If the light is on there are DTC'S - diagnostic trouble codes stored in the PCM - engine computer ! Take it to a parts store an tell them your check engine light is on an you would like to know what codes are stored . They will tell you what the problem is , an be glade to sell you parts . That's how you get the light off !
SOURCE: service engine soon light?
Hi.
This webpage should detail all the information you need. -
http://www.synthetic-direct.ca/technical/reset_oil_service_light_Ford.htm
Hope this helps you.
SOURCE: 1991 Honda Accord LX failed emission test on smog
not enough info. Typically, CO and HC together can be the result of poor fuel control or misfire, or worn components such as O2 sensor or catalytic converter, but without more data, repair recommendations are likely to waste money and not achieve success.
SOURCE: when I start my 94
sounds like you have a code in the computer that needs to be checked out which will send you in the direction to diagnoise the problem.you could have a couple problems.it could be a tps sensor,vacume leak,injector problem,etc.
SOURCE: building emissions history to pass smog test
if you are failing emmissions test your evaporator canister is expired replace it and then you and your car will get a green light
SOURCE: How do you set the service engine soon light on a 97 Ford Thunderbird?
The light can only be reset with a OBD2 Diagnostic tool. You can run by your local Advance Auto/Autozone and they will do that for you usually free of charge.
Hope this helps
Sincerely
Roger
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