Question about 1999 Audi A4
I have just bought this car and was disturbed by a noise that sounded like a washing machine when i am idle, the rev's tend to bounce to just under 1'000 rpm and the car sounds like it wants to cut out but doesnt.
When i am revesing i have a loss of power and i have to put a bit on the gas, i have taken it to a garage and had the computer plugged into my diagnostic plug and it was narrowed down to the throttle body,
i was told it may need cleaned as it may be slightly open and giving a false reading hence low power in reverse, he said its like a butterfly shape and may have dirt holding it open otherwise it will need replaced.
Does this sound correct?
Does it cost much to replace the throttle body?
ps the car is fine when accelerating. NO dash lights on
Check for a vaccuum leak around the engine (specifically the PCV line). You can usually hear a hissing sound if you listen closely. The leak will not allow proper intake when idling, hence the nearly dying part. More air is allowed in while throttling so it isn't as noticeable. You can trace the vaccuum lines from the intake manifold. If you can't find it, you can follow your HVAC lines, they are fed from the same spot.
If you take it to a mechanic who can recognize it, it is a relatively inexpensive repair. Usually just labor to tighten up the hoses.
Posted on Jan 28, 2009
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Posted on Jan 02, 2017
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