Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

TPS Connector/switch problem?

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Old Apr 2, 2009 | 02:15 AM
  #1  
camaro87-alex's Avatar
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Joined: Mar 2007
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From: Norway
Car: 1987 Chevrolet Camaro SC
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 3.42
TPS Connector/switch problem?

I think my tps connector is bad...

I have had a lot of idle problems on my 87 TPI Camaro..305 Engine..

Today I was going to check the TPS voltage. It is a brand new TPS sensor.
I put a jumper fire from the terminal in the middle and measure with voltmeter between that one and ground..I got around 0.54 to 0.56 volts..

If I just touch the tps sensor wiring harness a little bit with my finger the volt goes up to 4.5volts...and then I mean just a little bit with my finger...I guess this is affecting my driving because when engine runs and car shakes from driving it would affect the volts??..

Don't you think I should replace the connector??..
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Old Apr 2, 2009 | 11:53 AM
  #2  
BigBadLou's Avatar
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Joined: Jul 2004
Posts: 2,989
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Car: '91 Z28 convertible
Engine: TPI
Transmission: T5
Axle/Gears: 3.27 posi disc
Re: TPS Connector/switch problem?

You can peel off the tape on the wire loom and check out the wires. They tend to fray after two decades on the engine, no surprise here. If they are touching, the engine won't idle right and might just shut down.
If you remove the connector from the sensor, check it out with a flashlight. If the pins inside are solid and don't move, that's good. Look for maybe debris inside the connector that could be causing a short.
Simply make sure it's all clean and in good shape.

My TPS connector (when I bought the car) looked like this which was causing random shutdowns of the engine: http://www.austinthirdgen.org/galler...1_TPS.jpg.html

Let us know what you find.
Lou
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