PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

How To Check Tps For Correctness?

Old Dec 30, 2005 | 03:02 PM
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Default How To Check Tps For Correctness?

After installing my shaner T/B last week, my idle is much higher now. It goes up to 13-1400rpm, and very slowly comes back to around 850. Like in stop-n-go traffic,when I push the clutch in ,idle goes way up,then very slowly comes back down. Any info on how to check the tps with a meter, or links on this how to, possible a relearn?thanks
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Old Dec 30, 2005 | 03:04 PM
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https://ls1tech.com/forums/pcm-diagnostics-tuning/284479-finally-how-tune-101-a.html this would be a good start
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Old Dec 30, 2005 | 03:29 PM
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Thanks, but I don't have a tuning program. Isn't there a way u can turn the key on, and measure the voltage, certain volts at closed, and not to exceed ad wot?, thanks
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Old Dec 30, 2005 | 03:44 PM
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Sure, you can do that. I had a Haynes manual for my LT1 that gave the proper voltage readings (5V max, I think for that sensor). You just turn the key on, put your test leads on the input wires to the TPS and flip the throttle blade to see the output range.
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Old Dec 30, 2005 | 04:37 PM
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anybody got a link or how to article anywhere that has specific values? I'd relly like to know if the sensor is accurate at wot, and close on the closed end.
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Old Dec 30, 2005 | 09:08 PM
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The TPS should be NO higher than 4.64 VDC at WOT because the manual says the DTC sets at 4.65 VDC. The manual also says the closed throttle value should be NEAR 0.6 VDC.
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Old Dec 31, 2005 | 05:59 AM
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thank you, anybody with any mo info, I think i will go with this, what wire do u stick the tester in, besides ground to chassis?
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Old Dec 31, 2005 | 01:35 PM
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Originally Posted by BULLET99Z28
thank you, anybody with any mo info, I think i will go with this, what wire do u stick the tester in, besides ground to chassis?
The blue one.
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Old Jan 1, 2006 | 02:05 PM
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sweet, thaks ya'll
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