potentially be a boost leak?
I just bought a 05 1.8T Jetta 116,000miles. and need diagnosing it. It misses all the time. Has new plugs I tried two other sets of coils (from my 2.0 a4 and my dads passat) and it made no difference. The SAI was taken out but nothing is blocked off. Also the coil pack wiring harness has cracks on the big brown wire where it goes down along the block. I'm getting these codes on my vag-com.
16687 cylinder 3 misfire
16686 cylinder 2 misfire
16688 cylinder 4 misfire
17766 cylinder 2 open ignition circuit
17763 cylinder 1 open ignition circuit
17769 cylinder 3 open ignition circuit
17772 cylinder 4 open ignition circuit
So am I correct in thinking that it's from the cracked harness? An not a vac leak?
So my daughter's 2000 Golf Mk4 with 160,000 miles on it was running rough and had 3 codes stored - cylinders 2 & 3 misfire and a 411 secondary air injection problem.
Having had the misfire code before I swapped injectors around and the error code moved cylinders with the injectors so I attempted cleaning them and also cleaned the throttle body and intake manifold. At this point car still running rough but also started smoking badly.
Replaced the following items:
- Spark plugs
- Spark plug wires
- PCV valve
- PCV hose
- Fuel injectors w/ remanufactured
Hose reconnected between secondary air injection pump and air intake - previous owner had duct-taped it in when he couldn't get it to seal I guess. I've never heard it run.
Car running better, idles more smoothly, doesn't stumble or stall like it did before, no error codes coming up BUT car smokes a lot and the fumes make me feel sick just driving it a mile.
The car had never smoked like this before, hasn't had a whole lot of love the last year or two but no real problems either so why the sudden smoke?
At first I assumed it was cleaner being burned off but that should have been gone in under a minute and this is on-going. It's bad enough to not only be embarrassing but apparently dangerous as the fumes are bad.
I have a 2004 Jetta 1.8t 6speed, I recently bought it from a person(my first VW ever) so just trying to fix some things on it, One thing that I'm stuck at is My CEL, it keeps flashing the code P0501 and some random misfire on my cylinders, I have reset it and they keep coming back.
when I put about 10-15% throttle it revs up fine, no misfire or hesitation until the fuel gets cut off around 5500, which is 1k below factory red line, does not hit a thing like the rev limiter where it pegs off the top multiple times just fuel cuts off.
If i put anything above the said pressure the car then begins to misfire and lots of hesitation and that's what causes those codes to go off.
I've been reading many things pointing towards the engine speed sensor or the wiring. Occasionally my fuel/temp gauge quit working but I believe that is a separate issue all together.
So really trying to narrow down what is actually causing my engine to hesitate at low rpm.
Also i might note when I'm in neutral I can go wide open throttle and the car revs fine until the cutoff and only does the bog down when it's under full load. It sorta feels like the possible misfire is due to bad air/fuel but really do not know.
Random multiple cylinder misfire according to auto scanner report on a 2002 Passat 1.8L? I have recently changed all belts including the timing toothed belt. I have had this very same problem prior to changing all belts on this car. Mileage is 111,000 ....
View 2 RepliesHow it all got started: [URL] .... Replaced Check Valve (06A 133 528 D/A) today, car is still idling rough, flashing CEL but it's solid/no CEL when the car is moving.
What I have done so far:
1. Replaced Turbo Inlet Pipe (Cracked at one corner)
2. Replaced D.V. (Original was fine)
4. Did Smoke Test, No Vacuum Leak
3. Replace Check Valve (06A 133 528 D/A) Above The Intake Manifold
4. Cleaned Throttle Body and All Pipes under Intake Manifold
Codes keep reappearing:
17705 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)
P1297 - 001 - Upper Limit Exceeded
And All Cylinders Misfire
Car idles fine when I squeeze this hose marked in green : [URL] ....
Something I noticed before and I think it's still doing it, there is weird noise every time I shift to reverse or drive, It sounds like when you just open drivers door.
Here's the link to the sound clip [URL] .....
I have 2000 b5 passat with 150k on it. I've had the problem of a multiple misfire on cylinders 2 and 4. The last time it happened was about a month ago do I brought it to a vw dealership and had one of their mechanics and they told me I had a valve cover gasket leak and it was causing my coil pack to short out so they replaced my coil pack, plugs, and wires. They wanted way too much for the valve cover gasket leak so I decided to wait till I more money. The car ran great for a month or so then the misfires started happening again.
I made an appointment to get my valve covers replaced a they're getting replaced right this minute but the misfires are coming and going. One day the car runs great and the next day it's misfiring like crazy an shuddering bad. It only seems to happen when it rains or is wet outside.
I went and looked at an 03 Passat 1.8T with 114k miles. I like the car and the price but the CEL is on, returning random misfire on each cylinder with a standard (non VW) scanner. There are no other codes. The car runs beautifully until it idles low with the car stopped or stopping; then you can feel it missing.
The coil packs and controller arms were recently replaced. The timing belt was replaced at 100k. The spark plugs and wires have not been replaced. I don't know whether the coil packs are stock or not, should I ask? The code can be cleared but then it comes back (I'm not sure how long it takes; I could ask).
I've collected this list of possible things to check, based on this useful previous post:
1. Oil overfill.
2. Downstream O2 sensor.
3. Spark plugs and cables.
4. Cam Shaft Adjuster? (maybe? there is no cam shaft code?)
5. Plugged fuel injectors?
6. Plugged catalytic converter.
7. Cam timing?
8. Induction cleaning?
Is this a good list? Are there possible troubleshooting steps not included here? Are some of these superfluous in my situation?
This is for a 2002 Honda Accord, SE 4 Cyl.
For over a year I have been getting a CEL for a misfire of Cylinders 1 and 2. I did a standard tune up, Changing the spark plugs, wires and distributor cap, but to no avail. Having reached the end of my knowledge, I took it to the Honda dealership to see if they could fix it. They told me it was the ignition coil, so I replaced the coil. That didn't solve the problem so I brought it back to the dealership, which proceeded to tell me that I needed to use Honda spark plug wires and distributor cap. They replaced the wires and cap with Honda parts and told me it was fixed. On the drive home, I noticed the misfire again. Back to the dealership. 2 weeks later I finally get sick of waiting and go pick up my car. Here's the list of things they claim they tried:
Compression Check
Sea Foam
Swapping fuel injectors
Changing the distributor
After none of these things worked, I decided to take the car to another mechanic, who told me that the distrubutor and EGR valve needed replacing. They assured me that that was the problem, but after that didn't work, they still charged me to adjust the valves.
Later I tried changing the PCV valve, now losing hope that anything would work....and no, that didn't work.
Strangely enough, as winter rolled around the CEL went off, and the car misfired much less. Now summer is back, and so is the CEL...
My 97 F-150 has 208,000 miles on the original engine. It started misfiring originally on just 2 cylinders, 1 and 8, after pulling the codes. I also get a P0420, catalyst system below threshhold bank code being thrown, but I think it is because of the misfires.
To remedy this I've done the following:
1. Spark plugs are relatively new and were changed completely a few months prior to issues.
2. Coil Packs were changed on both sides. Additionally, Cylinders 1 and 8 are on separate coil packs.
3. Spark Plug wires were changed
4. Did a resistance test on each fuel injector and they all passed.
None of this has worked. Am I missing something obvious? From my friends I've heard everything from my exhaust is plugged to I need to change all my injectors. Injectors are costly and I'm not even sure how to check if my exhaust is partially plugged, but it seemed to be flowing fine. Also, I pulled plug one since it was simple to get to and noticed it was slightly brown, like it had oil on it.
I got frustrated and continued driving my truck until the problem degenerated into severe misfiring and now I cannot get it started at all (Wrong move). I bought a car and haven't drove it since, and have it sitting behind my house. Now the cops want to tow it because the registration is has expired so I've decided to move it into my garage so I can work on it. Part of me wants to junk it, but I've put a lot of time, money, blood, sweat, tears, and curse words into this truck and am motivated to get it back up and running since the transmission and front suspension had been replaced recently.
What to do!?!?
1. Go to the Ford dealership and have them diagnose the issue and then try to fix it? (I have little confidence in them from the stories I've heard)
2. Pull the engine, tear it apart, and rebuild it?
3. Drop a used/rebuilt engine in?
4. Call me crazy and say junk the truck and buy a different one?
Currently leaning towards option 3...
I have a 2009 Hyundai accent. 2 cylinders misfire. I changed out the spark plugs after the misfiring began and the 2 cylinders that misfire don't follow any specific ignition coil, it's just 2 random ones.
Looking at the data with a reader points to fuel injector number 1 not working properly. The first few seconds the car is on the check engine light blinks and fuel injector 1 spray duration (fluctuates based on gas applied) changes just like all the others. However, when the check engine light goes solid (then the misfire code is thrown) fuel injector 1's spray duration is stuck (usually around 3.5 ms)
The cable going into the fuel injector powers those little troubleshooting lights like it should until you plug the cable into the fuel injector OR remove and replace the light a few times.
I don't know much about cars but someone told me to try cleaning out the Mass AirFlow sensor as they had the problem above and the MAF sensor was the cause. I can't find anything on where the MAF sensor is located though.
I started out with misfires in cylinders 1 and 7. Replaced all spark plugs (used autolites, i know i know). While replacing them I found that the boot on coil 8 was beat up with a chunk missing. It was working before I replaced plugs. After I changed everything out the 8th quit working completely and I still had a miss in cylinder 1.
Replaced coils on both of those and put a new wire connector on for 8th cylinder because it no longer clicked in correctly anymore. Truck runs infinitely better than it did prior to this, but according to OBD2 I still have misfires in 1 and 8.
Mostly in the 50-60mph range. What else could be causing this??? Injector maybe or is there some other sensor or timing problem? My dad has a compression test kit, but he lives several hours away so I can't just get to that right away.
Toyota read the codes wrong and told me that I need a new hybrid battery. That is incorrect info. Codes P0300 P0301 P0302P0303. The codes mean misfire in cylinders 1 , 2 and 3. I have had injector cleaned in the past new spark plugs. If I drive it it gets warmed up and shuts down. It will restart and run maybe 7 more miles the same. The brake light comes on and I have to restart it.
View 9 RepliesSo i got a 98 passat sedan used and was told it read a p0411 code. The person at autozone told him it was a cam sensor. The sensor was replaced. I know now from the manual that codes reads for sec. Air injection system , incorrect flow. It could be the vacuum lines. Now lets say it is the vacuum lines. Their is a misfire on cylinders 1-3.
View 4 RepliesI have a 2001 Audi A4 1.8t (AWM engine, B5 platform). When I start the car, I get misfires on all cylinders (very rough idle, sometimes it stalls when the engine is cold) and the car appears to be running lean. Once the CEL comes on, it runs fine (albeit the slight loss of power do the ECU going into limp mode to correct the problem).
So far, I've done the following myself: new O2 sensors, new SAI pump, new EGR valve, new diverter valve, new N75 valve, new vacuum hoses, cleaned the throttle body, new MAF sensor, cleaned the air filter, new plugs, and new coils. When the problem persisted, I had my mechanic change the timing belt, check for vacuum leaks, change the valve cover gasket, replace the fuel pump and filter. None of this has solved the problem! This is driving me nuts.
At this point, there are only two possibilities that I can think of:
1) Catalytic converter is clogged? I pulled out the pre-cat O2 sensor, started the car, but it still misfired. This seems to mean that there's another problem (i.e., if the cat is clogged, it's in addition to something else).
2) Dirty fuel injectors? I've put two bottles of Techron through the car to no avail. From the outside, they look pretty dirty, so I'll definitely try removing them, cleaning them, and replacing the gaskets. Hopefully this solves it.
Is there something I'm missing?
Started up my car the other night and my engine light came on, trac light came on... VSC msg came on the dash, engine was rough idling. I drove it home after checking my fluids... i took the OBD scanner to see whats going on, hoping i just need a battery change. Codes popped up P0354, P0300-0306. basically ignition coil malfunction, and my cylinders were misfiring.
I am at 62k miles and warranty crapped out at 50k. the problem was obviously electric, since all 6 were misfiring, otherwise it would only be a few. I haven't had any engine work, I just recently did a proper oil change at home(royal purple 5W30), which I've done since I've had the car in 07.. I took the car to the dealership for the CPU reprogramming for the recall in April.
About to take the car back to get it checked up on and fixed.. I am lowered on coilovers and 20" rims, which gives it a rough ride, but i dont think it would cause this problem. i dont track/race the car and i drive it relatively civilized. Lowered since 30k miles and 20"rims since 50k miles.
What could've gone wrong? timing off etc... i pulled my engine cover to check the connection points for the coils, all seems fine, no corrosion on the grounding points. i was only able to check the front 3 coils, the other 3 were hidden in the back and i wasnt able to look at them. i assume they should be fine as well..
I recently had detected always misfire on those cylinders. Any relation between them?
View 1 RepliesWhat to do Misfire Error all cylinders also coil code P0356 . It is 2006 Avalon Ltd with 37,000 miles always maintained and all recalls completed. Is there something I missed or is this for real or could there be a common problem that is causing all the errors. Car idles ok and no problem driving below 60 mph anything over and you can fell a shutter like it will lose power.
View 14 Replies2007 Passat 2.0T ... I just purchased this vehicle and after about two weeks of driving it has gone bananas. I found a ton of oil in the spark plug holes, and installed a new valve cover gasket...It no longer leaks. I am getting P0171, P0507 codes and multiple misfire codes from all cylinders...
View 6 RepliesI have an old 2000 Ford Taurus that has been having some misfire issues. I replaced the wires and plugs about a year ago and hooray! it worked... until about a month ago when the check engine light came one. Misfire in cylinders 1 and 3... again. I ran some SeaFoam through and it did okay until this week, when the warning/flashing check engine light came back.
It is idling very hard (expected) and feels like it is trying to stall, even before the misfire came back (also to be expected??). So here is the question: is this a coil pack issue, or something more sinister (and expensive)?
I have an '04 Subaru Forester which sputters and stalls after fill up. It sends error codes for cylinders 1, 3, & 4 misfiring...I only have a 4 cylinder car - This only started Friday - a few days later and I'm really getting desperate. I screw my gas cap on, we check the connections...and we've read all kinds of random solutions that spread across the board.
View 18 Replies