The check engine light could come on for a variety of reasons. Your car is loaded with electronic solenoids with voltages running to them. If you are getting low voltage at a Throttle Positioning Sensor for instance you will get a code for that. For around $100.00 at WalMart you can pick up a Code Reader. It will give you a code that you can look up in a service manual and it will tell you what the computer is reading as the problem. It will only get you in the ballpark, not diagnose the problem. For that you can utilize this forum or you can take it to the dealer or a repair shop and they can diagnose it for you, but in any event the Check Engine light doesn't come on for no reason even if the car seems to be running fine.
My Saturn SC-1 Service Engine light comes on all the time. I determined that it is a sensor at the top of the gas tank that triggers the idiot light. The recycled gases at the top of the gas tank aren't getting recycled efficiently enough for the Smog system, so it triggers the idiot light. I disconnect the battery for 30 seconds and the code goes away. The light will come on if I overfill the gas tank. Isn't technology grand!
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Wishfulthink
A rabbit crawled up under my daughters Saturn SC1 hood and chewed off wires going into the engine or tranny housing and the brake fluid resevoir. Had all kinds of warning lights. Some of the wires going into the engine block were chewed off really close to the housing but there was just enough wire sticking out to reconnect them by soldering them together and covering them with heat-shrink tubes. All is well now.
Try to find the other end of that yellow wire and repair it. Good luck.
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I just purchase the car for my daughter and the service engine is on.
Check engine light comes on intermittently; coil, ignition module, fuel filter, air filter, plugs have all been changed. Code still comes up for misfiring number one cylinder.
have the same problem hooked up my code reader says no codes
so I just reset it but comes back on in about a day or to
I have brought my Saturn 2000 in 3 times in a 5 month period because of the "service engine soon" light. The first time they told me my gas cap wasn't closed all the way. The second time my windshield wipers were also not working but they didn't know if that's why it came on. The third time they said there were small cracks in my gas cap and replaced it. Now for the fourth time it is on again. I'm not even sure I should bother to bring it in. I just don't have time to hang out at Saturn every month or so! If anyone else has any solutions please let me know!
We just bought our son a 2002 Saturn SL2 from a Saturn dealer as a Christmas present. He turned it on Christmas Day and the service engine soon light came on!
the check engine comes, code stated that it was the thermastat. thermastat has been replaced and a day later the light came on again, my son found a thin yellow wire that looks like it is coming from the engine block but can't tell where it connects to, wire looks like it eas chewed off by a rat, because there are little pelletes and prints on the hoses under the hood. Does anyone know what this wire is?
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