90/90Qs

I was driving home this morning around 2:30am and I decided to do a quick piece of spirited acceleration on a straightaway stretch before reaching my home. Not a long stretch or anything but I can redline 1st and 2nd gears and get halfway through 3rd before needing to slow up. Not too eager to hit major speeds but I got up to ~65mph just to feel the "power" if you will, when I let off the gas and suddenly the car begins to accelerate on it's own!! WTF I think to myself; Although this is not the first time I've had strange acceleration problems this is the most agressive it's ever been. Before I was having problems with the car idling or jumping to 2k rpm's for no apparent reason but they subsided when I changed my O2 sensor (which it was in desperate need of). This time it was accelerating in a way that shocked even me despite the fact that I like to get up to the speed limit fairly quickly. My car was accelerating at full throttle until it reached 5k rpms and holding!! I shifted into a higher gear to bring the rpm's down and I was thinking maybe the load would ease the throttling back but no, it continued to accelerate! I switched the key off for a quicke second and turned it back on thinking it would 'reset'... As soon as the ignition was on again it roared back to 5k as fast as it could. Again I tried to reset by killing the engine only longer this time, I shut it off and coasted until I reached the left turn lane to get into my neighborhood which must have been 5+ seconds and then dropped into second for a rolling start; it started right up, and sure enough jumped back to 5k again!!! I am completely dumbfounded by now, I actually have to do <i>everything,/i> I can to keep my car from accelerating to unsafe speeds through the neighborhood where I live, from driving in a 'too high' gear to riding the brake to killing the engine just to get it back to my house. This is F#@$%$% up!!! Then I parked the car, sat in it for 5 minutes with everything off, then restarted and again the car revs up to a 5k rpm idle and stays there. I let it run that way for about 30 seconds to see if it would settle but no.... I'm starting to believe the stories :[.

and I was just about to change my sig...

TurboEnvy52

is the throttle body opening up? is the cruise lever stuck?

lyonelll

Happened to me once then misteriously cured itself and never reappeared.

Stage-3-Emre

There was a 2-4 second delay in when the car cut throttle from when I actually let off the throttle (to shift, just to decelerate, ETC.) Needless to say, it freaked me out. I pulled over restarted the car and it had a violently cycling idle, like 800-3000 rpm over and over again. So I popped the hood and took the ISV's connector off, blew in it, put it back on the harness, restarted the car and the car idled fine. HTH?

repeater

edit delete
My A6 just got a recall for ice building up on the TB. I've seen cases of corrosion build-up on the side of the TB where the throttle lever is that ends up jamming the TB at times. This was really really common on GM 3.1's in Luminas and Cavaliers and what-not. Shoot the TB lever/spring side with PB blaster or other penetrating oil and work the throttle with the car off for about 2 minutes. It won't do it again after that. I do this every oil change.

Blake@NWAutoSalon

;-)

90/90Qs

j/k! ;D

90/90Qs

-Yep, pretty damn cold here, you're not missing anything!

Blake@NWAutoSalon

I have had only one drink officer...well maybe like 20. I dont remember. my accelerator was stuck in 5k rpms in 5th gear, I SWEAR!!!

audica

Your floormat is stuck between the pedals :P