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Your 1999 Saturn's service engine soon light stays on all the time how can you have this fixed?
Wiki User
∙ 17y ago
The check engine light comes on to tell you some part of your engine system is not functioning as it should. Soem large auto stores like AutoZone offer free diagnostics. There is a computer outlet or plug in port under the dash of yoru car. A scanning tool, handheld programmer will be plugged in to that port and it will download the codes inside the computer on your car. Once this data is downloaded, it will give a code number which will have to be crosschecked to see what the code means. Your car's check engine light will remain on until this fault is fixed. Sometimes a check engine light will come on and then go out. Did you recently add fuel to your car? Make sure you screw the gas cap on tight, otherwise the check engine light will come on due to the pressure of the fuel not being what is required. Tightening the gas cap will not immediately shut off the check engine light. Normally the computer will monitor the engine and after 50 miles or a certain number of cycles it will shut off the check engine light. If your gas cap is tight and the check engine light stays on, then you are in need of diagnostics.
Wiki User
∙ 17y ago
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