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Check Engine light came on while Test driving a used car - should I buy the car ?

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  • dashej Jul 29, 2008

    Thanks a lot. I liked the swift ( and decisive) response



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Toyota engine light will come on if the gas cap is not properly closed get it checked at different place it should not be much toyota is a real good car

Posted on Jul 28, 2008


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Suddenly the remote key didnt work and message on the dash board when i turn the car on "check system"

Check fuses first. Since it say which system pull and check them all. When you pull them, this takes care of corrosion problem. A test light doesn't.

Jul 27, 2015 | Suzuki Grand Vitara Cars & Trucks


Buy and use a test light

A test light is invaluable to check for battery power, grounds, fuses, bulbs ect. Buy a good one and learn how to use it. For fuses, use the tip and touch it on each end, if both ends have power you now know that ONE, the fuse has power to it and TWO, the fuse is good. You can now check fuses without wasting time pulling and looking. Use a test light to check for grounds. put the wire clip to the positive post of the battery and touch the body or engine and check for light, light is good. Now to check if you negative cable (ground) is good, clip your wire to the negative terminal and touch the engine, any light is bad, check it while trying to start the engine. (a friend can help) if the light comes on, you have a bad ground. You can also use it to check your trailer plug, wiring and grounds.

on Jan 23, 2010 | Ford F Cars & Trucks

1 Answer

Fuel injectors not working

Check voltage at the injectors with key on. Voltage should always be available to injectors with key on. When the ecu grounds the injector circuit internally, for a split second, the injector will pulse, spraying fuel. You can buy a "noid" light to test injector circuit, one that fits your injector connector. To test, you crank the engine over, noid light should be blinking.
Or, use a test light and check injector drive circuit. With key on, one injector terminal should have constant battery voltage-test light should be lit bright. Now move ground clip of test light to the POSITIVE battery post, and probe the other injector terminal, the one that did not light the test light. Have someone crank the engine-if injector circuit is working, the test light will be blinking, indicating the ecu is grounding the injector circuit.
If no voltage to injectors, the drive circuit and wiring needs checked. If no ground signal, the wiring and the ecu needs checked.

Jul 07, 2013 | Toyota Cars & Trucks

1 Answer

Check engine light on

in fact, in truth and in the operators guide clear as day
so why ask?
when the lamp is off scanning it can give you NOTHING
the lamp comes on at failure, so not scanning then means
you missed the BOAT, it sailed away gone.
the engine is MISFIRING ,say DTC code P0300
so then you see that and ask why
well ever get a full tuneup in last decade.
no , bingo, no car runs forever lacking same'
not one, not ever, for 100 + years.

buy a scan tool land learn to use it
go to the shop when CEL glows driving. win.
other wise, get a tuneup'

Mar 30, 2017 | 2007 Suzuki Reno Hatchback

1 Answer

Hey guys looking at buying an suburu forester 05-06 xt but when i took it for a test drive the engine light was on the owner said its on because the cruise control doesn't work is this true and how much...

This is a guess............. A nonfunctioning cruise control probably would not cause the check engine light to come on , however what ever is causing the check engine light to come on could be stoping the cruise control from working. Is the car a good deal ? Check engine light could be just about anything , even a loose gas cap. What you need to do is use the known problems to get the price down a bit , and then take the vehicle to a mechanic to scan for error codes. The codes tell him which part to replace. More often then not , the repairs are not too expensive.

Jan 28, 2011 | 2001 Subaru Forester

1 Answer

Hi, I just bought a 2001 MB ML430 with 107k miles. I test drove it and it was smooth. Knowing these cars can drive 300k miles and it had no check engine lights and the price was low (it had serious paint...

Check the fuse for "check engine" also might pay to check all globes and fuses, air bag etc at least when you do fix the problems you will be driving a nice Benz.

Oct 03, 2009 | 2001 Mercedes-Benz M-Class

2 Answers

Looking to buy a '95 toyota 4 runner. when test

Yes, Bill you are wise to be worried. It may be a simple fix and it may cost over $1,000 to repair. Walk away from this vehicle. There are plenty more out there without this type problem.

Aug 26, 2009 | 1995 Toyota 4Runner

1 Answer

Mitsubishi Outlander 2003 Service Engine Soon

You'll need to know why the service engine light comes on, they can check this by using a OBD II diagnostic tool to find the trouble code stored in the pcm, ask them to run a check on it, or you can take it to a mechanic before you buy it to have them check over the vehicle for any minor or major problems.

Mar 26, 2009 | 2003 Mitsubishi Outlander

2 Answers

Check engine light stays on while driving

Go to Schuck's/Kragen/Chief's/Auto Zone and have the codes read in your vehicle. It is a free service.

Mar 11, 2009 | 1999 Kia Sephia

4 Answers

Buying a toyota camry

You better buy Subaru B4, i heard that Toyota have a lot of problems, if you want high quality car buy Subaru B4

Jul 07, 2008 | 1998 Toyota Camry

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