1990 honda civic dx check engine light on when engine is cold

getresults

New Member
Question: I get check engine light on when engine is cold, OBD shows code 7 throttle position sensor. This has been already replaced.
Once engine is up to operating temperature I can turn off engine and restart and the light goes out.
The issue is that this automatic transmission will not shift to over drive till engine is hot and turned off and restarted clearing the check engine light.
Why is the OBD code still throttle position sensor bad. It was replaced and properly adjusted. Prior to it's replacement the engine would hesitate when accelerating so it was bad. Also note reset the OBD several times removing the battery terminal.
Any reply's would be appreciated:.
 

RonJ

Banned
Measure both the input and output voltages from the TPS plug.
 




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