Passat (B5) :: VR6 Started To Miss And Run Erratically
Feb 20, 2007
My brother in law drives a 97 Vr6 Passat (150K miles) that has started acting up. I'm a mechanic by trade, but he lives 800 miles away. The car started to miss and run erratically, and finally died. He took it to his regular mechanic and they installed a cam sensor. This worked, but it still ran poorly. They ran a compression check and say it has 180 psi in all holes on one bank, and 100 in all holes in the other. They are ready to condemn the engine.
View 2 Replies
Advertisement
1993 f-150 with 1988 5.0 with no pollution stuff fuel injected. here's the problem. Starts fine and idles great for about 5 minutes , check engine light comes on and it very nearly stalls at which point it begins to miss and surge and basically tries to die.
If I feather the Throttle i can keep it running but not smooth!! Can't find and vacuum leaks and the egr seems to be working (push plunger up - trk). dies. Ran fine when I bought it this way about 1 year ago and all of a sudden this. note.... It started doing this after it ran low on coolant but did not over-heat.
View 1 Replies
I have a really nice 1986 Ranger XLT with a 2.9 V6 (injected) and OD Automatic with about 135k miles. I've had the truck for over ten years and have been pretty happy with it. I'm still trying to correct a couple of nuisance items:
1. Sometimes it runs smoothly, and at others it has a rough idle, and once in a while it will even stall. Before it stalls, it idles or runs roughly, and will miss erratically. When it quits, it does not fade out like it is running low on gas; it quits suddenly, like the ignition is turned off. If I am driving at highway speeds, sometimes it will buck as it misses, and sometimes stalls out. But it always starts up right away afterwards. This does not happen often, but when it does, it happens several times over hours or days, and then goes away by itself for months, even years, and then comes back for another round.
I was hoping whatever was wrong would totally fail, but it has been several years and is not getting better, nor worse. Fuel mileage varies, too, from 16 to high 20's MPG. I have new low- and high-pressure fuel pumps (dual tanks), new gas and air filters, checked all the electrical connections, put in a new ignition switch, new O2 sensor, Air Flow sensor, EGR, replaced all the vacuum lines, new battery and cables, new starter, all new electrical relays, fuel pressure regulators, new fuel pump inertia switch, tuned up engine (incl. wires, cap, rotor, ign module, plugs and timing), and cleaned out the already sparkling-clean tanks.
2. My oil pressure will drop at idle to low-normal when the engine is warm. It never goes to below Normal on the gauge. I have replaced the gauge, sending unit, and oil pump. This is a long-term issue, and is not getting any better or worse.
View 2 Replies
I have a 2004 Cadillac it started to miss when your idling, a check engine light when on and it was #5 plug not firing so I changed the plugs in front 4 of them and also bought a coil pack and replaced that, but it still misses. What else can I check before thinking its a sticky Valve or internal engine problems.
View 6 Replies
My sons 04 f150 started to miss then quit on him then wouldn't start so he had a buddy pull it to a neighbors I went to check it out an hr later the first time i tried to start it it started ran for 2 sec then quit tried again and it would just crank no start went back 3 hrs later with my code reader no codes but he did say check eng was on when it quit first time so i try starting started up so i headed for home, it started running rough twice on way home but seem to come out of it both times.
View 1 Replies
Apparently yesterday (no known reason) my sons truck started to develop a miss (so it feels like to me).
2005 f150 5.4 auto 215000km 4x4 stx. No specific cylinder codes. All general codes.
P1000
P1464
P1550
P1703
P1780
None of which I can see causing the miss. No check engine lite, no other codes. Not sure what to look at next. I am starting to disconnect the coil packs one at a time and see if I can pin down the cylinder.
View 4 Replies
Question, my truck started to have a miss under normal acceleration, when I really get on it, it clears up? I also noticed a bad sulfer smell at idle. Im thinking the cat is possibly plugged? Truck had 172000ish on it, and the cat is original. I did do a big tune up this past fall, new plugs, coil packs, air and fuel filter. Should I put a new cat on it? And a new oxygen sensor?
View 9 Replies
I have a 99 b5 wagon 1.5 5sp and my cruise works when it wants to. I play with it constantly while on the highway and it's hit or miss. Are there any know problems with the switch or other part that could make this an easy fix? the cruise seems to work fine when i can get it to work.
View 2 Replies
It's happened since new, I figured maybe it would work itself out, but it hasn't. On the first start up of the morning, It will start fine, rev up and as it is reving down it will chugg, miss, and shake, for about 5 seconds or so until it reaches idle. If I put it in gear while it does it, the whole car will lurch and shake. It operates fine after that.
View 1 Replies
My 1999 Passat 1.8T (AEB engine) with 120,000 miles has run very well lately.............except for a recent problem. I drove 150 miles on southern California freeways, parked the car for an hour, then started it again. There was a distinct miss and the check engine light began flashing. I turned it off, let it sit for a couple hours, then plugged in a code reader. There were two codes, both the same - P-0302, "Cylinder #2 misfire". I pulled the cover off the engine, wiggled the wiring to the #2 coil, cleared the codes and started it up. There was no miss, maybe there was a little corrosion on the electrical connection?? I know there was a recall on the coils, but my car was too old to participate in the recall. Which it is - bad connection, bad coil, or something else? Or a way to diagnose it further?
View 2 Replies
2003 passat wagon 2.8l v6 with p0421 and p0431...a slight miss as well...
Cold start up is fine and initial driving. After car warms, there is a slight shutter at idle (just occasionally) and upon acceleration with low rpms. (It really feels like a miss) Went to AutoZone and came back with the codes above. I thought it might need a new coil but now I am not really sure. I want my performance back but seriously doubt cats are bad at the same time.
View 3 Replies
Traded in my 2006 mustang gt for a 2006 2.0T passat last week. As I was driving the car to work today the check engine light started blinking and the car started to vibrate as if it were about to shut off. The light eventually stayed on, I took it the the dealer and there not sure what the problem is, they say they've never seen this before.
View 15 Replies
The transmission was rebuilt approximately 8,000 miles ago. It now shifts erratically instead of smoothly when you take off from a dead stop. Sometimes it will go from 1st to 3rd. When you come to a stop, it downshifts erratically also. The fluid level is correct. The truck is a 1967 GMC pick-up with 1969 350 engine. Transmission about the same year.
View 3 Replies
My Treg starts to idle erratically. It feel as if it want to stall once every 30 seconds. Other than that it drives great. I talked to the dealer and they said that this is typical of VW's engine. It does not make sense. I did not experienced this when I first bought the car.
View 7 Replies
1996 Ford Contour 4cy. Runs great, except once in a while driving down the highway, it seems to go out of gear and then back in. Shakes violently. Have to pull over. Never know when it will happen. Once/twice a month maybe. Always when it is warm. Never in a Michigan winter. I have done all the normal tranny maintenance. Neutral Safety switch ???Other then that, the tranny shifts great.
View 1 Replies
I just bought a used 2010 Camry le with 39k on it. My concern is my car transmission working properly? Because it has some strange downshifting patterns. Whenever I take my foot off gas pedal I feel pull back just feels like car is braking by it self and plus transmission shift erratically overall its a great car. This is my first car driving with new 6 speed transmission. I used to drive 2001 Toyota Camry 4 speed auto it had smooth gear shifting. But is this is normal for 2010 Camry or should I take it to Toyota dealership.
View 10 Replies
i have a 2001 elantra with 136k. the automatic transmission (which otherwise shifts very smoothly and shows no sign of problems) shifts suddenly and erratically when i'm driving at a constant speed. I'll be traveling along (speed doesn't matter), and it will suddenly downshift, then upshift, then downshift, etc. this started off being very occasional, but now it randomly shifts every 5-10 seconds.
I've changed and checked the fluid, and tried replacing the Input Speed Sensor and the Output Speed sensor...that didn't fix it. it also does not blow a check engine code. I'm convinced there must be a sensor somewhere that is faulty. it really seems as though the transmission is electronically confused.
View 6 Replies
New battery installed a few weeks ago - 120k on 2001 Silverado. When it is rainy out, the gauge acts erratically (yesterday the needle was between 14 and 19, today it is between 9 and 14 and the battery light is on. What can I check to figure out what might be happening?
View 2 Replies
My Santa Fe driving me crazy. Have a 2002 Santa Fe 4 cyl with a problem. It will start when cold and run normal about 2 minutes. Then it starts running erratically like a misfire. If you let it idle this way it will stall quickly and not restart until totally cold again the next day. If you catch it quick enough and continually pump the throttle it continues to run rough until it starts to warm up. As it warms up the engine slowly improves until it reaches operating temp. At this point the misfire is much less but still there. If you shut it off for more than 10 minutes it will not start until the next day. There are no codes at this time. I have changed the coolant temp. sensor, the cam position sensor, fuel pump and screen, spark plugs and wires. I have also verified all timing marks on the crank, cams, etc. The crank sensor was replaced about 40k ago when the timing belt was replaced. What can I look for now???
View 2 Replies
Instrument panel on Altima shuts down or freezes up erratically? There is no conditions I have found when this happens consistently. Typically after leaving the car overnight in the drive next time around everything works properly. I have checked fuses in the car and under the hood. What causes this?
View 1 Replies
Engine idles erratically after it warms up. Strong sucking air sound from throttle body as engine idles from low to high. I have no codes on ODB II.
View 3 Replies
