Question about 1995 Jeep Grand Cherokee

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Is there a way diagnose the "check engine" dashboard light without having dealer/mechanic electronic hookup?

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If it's a 1995 its not odbii and code reader plugs are different. You can do it by cycling the key on three times within 5 seconds, leaving the key on after the third time and counting the check engine light flashes. There is a pause between flashes to get first and second digits. Go to for more info and for code meanings. http://www.nagca.com/grandtech/troubleshootcodes.htm

Posted on Sep 04, 2010

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BUY AN OBD READER,IT TELLS YOU WHAT THE CODE # IS AND YOU LOOK IOT UP IN THE BOOK THAT,S ENCLOED WITH THE O.B.D.,THEY START AT AROUND 50$ FOR BASIC AND UP.

Posted on Aug 04, 2010

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1 Answer

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that little orange light is the check engine warning light.
that means there could be something significantly wrong
the light is turned on by the computer in the car, the computer was told by one or more of the electronic sensors that something is not correctly working.
Take you car in a service repair company or the dealer and have the "engine check light diagnosed" they will tell you afterward what could be not working correctly.

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see this chart troubleshooting and fix it.
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Check Engine or
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The Check Engine or Service Engine Soon light or an icon resembling the engine is called, in technical terms, the Malfunction Indicator Light or MIL. The MIL light comes on when your vehicle's computer detects a fault that can affect your vehicle's fuel economy and emissions. There is no button to reset the Check Engine light, but if the fault that caused it doesn't happen again, the light will turn off by itself. If the MIL light stays on, have the problem checked out, because in some cases, the problem could get worse if not repaired in time. Think of the Check Engine light as an early warning sign. To check why your MIL light came on, your dealer or mechanic will have to diagnose your car with a special scan tool.

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Engine rpms goes up and down at 1100 rpms


without my head under the bonnet its a difficult thing to advise as the newer the motor the more dependent it is on electronics but i would suggest checking all the vacumn pipes around the inlet manifold area then if they appear ok try cleaning the mass air flow sensor and then if still phasing try the stepper motor ,problem is a lot of these newer vehicles use advanced electronics now although most mechanics can tell you what the electronics are controlling they cannot know or be able to reset anything without the dealer ability to connect to the vehicle to the internet for diagnostics which is the latest way of creating more work for the dealers ,This problem could be associated with the power steering electronics whereby the road speed of the vehicle and engine RPM are all computed as one entity and even a spike in the voltage like a low battery can damage the chips in the computers and so its a dealer job to diagnose and reset the NEW units as they will not play around with the old ones ,no money in that is their now think logically .

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Does anyone know how to reset the check engine light on a renault espace 2001- 2lt petrol


Let me answer your last question first. Once the light is turned off, it will not come back on UNLESS the engine computer detects a problem with it's engine management. If the problem you are having is still alerting the computer, or if any problem is detected, the computer will turn on the check engine light again. The computer also stores trouble codes in it's memory for retrieval. As long as the light is on, the computer is telling you the problem is ongoing-it hasn't gone away.
Not too surprised you got three different ideas about what is wrong. That's kind of the nature of complex electronic controls diagnosing. The trouble codes don't tell a mechanic exactly what is needed to replace or fix it. they only direct you to where to start diagnosing and looking for the problem. Until a mechanic actually digs into your car and works with the codes, and uses his own logical skills, only then will he have a better idea of what is wrong. ( Why you need a trusted mechanic.)
If you want to post the codes here, somone might give you some helpful tips.
Finally, there is a way to turn the light off and erase the codes, but if problem persists, the light will come back on. Take off your battery negative cable for a minute, and then re-connect. Reset your clock and radio pre-sets, and you're good to go. Good luck.

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1 Answer

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2 Answers

Yellow warning light on dashboard what is it and can i till drive it


This sounds like the check engine light, it is safe to drive the car, but read about what causes this light to come on below. U can have any Kragen auto test the system for free.
Why my Yellow Check Engine is on?
The engine computer or PCM/ECM

All modern vehicles have a computer or the ECM (Electronic Control Module) that controls the operation of the vehicle powertrain (the engine and transmission). The main purpose of this is to keep the engine running at top efficiency with the lowest possible emissions. With constantly growing demands for better fuel economy and new strictest emission regulations it's not very easy to achieve. The engine parameters need to be constantly and precisely adjusted according to various conditions such as speed, load, engine temperature, gasoline quality, ambient air temperature, road conditions, etc. That's why today's cars have much more electronics than in early days - there is a large number of various sensors and other electronic devices that help the vehicle computer or ECM to precisely control the engine and transmission operation and monitor emissions.
The vehicle computer system has self-testing capability. When the computer senses that there is a problem with some of the components it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and your car needs to be looked at. To properly diagnose what is wrong, you need to take your car to a mechanic or a dealer. The technician at the dealership or a garage will then hook up the scanner to the car computer and retrieve the stored trouble code(s). Then he (she) will look it up in the service manual provided by a car manufacturer. The service manual contains the list of possible codes (about few hundreds) and describes what each code means and what needs to be tested. The code itself doesn't tell exactly what component is defective - it only indicates where to look, what engine parameter is out of normal range. The technician will have to perform further testing to pinpoint a defective part.

Jan 26, 2010 | 1999 Hyundai Accent

1 Answer

Misplaced user manual for Honda Accorda


that is a check engine light.

Check Engine light is on
The engine computer or PCM/ECM

All modern vehicles have a computer or the ECM (Electronic Control Module) that controls the operation of the vehicle powertrain (the engine and transmission). The main purpose of this is to keep the engine running at top efficiency with the lowest possible emissions. With constantly growing demands for better fuel economy and new strictest emission regulations it's not very easy to achieve. The engine parameters need to be constantly and precisely adjusted according to various conditions such as speed, load, engine temperature, gasoline quality, ambient air temperature, road conditions, etc. That's why today's cars have much more electronics than in early days - there is a large number of various sensors and other electronic devices that help the vehicle computer or ECM to precisely control the engine and transmission operation and monitor emissions.
The vehicle computer system has self-testing capability. When the computer senses that there is a problem with some of the components it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and your car needs to be looked at. To properly diagnose what is wrong, you need to take your car to a mechanic or a dealer. The technician at the dealership or a garage will then hook up the scanner to the car computer and retrieve the stored trouble code(s). Then he (she) will look it up in the service manual provided by a car manufacturer. The service manual contains the list of possible codes (about few hundreds) and describes what each code means and what needs to be tested. The code itself doesn't tell exactly what component is defective - it only indicates where to look, what engine parameter is out of normal range. The technician will have to perform further testing to pinpoint a defective part.


Nov 05, 2009 | 2003 Honda Accord

2 Answers

Check engine light stays on car feels like it wants to turn off


Why my Check Engine/Service Engines Soon light comes on?
The engine computer or PCM/ECM
All modern vehicles have a computer or the ECM (Electronic Control Module) that controls the operation of the vehicle powertrain (the engine and transmission). The main purpose of this is to keep the engine running at top efficiency with the lowest possible emissions. With constantly growing demands for better fuel economy and new strictest emission regulations it's not very easy to achieve. The engine parameters need to be constantly and precisely adjusted according to various conditions such as speed, load, engine temperature, gasoline quality, ambient air temperature, road conditions, etc. That's why today's cars have much more electronics than in early days - there is a large number of various sensors and other electronic devices that help the vehicle computer or ECM to precisely control the engine and transmission operation and monitor emissions.
The vehicle computer system has self-testing capability. When the computer senses that there is a problem with some of the components it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and your car needs to be looked at. To properly diagnose what is wrong, you need to take your car to a mechanic or a dealer. The technician at the dealership or a garage will then hook up the scanner to the car computer and retrieve the stored trouble code(s). Then he (she) will look it up in the service manual provided by a car manufacturer. The service manual contains the list of possible codes (about few hundreds) and describes what each code means and what needs to be tested. The code itself doesn't tell exactly what component is defective - it only indicates where to look, what engine parameter is out of normal range. The technician will have to perform further testing to pinpoint a defective part.

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3 Answers

Dashboard lights


does it light up like a christmas tree? I had a simliar problem last year on my 2000 9.5 aero. I beleive it was the tcs on, tcs off, emergency light, and 2 others, i forget now. After paying the saab dealer $800 to try and diagnose it, finally they came up with a faulty abs switch. Cost to replace was over 3k. I took it to my other mechanic and he found one in a junk yard for half the price. I had it replaced over a year now and it works fine.
Have them check out the ABS switch. I later found simliar info on the web of other saab dealers

Jul 08, 2008 | 1999 Saab 9-5

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