Question about 1984 Cadillac Eldorado
I am unable to clear code 27 (TPS) by pushing the "OFF" and "HI" buttons on the ECC. I replaced the TPS last year. The car only has 54,000 original miles, and is running great. Do I need to replace the TPS, just to get that annoying light turned off.
No you might have to get someone with an OBD hand held (on board diagnostic) computer and clear codes that way
Posted on May 15, 2009
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Posted on Jan 02, 2017
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Nov 18, 2017 | Cars & Trucks
TPS not mounted securely.
TPS circuit short to ground or another wire.
Damaged computer (PCM).
to fix this code you can try this:
Carefully check the throttle position sensor (TPS), wiring connector, and wiring for breaks, etc. Repair or replace as necessary
Check the voltage at the TPS (refer to a service manual for your vehicle for specific information). If the voltage is too low that is indicative of a problem. Replace if necessary.
If recently replaced the TPS may need to be adjusted. On some vehicles the installation instructions call for the TPS to be properly aligned or adjusted, consult a repair manual for specifics.
If there are no symptoms at all, the problem may be intermittent and clearing the code may resolve the issue temporarily. If this is the case then you should definitely check the wiring to be sure it's not rubbing on anything, grounding, etc. The code may come back.
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