Loss of power, while in cruise control.

[PineappleBrains]

Earlier this evening on the highway while in cruise control I had a strange issue.
Going up a slight incline all of the sudden I lost power, my ESP and EPC lights came on, and the engine was running very strange. It wasn't stuttering but was louder and vibrating a whole lot more than normal. I pulled over and shut the car off for a couple mins, started it up, everything was normal and continued. About an hour later the same thing happened and when I started up the car again the check engine light was on.
I had my room mate scan it when I got back and it came up with ECM and PCM processor errors.

Not sure what kind of problems this would be. All the searches on cruise control didn't turn up anything like this.
Anyone heard of something similar or point me in the right direction as to what the problem would be?

The cars a turbo'd r32. Any other information you need I'll gladly supply.

Most recent picture just because I never post. Too bad it's already a couple months old.

[rconn14]

This has happened to me, but I'm not turbo'ed. When I shut the car off and turned it back on a minute or two later it went away. Scanned the car right after it happened and I had no codes. Same symptoms however. Has probably happened 3 times in 50,000 or so miles. I was cruising next to an R32 guru and he said it sounded like misfiring. Sounds like a computer error/electrical gremlin if anything...

[VincewagenR32]

check the cam sensor screws. they get loose and have given some ppl these simalar symptoms.


http://forums.vwvortex.com/showthrea...am+hall+sensor

[graeme86]

I have a dedicated page on my Webspace for this now:

http://www.users.on.net/~graeme86/ca...camsensor.html

In this case, however, I would also check the function of the brake light switch on the pedal, given that it happened when the CC was engaged.

[simple_man]

Mine C2 software was doing it real bad. Will cruse for some 3-5 minutes then power loss following check engine light. Scanned with no codes.

Flashed with UM code, problem went away. Never came back.
So it can be code related.

[PineappleBrains]

I have a dedicated page on my Webspace for this now:

http://www.users.on.net/~graeme86/ca...camsensor.html

In this case, however, I would also check the function of the brake light switch on the pedal, given that it happened when the CC was engaged.

Checked both those bolts and they were secure.
Wouldn't the brake light switch only cause the CC to turn off? Not cause a loss of power?

[abeR]

if its faulty it could probably do a number on either.

possibly.

[VincewagenR32]

Checked both those bolts and they were secure.
Wouldn't the brake light switch only cause the CC to turn off? Not cause a loss of power?

we mentionsed the CAM sensor screws as it sometimes gets overlooked as a issue. but back to the mission at hand...

has your car had all its Recalls done? The brake light switch is one of them. check with your local dealer if you havent already.

[graeme86]

Wouldn't the brake light switch only cause the CC to turn off? Not cause a loss of power?

If the ECU thinks the brakes are on, then it cuts the engine power...it's a safety cut off they have programmed in.

If you don't have the latest switch then certainly change it.

[PineappleBrains]

we mentionsed the CAM sensor screws as it sometimes gets overlooked as a issue. but back to the mission at hand...

has your car had all its Recalls done? The brake light switch is one of them. check with your local dealer if you havent already.

Just got off the phone with the dealer, the only open recall is the ignition coils. Which I made an appointment for. But everything else has already been completed.

[gnatman]

Did your idle change too? what if you unplug the maf. does the car still die or does it run better?

[PineappleBrains]

Did your idle change too? what if you unplug the maf. does the car still die or does it run better?

The idle changed when it happened in cruise control and also after I cleared the check engine light that night it got a bit smoother. The car has never stalled out on its own before though.
Ill check what happens with the maf unplugged later tonight after class.