Where do I check TPS voltage?
Thread Starter
Member
Joined: Mar 2004
Posts: 430
Likes: 1
From: Huntsville Alabama
Car: 89 IROC convert.
Engine: tpi 305
Transmission: T-5
Axle/Gears: 3.42 10 bolt
Where do I check TPS voltage?
OK I've got the instructions for checking the TPS voltage on my TPI, but there are three wires coming out of the thing. Which wires do I put my VOM on?
Thread Starter
Member
Joined: Mar 2004
Posts: 430
Likes: 1
From: Huntsville Alabama
Car: 89 IROC convert.
Engine: tpi 305
Transmission: T-5
Axle/Gears: 3.42 10 bolt
Re: Where do I check TPS voltage?
C'mon you guys. I know you know this. I need to get this car sorted out this weekend.
Pleeeeeeze.
Pleeeeeeze.
Senior Member
iTrader: (1)
Joined: Apr 2004
Posts: 536
Likes: 0
From: Prescott Valley AZ
Car: 87 Iroc Showcar - Saturday Nite Hun
Engine: 383 4-Bolt Truck Hyd Roller MiniRam
Transmission: B&M 700R4 - Edge 3200
Axle/Gears: BW 9 Bolt-TA Cover & Stud Kit - 3.2
Re: Where do I check TPS voltage?
Top Two
.540 closed- over 4.00v open. Think applies to yours.
Smooth linear increase as you go from closed to full
open.
HTH
Later
.540 closed- over 4.00v open. Think applies to yours.
Smooth linear increase as you go from closed to full
open.
HTH
Later
Last edited by jaykar; Sep 22, 2007 at 02:32 PM.
Joined: Jan 2005
Posts: 10,404
Likes: 492
From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: Where do I check TPS voltage?
BLACK and BLUE, should be around .60 with the key on, engine off and the throttle closed. It should be up around 4.50 volts with the key on, engine off and the throttle Wide Open. I cheat on the TPS settings slightly, to make the TCC unlock sooner and bring in the Power Enrichment (PE) fuel and timing faster.
Thread Starter
Member
Joined: Mar 2004
Posts: 430
Likes: 1
From: Huntsville Alabama
Car: 89 IROC convert.
Engine: tpi 305
Transmission: T-5
Axle/Gears: 3.42 10 bolt
Re: Where do I check TPS voltage?
Well I don't claim to be any genius with a VOM, but it appears that I have zero voltage from the TPS. With the key on, but engine not running, I checked the voltage for each terminal in the connector to ground. The top one had .02 volts, the middle terminal had about .05 volts, and the bottom had about 5.5 volts. running through the TPS, the voltage is 0 with the probes on the top two jumper wires.
What up?
I'll go check the colors.
What up?
I'll go check the colors.
Thread Starter
Member
Joined: Mar 2004
Posts: 430
Likes: 1
From: Huntsville Alabama
Car: 89 IROC convert.
Engine: tpi 305
Transmission: T-5
Axle/Gears: 3.42 10 bolt
Re: Where do I check TPS voltage?
Directly checking the voltage across the blue and black wires with the key on, I get .03 volts.
I gotta bad feeling about this.
I gotta bad feeling about this.
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