My Check Engine Light Will Not Come On

Since the 1980s many vehicles have been built to be run by the engine computer unit ecu which controls vehicle s drivetrain and auxiliary systems based on input from the vehicle s sensors this computer will make adjustments to your vehicle s performance to keep your ride running smoothly.

My check engine light will not come on.

It might be a minor problem. But do you really want to take that gamble. Turn the key on all the check lights come on except the check engine light theirs no spark no fuel pump. Pull over tighten it and take a look at the cap to see if it.

If your dashboard before displayed the check engine light before and now it is not coming on then the dashboard warning light could have burned out. But there s a way to preview what the problem might be. If your car isn t feeling jerky or strange when the check engine light comes on the first thing you should check is the gas cap. After all if it s something more serious you could be left stranded.

If it does then the system is working. Once the obd system resets which occurs after a few drive cycles or a certain number of miles depending on the vehicle the light will come back on if the problem has not been fixed. Your local mechanic can usually diagnose the problem for about 75. If that light has come on that means there s a problem.

Recently it failed a smog check due to the fact that the check engine light would not come on. And you may even avoid the issues that cause the light to come on in the. Try removing a sensor harness and see if the light comes on. X research source warning.

It is not an indicator of trouble like the check engine light is. If you learn your vehicle s ins and outs you won t need a check engine light to tell you when something is wrong. This light is the centerpiece of your vehicle s on board diagnostics system obd. If your check engine light comes on it s best to take your vehicle to a mechanic to get it professionally diagnosed and repaired.

05 01 2018 by marvin hobbs. Don t ignore your jeep check engine light. This car runs great and in fact the emissions part of the smog test was we have a 1996 ford f 250 xl dual gas tanks. Recently it failed a smog check due to the fact that the check engine light would not come on.

It has an old battery but it still turns the motor over good just checked batt. I have a 1998 chevrolet s10 my check engine light will not come on i replace the bulb still nothing anybody got any ideas please let me know could it be a wire they cut at the computer. Add a comment.