Rough Idle and Hard Rev past 1400

ajreed93 · 04-28-2012, 11:49 PM

Have a B5 A4 2.8. Had the battery disconnected for about a month and went to start it back up. ran rough and had to keep my foot into it to keep it going. finally got to where it idles at about 400 and shutters. thought it might be the throttle body needing aligning and so i drove it on my road for about 2 miles and it still doesnt run good. wont accelerate at all, and it seems like its missing. seems to be a popping feeling if i go past 1200 and it will miss and then finally rev up but while driving it wont accelerate normally. No vacuum leaks, and it ran perfect before this happened. Cleaned MAF today and didnt change a thing. Any suggestions? Coolant tank also is empty but no leaks. Could this all be part of an air bubble in the coolant tank?
Thanks

4Driver4 · 04-29-2012, 04:22 AM

Quote:

Originally Posted by ajreed93

thought it might be the throttle body needing aligning

Me too.

Why not try doing a throttle body adjustment?

GTA_Driver · 04-29-2012, 05:37 AM

To align the TB leave the ignition ON but don't start the car. Leave it on for 2 mins.

4Driver4 · 04-29-2012, 06:12 AM

Quote:

Originally Posted by GTA_Driver

To align the TB leave the ignition ON but don't start the car. Leave it on for 2 mins.

Maybe, maybe not. Depends on the year of the car, which was not given.

On the drive by cable cars, VAG-COM is required for throttle body adjustment.

ajreed93 · 04-29-2012, 11:24 AM

It is a 99 pre facelift. 2.8. tried leaving key on, as well as turning on key, pushing accelerator in, holding for 5 seconds and then turning key off. didnt hear any clicking or whirs from the TB. any other thoughts?

4Driver4 · 04-29-2012, 12:31 PM

Quote:

Originally Posted by ajreed93

It is a 99 pre facelift. 2.8. tried leaving key on, as well as turning on key, pushing accelerator in, holding for 5 seconds and then turning key off. didnt hear any clicking or whirs from the TB. any other thoughts?

None of that stuff will do anything on a drive by cable car. You need VAG-COM to run adaptation.

ajreed93 · 04-29-2012, 10:46 PM

Does anyone know anyone on here that has vag-com in WA state?

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04-29-2012, 05:37 AM	#3
GTA_Driver AudiWorld Super User 2005 Audi Allroad Join Date: Aug 2004 Location: Toronto Posts: 2,487	To align the TB leave the ignition ON but don't start the car. Leave it on for 2 mins.

04-29-2012, 11:24 AM	#5
ajreed93 AudiWorld Newcomer Garage is empty, add now Join Date: Oct 2011 Posts: 5	It is a 99 pre facelift. 2.8. tried leaving key on, as well as turning on key, pushing accelerator in, holding for 5 seconds and then turning key off. didnt hear any clicking or whirs from the TB. any other thoughts?

04-29-2012, 10:46 PM	#7
ajreed93 AudiWorld Newcomer Garage is empty, add now Join Date: Oct 2011 Posts: 5	Does anyone know anyone on here that has vag-com in WA state?