How can i tell if my computer has went bad on my 1997 chevy lumina 3.1?
Patrick, car places refer to the computer as the Engine Control Module, or the ECU.
According to CarsGuru.com: "If you are having a bunch of codes that don't mean anything then you might have an ECM going bad, but first you need to make sure all of the powers and ground paths are clean and tight, then clear the system and run a relearn for the ECM, usually about 20 minutes driving normally will do this, if the check engine turns on again then have the codes read and repost back here for further diagnosis. The computer or ECM controls all of the fuel delivery, spark timing and on some vehicles the charging system, that is why it needs a good power and ground pathway, ECM's do fail but I have found that a lot of problems are related to either a power supply or ground, this can be very time consuming. "
"The ECM will remember that there was a failure and still have a light and a code, you need to clear the system before trying to retest, the best way to clear it is to disconnect the negative battery terminal, turn on the headlights, wait 30 seconds, turn off the headlights, reconnect the battery , start en"gine and drive normally, the ECM should relearn in about 20 minutes of driving unless there is still a hard fault then the check engine light will turn right back on and you can get the code..
One of the cheapest ways to replace an ECM is to pull one out of a wrecking yard.
May 11, 2015 |
Cars & Trucks