Question about 1998 Ford Taurus
There is a way of slightly changing the idle on your Taurus. I will tell you, but first you may want to test the seams of the intake manifold gasket. When you get a leak around the intake, or the Airhorn on top of it; the effect is the same as opening the Throttle and letting more air into the engine. This may be the reason the engine is running faster now.
Test your seams with a spray water bottle while the engine is running. If you have the engine stall or lose RPM you have found the leak. Fix it and the engine will run slower at idle.
The other way to lower RPM is an adjustment to the TPS. There is a slot on one end of the sensor. The Throttle Position Sensor is mounted on the Airhorn, has 2 screws and 1 Electric connector. It is about the size of a Butane lighter. If you can't get adjustment there, on the opposite side of the Airhorn from the TPS is linkage. There is an odd looking set screw where the linkage rests. It is made to be difficult to turn, but it will change the RPM.
Posted on Jul 20, 2010
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Posted on Jan 02, 2017
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