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| TPS Voltage reading 15+ volts (Page 2/2) |
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KissMySSFiero
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APR 28, 01:24 PM
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| quote | Originally posted by Rjberner46:
Old multi meter was bad. I'm getting 5 volts now so my ECM seems to be alright. I do need to change out the TPS. When I tested the signal there was not change as I increased the throttle position. Hopefully that fixes my high idle. Baby steps. Thanks for the input. It is appreciated. |
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The TPS doesn't cause a high idle. That's usually a vacuum leak or bad idle air control(IAC) valve.
As LFiero67 stated. the signal wire should read from .5V to over 4V at WOT. ------------------
SSFiero@Aol.com
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Patrick
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APR 28, 04:39 PM
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| quote | Originally posted by Rjberner46:
...my high idle.
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Red flags in This thread.
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traceymac
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APR 28, 06:38 PM
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i have replaced tps, iac ect among egr, chasing a erratic up and down idle. i had old always charging battery so replaced today, thinking maybe not getting good voltage. it finally went down and stayed at 110 rpm for a little while, but then went back to 2400rpm and gradually came down and low enough that it killed. did a new code check and it showed a 02 error, and continued to say check TPS for mal aligned adjustment. could a bad o2 sensor be screwing up the TPS ? curious why 02 sensor code would include this about TPS in the same sentence ? BTW 87 GT 2.8 any help would be good ! thank you
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phonedawgz
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APR 30, 10:53 PM
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Adding a question off the original topic is considered somewhat rude. You should start a new topic with your question. Anyway, the ECM in the Fiero is programmed to have a rather high idle after it is first connected to the battery. So yes, replacing the battery will make your Fiero idle rather fast on the first start-up, assuming you let it run long enough to get to the slow idle. If not the second and additional start-ups will be at a rather high idle until the ECM learns the engine. If you have additional questions, you do need to start your own thread.
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traceymac
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MAY 01, 01:13 PM
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sorry for piggybacking this post. also thanks for your reply. what about the code description showing o2 sensor and check tps for adjustment ? are the 2 related ? thanks again
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