Unusual rpm drop
#11
11-28-2006, 02:29 AM
RE: Unusual rpm drop
ORIGINAL: BaconBait
You may want to try the coolant temp sensor. It controls how the car idles. I replaced mine along with the spark plugs a little while ago and it runs 100% better now. Temp sensor and o-ring are cheap, even from the stealership. Make sure to get the clip also. They have a tendancy to break. Make sure to drain the coolant or it will end up all over the back of the motor.
You may want to try the coolant temp sensor. It controls how the car idles. I replaced mine along with the spark plugs a little while ago and it runs 100% better now. Temp sensor and o-ring are cheap, even from the stealership. Make sure to get the clip also. They have a tendancy to break. Make sure to drain the coolant or it will end up all over the back of the motor.
#12
11-28-2006, 02:36 AM
RE: Unusual rpm drop
ORIGINAL: onepoint8tee
Did you do a TBA after you hooked the battery back up? Its a must whenever youve had your battery disconnected.
Did you do a TBA after you hooked the battery back up? Its a must whenever youve had your battery disconnected.
#13
11-28-2006, 03:08 AM
RE: Unusual rpm drop
Some TBA info for you... Dont know if you have vagcom or not, i can never remember?
http://www.ross-tech.com/vag-com/cars/throttlebody.html
http://www.ross-tech.com/vag-com/cars/throttlebody.html
#14
11-28-2006, 12:42 PM
RE: Unusual rpm drop
This morning I turned the key to the on position and left it there.
I popped the hood and could see the throttle actuator? moving around. It seemed to reset the notch that represents the trottle being completely off.
It took about 30-45 seconds total.
It corrected the issue with the idle drop.
The 2 times I had the battery disconnected in the past, I never had to reset this. It seemed to work it out OK without it.
Also, starnge, I read through the Haynes manual checking the sections on replacing the throttle body, and other TB related info, and nowhere in the haynes does it mention the need for or the procedure for a TBA after removing the battery.
So thanks for the comments and help everyone, I learned something new about my car today.
I popped the hood and could see the throttle actuator? moving around. It seemed to reset the notch that represents the trottle being completely off.
It took about 30-45 seconds total.
It corrected the issue with the idle drop.
The 2 times I had the battery disconnected in the past, I never had to reset this. It seemed to work it out OK without it.
Also, starnge, I read through the Haynes manual checking the sections on replacing the throttle body, and other TB related info, and nowhere in the haynes does it mention the need for or the procedure for a TBA after removing the battery.
So thanks for the comments and help everyone, I learned something new about my car today.
#16
11-28-2006, 04:50 PM
RE: Unusual rpm drop
Good, you have fixed it. I had to clean my throttle body, to stop this behavior (it was really dirty, carb cleaner was not able to clean all sh.t from there, so had to clean mechanically), then realigned it with vag-com.
#19
11-28-2006, 10:24 PM
RE: Unusual rpm drop
ORIGINAL: raimond
Good, you have fixed it. I had to clean my throttle body, to stop this behavior (it was really dirty, carb cleaner was not able to clean all sh.t from there, so had to clean mechanically), then realigned it with vag-com.
Good, you have fixed it. I had to clean my throttle body, to stop this behavior (it was really dirty, carb cleaner was not able to clean all sh.t from there, so had to clean mechanically), then realigned it with vag-com.
I got back in the car after work today, same symptoms. Whatever happened to smooth it out a bit in the morning I dont know, but after work the rpm drop was there again.
So, I came home, disconeected the battery, pulled off the intake hose, and began to clean the TB. It was filthy. Seems like I cleaned it about 5k ago when i did the t-belt, maybe not. Anyway, a lot of carb cleaner and 1 dirty old toothbrush later, I now have a clean TB.
Hooked everything back up and went for a drive, problem gone, idle back to normal.
I think i'm going to start cleaning my TB out at every oil change, since it takes only a few minutes to do. That way I'll know its clean.
#20
11-28-2006, 11:39 PM
RE: Unusual rpm drop
Hmmm... Maybe the TBA losened something up and then got stuck again by some sludge/carbon. Good to hear you fixed it (again). Did you do another TBA when you were finished?