Vibrating V8
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Vibrating V8
HI
I have an ABH 4.2L V8 in my Audi 100 and the engine often hesitate (with vibrations) to accelerate between 1000 and 2000 rpm (approx)
Some times, the acceleration is perfect.
I have tried to disconnect some sensor (O2, knock sensors, MAF, Idle valve etc...) but the problem persists.
It seems to be better with the O2 sensor disconnected but I'm not really sure.
I have changed injectors and fuel pressure regulator (I have a seconde engine for parts) without any success.
Air Filter (a cleanable) and Spark plugs are new ones.
I've changed timing belt a few weeks ago..
What do you thing of my problem ?
Thanks
I have an ABH 4.2L V8 in my Audi 100 and the engine often hesitate (with vibrations) to accelerate between 1000 and 2000 rpm (approx)
Some times, the acceleration is perfect.
I have tried to disconnect some sensor (O2, knock sensors, MAF, Idle valve etc...) but the problem persists.
It seems to be better with the O2 sensor disconnected but I'm not really sure.
I have changed injectors and fuel pressure regulator (I have a seconde engine for parts) without any success.
Air Filter (a cleanable) and Spark plugs are new ones.
I've changed timing belt a few weeks ago..
What do you thing of my problem ?
Thanks
#5
My A8 4.2 intake vacume leak pics....
<ul><li><a href="http://www.brittcrowell.com/2006/2006-02-08_Working_on_the_A8/">http://www.brittcrowell.com/2006/2006-02-08_Working_on_the_A8/</a</li></ul>
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