First off sorry if this has been covered before but the search engine has been down all day, and i need to figure this out fast.

OK I just swapped in a USDM swap thats been sitting for about a year. I started it up and drove it and everything seemed normal but after about 5 minutes of driving I get the knock sensor code.

If I shut the car off after I get the CEL while the car is still moving , and than I start it up again, the CEL comes back on in about a minute. And if I turn the car off and let it sit for a while and come back and drive it, the CEL will come back in about 5 minutes, and I don't know if thats because the car cools down or the ecu resets itself.

I really have no clue what could be causing the sensor to go off. If I start the car and pull the throttle and listen to the engine, everything sounds good, no clanging or scraping sounds. Could it be possible that the sensor is just bad and is acting up? I'm confused on why it would take a while for the CEL to on though..

thanks for any help

 

anyone know?

 

what car/motor? If you had to add knock sensor check ur wiring

 

its a usdm gsr

 

into a civic double check the wiring, if it is obd1 it should go to D3 on the ecu