3rd Gen / L98 Engine Tech 1982 - 1992 Engine Related

LB9 TPS Help

Old Dec 16, 2002 | 05:54 PM
  #1  
Wootah's Avatar
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From: Sarasota, FL
LB9 TPS Help

The past few days after shutting my car off, i get back inside and go to start it, to find out the engine is flooded with farkin gas and it will NOT start.. today it took me approx 30 cranks on and off at WOT to burn the gas and start it. I hooked my pc to it, and with the einge off it reads 3.0+ volts. We reset the damn thing and it just jumps back up to 3+(WOT) when we start it...thats at idle!! someone has got to know an answer im ready to drive my car off a cliff, its pissin me off, and even moreso, to the point where i donno wtf to do. Detailed instructions would be so helpful, I know one of you smart peeps may know how to get the job done. P.S. the MAP sensor was replaced 4 months ago, and the TPS a few days ago.. and im getting a constant 3.+ volts to it. I dont know what to do
Old Dec 16, 2002 | 06:59 PM
  #2  
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From: Richmond Hill, GA USA
Unplug the sensor and see what voltage you get. If you still get 3.0 Volts, then either you have a short to power on the signal wire, or the ECM is fried. If it drops the 0.0 volts, then you need to measure the 5 volt reference going to the TPS. If its higher than 5 volts, then you either have a short to power, or the ECM is fried. Also measure the resistance to ground on the ground wire. If all else checks out, then you probably bought a bum TPS. Next time, get an AC Delco sensor Also make sure that the arm of the TPS isn't getting stuck on the side of the TB. When I installed my Holley 52mm TB, the TPS would get stuck at 50%. I had to do some grinding to make it move freely. Good luck.
Old Dec 16, 2002 | 07:14 PM
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Wootah's Avatar
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From: Sarasota, FL
This is my 2nd new TPs, same thing with the other one, thats why i thought it was bummed. Ok ill try those things and let you know whats up, thank you.
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