Golf IV / Jetta IV :: 2001 VR6 GTI - Idles On 3 Or 4 Cylinders / Runs Rough
2001 VR6 GTI....
Already done:
Replaced the coil pack and plugs
Measured resistance of plug wires (all at about 6K Ohm)
Replaced front O2 sensor
Replaced purge solenoid valve
Replaced coolant temp sensor
Replaced fuel filter
Replaced fuel pressure regulator
Replaced MAF sensor
Cleaned the throttle body
Cleaned the throttle position sensor
Ran a tank of seafoam treatment (injectors were new 6 mos ago.)
Checked running voltage of battery
It was smoking and stinking bad with a rich mixture. It improved with the MAF change but still runs like a farm tractor. Now it idles on 3 or 4 cylinders, runs rough through 3000 RPM then runs cleaner at above 3000 RPM, but only at light throttle. CEL is either on or flashing when driving.
Don't know what to do next - nice car not fun to drive like this. What this could be and how to test it?
Bmw - X3 :: When Cold Outside Car Starts And Idles Rough Until It Gets To Temperature
The problem I have is when it is cold out under 40 degrees, my car starts rough and idles rough until it gets to temperature. My research has concluded it may be cold start. Does this sound right?
View 5 RepliesPrius (2004-09) :: Starts Fine But Idles A Little Rough
Just recently my Prius Taxi with 340,000+Km has developed a little problem,it starts fine but after 20-30 seconds it begins to feel like it's not running properly on all four cylinders,if i go to the exhaust pipe it seems like it's spluttering slightly.
Yesterday I changed the plugs,checked air filter and all connections,everything fine, when I accelerate it feels hesitant but after the car gets up to temp it seems to go away,it only happens when i start it first thing or if it's been left for a few hours, it's never had the throttle body cleaned and I'm wondering if what I'm describing is a symptom of this?
Buick - Regal :: Rough Idles And Misfires On Cold Starts
1991 Regal, 3800 v6.
So here's an interesting observation. When i turn the ignition to ON, I hear no sound nor feel any vibration from the fuel pump. Is there any scenario where a fuel pump fails to prime yet kicks into gear after a start? So, I've got rough idles and misfires on cold starts. Before I start replacing parts my diagnostic plans is as follows:
Remove and inspect spark plugs.
Inspect and test starter coil/distributor (still have to research how to do this)
Test resistance on fuel injectors.
Test pressure drop on fuel rails.
Test compression for possible small head leak.
I'm wondering, if I do have a tiny head leak that is letting in a drip or two of coolant after hours of the engine sitting, will I be able to see this on the gauge doing a compression test? I've never done one before and still need to buy a gauge, but maybe I'm better off just doing the other tests and if they all check out I can be certain it is a minor head leak.
My assumption is that I have a leaking injector; just trying to do things the proper way.
Volvo :: 1994 850 Turbo Wagon Starts Rough And Idles Very High
My 94 850 turbo wagon starts rough and idles very high. the rpms dont come down. After turning car off, wont restart again unless I let in sit for a while.
View 11 RepliesFocus :: Ford Idles Rough Once Engine Starts Coming Up To Temperature
We have a Ford Focus wagon that idles rough once the engine starts coming up to temperature. When you first start the car it's fine. For example, today I started the car, drove it up the road to the store and it was fine, but upon returning to my driveway just a few minutes later, as the engine temperature was just starting to come up, it started idling really rough. The idle is so rough it sounds like it's on the verge of stalling, but it never has actually stalled. An oxygen sensor has been replaced and it was good for a while, but now the problem is back. The check engine light is on as well.
View 2 RepliesFord - Explorer :: Vehicle Starts And Idles A Bit Rough - Cylinder 8 Misfire
I just got a 4.6 4WD Explorer in for rough running. It had timing chain noise and some odd codes for primary coil H codes along with cylinder 8 misfire.
I replaced the coil to get rid of the "H" code and it was fine. Still misfires on 8, and I really don't care because it's coincidence that the timing could be affecting it or perhaps.... bent valves!
The vehicle starts and idles a bit rough. Can't go very fast, and of course I know I should run it as little as possible!
Here is the deal, how should I present this to the customer? Should I let him know that some valves could be bent after replacing the chain (and all associated parts) and that it could still be effed? Or will I be fine after replacing? Pretty much, where they had a tensioner failure/guide breakage and valves bent too?
Ford Aerostar :: 1994 Starts / Idles About 10 Seconds Then Begins To Idle Rough And Dies
I just replaced the water pump and put it all back together, now it won't run well enough to drive. Checked vacuum system, all sensor connections, hoses, gas cap, changed fuel filter, I can hear the fuel pump kick in, reset system with battery disconnected and have looked at everything I can think of so far.
Now - starts fine, idles about 10 seconds and then begins to idle rough and dies. If I use the throttle I can often keep the idle up, but then backfires or acts like no fuel and again dies. Used fuel cleaner and made sure there was plenty fuel in tank.
I am looking at replacing sensors at this point but which one first?? They get a bit expensive real quick.
Golf IV / Jetta IV :: 2003 - Only Starts When Driver Side Is Closed
So after the long saga of trying to get my 03gti VR6 running, I have come across the STRANGEST behavior I have ever seen in a car. Here's a little background. Two weeks ago driving in a snowstorm my car started sputtering and then died. Left me stranded on the side of the road. Towed it to my buddies house (he's a master tech for Lexus) and tried to figure out what was going on. It wasn't throwing any codes. I replaced the fuel pump relay and that didn't fix anything. Then I noticed the fuel pump wasn't priming when I opened the door. So I replaced the fuel pump. Now it primes when you open the door. Got it started, but it wouldn't stay running for more than 10 seconds, it was acting like it was running out of gas. Even tried disconnectig the battery and touched the pos and neg together. Still to no avail.
After a week of trying to figure it out, I tried starting it with the door closed. Now the damn thing runs. BUT. Here's the strange thing. It will only run if the drivers door is closed. If you open the door, it kills the power to the fuel pump. If you leave the door open, it'll eventually die after roughly 10'secs. If you get out and close the door, it'll stay running. I'm guessing when you close the door it starts sending power to the fuel pump again. Everything else works. Power windows, door locks, mirrors, ect. The local vw shop in town said it might be a bad door switch or the CCM. But the lights come on when you open the door and go off when you shut it. Fuel pump primes when you open the door.
Golf IV / Jetta IV :: 2003 1.8T - Reverse Not Engaging On Cold Starts / Code P0732
I am having a problem with my MKIV, @ 182k. I think problem first arose a couple months ago when reverse began not engaging on cold starts, so I would have to sit there 5-10 minutes waiting for car to 'warm up' enough for reverse to engage. This led me to taking it to a local tranny shop who I asked to change fluid only, which they did. Problem persisted however, but forward driving was noticeably much smoother. If that matters. I gave up on it, since I knew it was only reverse messing up, and started parking in reverse overnight etc.
Simultaneously I had a code for P0420/P0411 (the SAI incorrect flow crap which causes catalyst inefficiency) so I went ahead and swapped out the cracked SAI plastic hose leading to stock airbox, after doing so I reset the CEL and ran the car. And it ran like crap, I think it was in limp mode (i had never experienced this in my Jetta) from what Ive read, but not sure. So, I pulled to the side, and restarted car, let it sit, same problem. Finally, after 3-4 cycles it threw a CEL, which ironically FIXED the problem. It ran fine from then on. Made it home, hooked up scanner and CEL code was P0732, which I read elsewhere is a 'Gear 2 - Incorrect Ratio' meaning 2nd gear is messed up somehow.
So, overnight I reset CEL and today in the morning I let it idle for 10 minutes before taking off, immediately same issue, where car will not accelerate/ change gears it seems. Went back straight home, waited for CEL to display, and VOILA, runs fine again. Same code P0732. Running fine as of writing this. Problem only arose after taking a swing at SAI code and reset of CEL's. Once CEL lights up its fine.
Ford F-150 - 1997-2003 :: Truck Starts And Then Immediately Stalls / Idles About 3 - 4k RPMs
If I don't keep in the throttle immediately after start up it will stall a lot of the time. It doesn't do this every time or if it sits for a while but if I drive it and then stop off at a store or something and then go to start it back up it gives me this problem. I notice it idles about 3-4k RPM's when I stop at a light or something too.
View 14 RepliesGolf IV / Jetta IV :: 2003 GLI 24v VR6 Running Rough And Stalling Out
I have been beatingy head against the wall for the last month with this car. It started out by just running really rough and stalling out. Found out that I had a bad clamp on the air intake that attaches to the throttle body. Replace that after I already replaced the MAF. Everything was great till couple days later then the car just crank crank crank no fire....
I cleaned the grounds pulled the plugs and coils, had perfect spark. Put everything back come to find out after going thru my Bentley manuals I jumped around the fuel pump relay fuel pump kicked on perfect started great! Replaced the fuel pump relay BAM! Ran great!!!! For 2 days..... After that right when I pulled into the drive way the car would not start.... So I tried everything again.... To no avail..... Check the codes again, now I'm throwing these codes which yes I did cross reference in my Bentley manual.
P1117- O2 sensor heater circuit bank 1 sensor 2 short to ground
P1198- O2 sensor heater circuit bank 1 sensor 2 electrical malfunction
P1472- EVAP emission control LDP circuit short to ground
P1516- Intake manifold changeover valve circuit open
And the dreaded same code I've had the whole time........
P0102- Mass or volume air flow circuit low input.
I have also tried tracking down any bad wires, and testing resistance...
Golf IV / Jetta IV :: 2003 2.0 Won't Rev Over 3k / Start And Idle Rough
I have a 2003 2.0 gas Jetta (181k miles, automatic.) that won't rev over 3k, starts rough, idles rough and wont stop setting a P0341 cam position sensor code.
The car was not running when I got it, I replaced the coil pack and it ran but not over 3k. Cleared codes, it sets the P0341 immediately.
Had timing belt, water pump, tensioner and cam pos sensor replaced. Still, sets p0341 code, starts rough, idles rough and wont rev over 3k.
The throttle servo makes a little noise when actuated, shop thinks this is my demon - suggests replace throttle body. This car is for my son who will be taking it to college soon.
Golf IV / Jetta IV :: 2003 VR6 Rough Idle On Start?
I'm having a little issue with my 03' vr6. I've had the car for almost 2 months now, which it's pretty new to me, since about the time I got it, the car would sometime roughly idle on start, just for a few seconds, maybe for 10-15 seconds, and then it'll go back to idling at 600-800 rpm and being normal.
This has happened maybe 5 times since I've owned the car, and since then I've changed the battery, and cleaned my MAF. The other day when I started my car it (the rough idle on start) lasted for maybe 30 seconds, so it kinda scared me a bit.
Also there is no check engine light. Other than the weird idle on start, the car feels responsive, quick and there doesn't seem to be lack of power. This is the only mk4 gti I've driven fast in, so there may be lack of power and I just don't know it.
Golf/GTI VII :: Rough Idles And Stalls Out / Bank 1 And 4 Misfiring
My gti with 5k miles will be in the dealership 3weeks on Monday! No one has been able to diagnose the problem! I called VW corporate and they told me that the dealer was working with their tech support and engineers.
The problem is has really rough idle were it stalls out. Bank 1 and Bank 4 are misfiring. This is the part were they are stuck. Once they remove the oil cap the car runs perfect! It stops all misfires and idles perfect. They've ran smoke test, compression test, vacuum test. Replaced pcv, high flow fuel pump, intake manifold.
Ford F-150 - 1997-2003 :: Idles Rough And Seems To Lack Power
I am working on a 97 4.6 with 146k for a friend. It idles rough and seems to lack power (then again a 4.6 lacks power )
Has New:
plugs
wires
coil packs
fuel filter
sea foam intake
sea foam fuel
I have checked:
proper egr function
vacuum leaks
cleaned IAC
steady 17-18 in vac
clean air filter
cats do not seem to be getting too hot.
no codes
KOEO test ok
KOER test ok
The plugs worked some. Dirty MAF, clogged cats??
Golf IV / Jetta IV :: 2003 - Rough Idle About Every 30 Seconds At Low 700 Rpms And Bounce Up And Down A Little
Random rough idle about every 30 seconds at low 700s (rpms) and it'll bounce up and down a little. The code was p1515 (No CEL or other lights have come on yet) which is something about the intake manifold valve and there is an air-shooting noise that is pretty loud but just sounds like air that's being lost somewhere like maybe a leak and that happens when i rev right before you can hear the engine rev the air/shooting noise occurs. I don't really think I'm losing power but I got the car recently so maybe I am and don't notice it. If this is a common leak or something with the intake manifold valve let me know,
View 2 RepliesFord Ranger / B-Series :: 2003 Truck Idles A Little Rough - Code P1450
Where to start looking to resolve this code. It is not an intermittent code. It returns after about 3 to 4 key turns. Truck idles a little rough but runs fine. I have looked up the code and causes but wondering how to deal with this directly and fixed it. I'm wanting to sell my truck for something bigger and would like to solve the issue before hand. 2003 Ford Ranger Edge...
View 4 RepliesGolf IV / Jetta IV :: Idles While Parking - Got Misfires / MAF Low Air Codes
So I bought a used 1.8t back in august. My second golf, up from an mkiii and I love it. However, the previous owner installed a CAI and being that he lives in the desert, probably never had any issues taking on water. Fast forward to my problem, got caught in a rainstorm, limped it home with the CEL and the traction lights on. it died like three times trying to get it home, but it still would idle when I parked it.
Now I've used the search feature extensively on this problem, and what I've down so far is to take off the intake and reroute it about six or seven inches from the maf, I've cleaned the filter, maf, pancake pipe, and SMIC with denatured alcohol and those are all currently drying. When I took the IC off, specifically the connection between the pancake and the IC, a good three cups (~30oz/850sillyliters) of water dumped out.
Again, my car still was idling when I parked it. Scanned the CEL and got misfires and maf low air codes. Before I started tearing down the intake I took the coils and plugs out and put my shop lights above the valve cover to generate a little heat, maybe make a lil water evap from the cylinders. I live in a pretty arid climate, IE all the water that fell onto my garage floor was gone in 24 hours. Prolly wishful thinking but whatever.
My plan next is to put everything back together when it's all dry, pour a lil oil down into the cylinders, and crank it while the spark plugs are out. Hopefully any residual water will shoot out, along with the oil/gas, and I can go back to enjoying my life.
Also, the intake is hot. I'm thinking any water that made it past the intercooler would've been steam/vapor and I shouldn't need to remove that? Also it seems like it's in a conformation that would force any residual water to drain either into the cylinders or back into the intercooler, so I really don't see any gains by removing and cleaning it