Question about 1994 Chevrolet S-10 Blazer

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What are possible reasons for the service engine light to be going on?

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Too many to list, but a quick trip to one of the big autoparts stores, and they will give a free scan to point you and us in right direction of repairs, rather than guessing. Much faster and cheaper once you have those codes, or code. If it's not an obvious fix from code description, get back to us with those codes and we'll be glad to further guide and assist you.

Posted on Nov 13, 2010

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When you have a service engine light it means the computer of your vehicle has detected a problem. The easiest and simplest thing to do is to go to your local parts store and most of them will hook up their computer to your vehicle and they will pull or read your codes for you free. Post the codes they find on here and we can help you diagnose your problem or lead you in the right direction for a repair. var fctb_tool=null; function FCTB_Init_d7f8768ac8934c789d9ad5f39a49d9e1(t) { fctb_tool=t; start(fctb_tool); } var fctb_tool=null; function FCTB_Init_abff921fa787440ab3f79834017d0b6d(t) { fctb_tool=t; start(fctb_tool); }

Posted on Nov 13, 2010

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next time light comes on go to auto parts store and they can check it with their scanner and tell u the problem for free

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There are literally 1000's of reasons for the light to be on. It can be something as simple as a loose fuel cap or something as expensive as an engine issue. Most auto parts stores in most states will scan the code for free. Have the write the codes down and post them here for more help.

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The same thing applies for your Check Engine light. There are currently over 600 possible reasons why the check engine light could be coming on in that vehicle. Many of these possible faults can cause your engine and transmission to go into "reduced power" or "limp-in" mode and cause the symptoms you are describing. The ONLY way you are going to find out which possible reason is causing the light to come on is with a computer network scan....Unless you really want to work your way through over 600 "GUESSES".

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It is possible that your oxygen sensor needs to be replaced.
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The service engine light came on and is continually on what is the problem


When the Check Engine light/Service Engine Soon is turned on the computer control unit (called the PCM) has sensed a fault in the electronic controls of the engine/powertrain and/or the emission control system. When this happens you will seldom feel the car engine run any different. There are about 200 possible faults that turn the Check Engine light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen and Autozone parts stores do this testing for free.

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My check engine light came on this morning. Wondering if the reason could be that I have 66,500 miles on it and I haven't had my timing belt changed? Would that cause it? How many miles can you usually go...


TIMING BELT IS DUE TO BE CHANGED AT 60,000

The check engine light/service engine soon (yellow light) comes only when the computer control unit (called the PCM) senses a fault in the electronic controls of the engine and/or the emission system u will seldom feel the car engine run any different, there are about 200 possible faults that turn the light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen and Autozone parts stores do this testing for free.

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Check fuel cap light will not immediatly go out upon replacement of the fuel cap. Might take several days. You could go to a local autoparts store and have them read the trouble code (for check engine light) and reset it. If it was indeed the fuel cap the light should stay off after resetting it. Most autoparts stores do not charge a fee to do this.

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Engine lights come on for reasons, my step dads truck has a light on for bout the past 20000 miles, but it still runs fine. Hop into autozone and tell them ur engine light is on and u wanna know why. they fix u up

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You will need to have a reputable mechanic do a diagnostic check on the car to determine the problem. This should pull up a code number in your car's computer and help point the mechanic and you in the direction of the malfunctioning part/s.

Just today, I had a diagnostic check done on mine for nearly $45.00. The mechanic was able to figure out the reason why my service engine light was staying on. I knew my car's radiator fans failed to run when car's engine was hot except when the A/C was running. I had changed out the sensors and was never able to get the light to go out or get the fans working. They were able to determine that the 25 amp fuse for the fans located under the hood was blown. After replacing it, the fans worked as they should, my car runs cooler and the engine service engine light is now out. Of course there are many possible reasons why the service engine light may come on including problems with the car's emissions. A reputable mechanic can solve your problem.

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