New to Audi
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From: Where the army puts me.
New to Audi
In about a week I will be buying my first Audi, it's an 1988 90 Quattro.
I have had a few only VWs and I currently own a newer VW, is there anything I should look for or expect outta my new-to-me Audi?
I have had a few only VWs and I currently own a newer VW, is there anything I should look for or expect outta my new-to-me Audi?
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Audiworld Junior Member
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From: Where the army puts me.
I just bought the 1988 90 Quattro, it runs pretty good but starts kinda hard (it starts and the idle fades to off) and stalls at red lights (when the idle drops from depressing the clutch to slow down) every now and then. any ideas on what it could be?
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Audiworld Junior Member
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From: Where the army puts me.
How do you clean the isv? And I'm working on the tune up, just gotta wait til the parts come in.
What about fuel issues, are there any notorious issues in the fuel system? I have a gas smell in the cab of the vehicle but its not from the gas tank since the tank has no leaks and the trunk doesnt smell
What about fuel issues, are there any notorious issues in the fuel system? I have a gas smell in the cab of the vehicle but its not from the gas tank since the tank has no leaks and the trunk doesnt smell
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Joined: Mar 2009
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From: LA, California
How do you clean the isv? And I'm working on the tune up, just gotta wait til the parts come in.
What about fuel issues, are there any notorious issues in the fuel system? I have a gas smell in the cab of the vehicle but its not from the gas tank since the tank has no leaks and the trunk doesnt smell
What about fuel issues, are there any notorious issues in the fuel system? I have a gas smell in the cab of the vehicle but its not from the gas tank since the tank has no leaks and the trunk doesnt smell
After a cold start and warm up, you should be able to disconnect the electrical connection to the ISV and the car should still idle.
Instructions are on 20v.org how to set idle speed...
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97 a4 quattro idle, stalling
I'm having the same issued but u think i have narrowed it down to br, either the isv or pcv.
My only question is what do these look like I have no idea what I'm looking for, also when I check for parts at local stores the pictures I have seen in the threads don't match what they have so it's confusing..
I use my car for work with disabled people and would really like yo get this fixed before I get in to trouble. Thank you guys
My only question is what do these look like I have no idea what I'm looking for, also when I check for parts at local stores the pictures I have seen in the threads don't match what they have so it's confusing..
I use my car for work with disabled people and would really like yo get this fixed before I get in to trouble. Thank you guys
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From: Central Idaho
While the car is running if it has a stable idle disconnect the ISV, the throttle should start hunting up and down.
If it does this while it's connected then it's either really dirty or more then likely the diaphragm inside broke.
ISV = stabilize idle through vacuum.
If it does this while it's connected then it's either really dirty or more then likely the diaphragm inside broke.
ISV = stabilize idle through vacuum.
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It's having trouble coming to a stop when coming to a idle at a light.
It idles down the stumbles, sometimes dies.
My real question is ive searchrd the forums for isv cleaning isv location and just isv but this and another thread pop up.
Some say it's on the back of the intake manifold, mines not there
97 a4 quattro 1.8t AEB
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From: Central Idaho
I have the 2.0 and it's right on top of the back of the engine from the intake boot.
A silver cylinder, looks like the front for the I5
<a href="http://tinypic.com?ref=adfaci" target="_blank"><img src="http://i41.tinypic.com/adfaci.jpg" border="0" alt="Image and video hosting by TinyPic"></a>
When the ISV broke on my 94 in the middle of winter [-40F] not only did the idle go nuts but it did not have power. Good chance it would have stalled too if I tried.
As other posters noted check vacuum lines as well, a cracked line at an elbow can really screw with it running well.
A silver cylinder, looks like the front for the I5
<a href="http://tinypic.com?ref=adfaci" target="_blank"><img src="http://i41.tinypic.com/adfaci.jpg" border="0" alt="Image and video hosting by TinyPic"></a>
When the ISV broke on my 94 in the middle of winter [-40F] not only did the idle go nuts but it did not have power. Good chance it would have stalled too if I tried.
As other posters noted check vacuum lines as well, a cracked line at an elbow can really screw with it running well.
Last edited by egp320i; Jul 28, 2013 at 09:31 PM.
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