TPS test

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Mar 6, 2009 | 01:13 PM

deadcatsrule

Thread Starter

why me

Joined: Feb 2008

Posts: 61

Likes: 1

From: indiana

TPS test

I have a 85 GSL-SE and was tuning it up and decided to check the adjustment for the TPS with 2 test lights.The problem is I only have all or none of the lights on .There is no 1 light only .Bad TPS ? It has always idled very low 400-500 rpm's
thanks DC

Mar 7, 2009 | 11:24 AM

deadcatsrule

Thread Starter

why me

Joined: Feb 2008

Posts: 61

Likes: 1

From: indiana

for more clarification if
i hook up my test lights to the right plug and turn the tps adjust screw .the two lights are ether both on or both off.yes my tester is wired correct

Last edited by deadcatsrule; Mar 7, 2009 at 11:24 AM. Reason: spelling

Jul 26, 2009 | 12:36 AM

rusttoriches

Junior Member

Joined: Jul 2009

Posts: 32

Likes: 0

From: gardena

I have the same exact problem when adjusting my tps. Can't seem to find an answer on this forum on this problem, did you find out what was wrong with it?

Jul 26, 2009 | 09:08 PM

mjm4jc

84 SE

Joined: Sep 2005

Posts: 1,004

Likes: 15

From: Summit Hill, PA

Quote:

Originally Posted by deadcatsrule

for more clarification if
i hook up my test lights to the right plug and turn the tps adjust screw .the two lights are ether both on or both off.yes my tester is wired correct

Even though you think your test lights are correct, the only real way to find out is to do the test with the voltmeters. Also, check the resistance according to the FSM. At idle, you should have about 1,000 ohms. At wide open throttle (TPS fully extended), you should have about 5,000 ohms. If my memory is right, take the plug off the TPS and have the plug facing you so that it looks like an upside down face (without the smile). Check resistance at the top prong and bottom right prong.

Mike