Fast Idle
Thread Starter
Drifting
Joined: Aug 1999
Posts: 1,468
Likes: 1
From: Kirkland WA
Fast Idle
94 LT1 Idles too fast with the TPS bolted to the engine, unscrew it and leave it hooked up and the car idles perfectly but I cannot install it and get the correct readings from the TPS or the right idle speed.
The installed voltage is 1.50 and .48 when hanging loose, it spans correctly.
Anybody had this problem?
Also has no Vacuum leaks and the IAC works like it should.
The installed voltage is 1.50 and .48 when hanging loose, it spans correctly.
Anybody had this problem?
Also has no Vacuum leaks and the IAC works like it should.
Le Mans Master
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
Is the TPS sensor or TB new? If "new" check to make sure it is the correct one for your application. If "old" why the problem all of the sudden did you do other work to the car or has the car always had a fast idle? Is the sensor indexed properly on the TB linkage?
I would tell you to drill out the mounting holes a little but your reading is too far off at 1.5V for that to help.
I would tell you to drill out the mounting holes a little but your reading is too far off at 1.5V for that to help.
Melting Slicks
Joined: Mar 2008
Posts: 2,351
Likes: 222
From: Delta B.C. Canada
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FYI....I posted an idle speed (on LT1) question a while back and was informed that the voltage at the TPS plug should be 5 volts.
