2.8L 12v idle problems
 

Hey everyone, I have a 1996 A4 Quattro 2.8L. For the past couple months my car has had a funky idle, it jumps up and down constantly while idiling. When it first started it was not too terrible, but I think its getting worse. Any ideas on what it could be? I have heard possibly the throtle body or even the EGR system may need to be cleaned up. Any ideas?
Thanks!
-Dominic

RE: 2.8L 12v idle problems
 

it could be you need to clean the throttle body out and any vent pipes

RE: 2.8L 12v idle problems
 

is there a description on how to clean out the throttle body, because the same thing is happening in by 2.8 b5.

RE: 2.8L 12v idle problems
 

its on one of the other forums im not sure which but its a simple clean out of the barrel and throttle flap to prevent it sticking

RE: 2.8L 12v idle problems
 

thanks a lot, i'm gonna see if i can find it.

RE: 2.8L 12v idle problems
 

if you cant ill have a look;)

RE: 2.8L 12v idle problems
 

hi
is this car fitted with a idle stabalizing valve
had this problem on my coupe 20v broken wire to stabalizing valve repaired wire problem sorted

RE: 2.8L 12v idle problems
 

i honestly have no idea, and i cant find that article either :(

RE: 2.8L 12v idle problems
 

You need to do a leakdown dompression check to determine if there was any valve damage. If that comes back good then check your vaccuum lines for cracks and leaks, then try cleaning your MAF too. These are simple things to do and can save a lot of hassle and time, not ot mention money.

RE: 2.8L 12v idle problems
 

click this link to solve your prob cleaning the iac