Question about 1986 Audi 5000 CS
Idles OK but when you put it in drive it stalls if you dont go right away. Reverse is OK and it doesnt stall at any speed other than stopped.
Back of throttle area ducting should be tight or worn collapesed hose causeing vaccum leak
Posted on Sep 24, 2008
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Posted on Jan 02, 2017
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Nov 30, 2016 | Isuzu Trooper Cars & Trucks
Engine stall or RPM fluctuates
This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control
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