Question about 1991 Audi 100

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Audi car audi 100e 2.8 1991 when car is cold it starts up when car is hot it takes time and the revs gose to 1500 then it cames down also when drivening and slowing down the revs go up then came down i have changed the coolant temperture sensor stillthe same

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Sometimes there are two temp sensors, one for the gauge inside and one for the engine management. You have possibly replaced the wrong one. Have a look to see if there is another, if so disconnect one and see if gauge drops in car. if it does its the other that needs replaced.

Posted on Jan 23, 2009

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