Question about 1999 Toyota 4Runner

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My engine light comes on and off but it is just the symbol i had a shop look at it and reset it but it came back on nothing is wrong though

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There should be a code returned when an engine check light is on. Yes, you can reset any engine check codes and they'll remain off for a hort period but that doesn't resolve the core problem(s). I would invest about ~$20 in a small OBDII wireless scanner from ebay and try a smartphone app called Torque. With these 'tools' you'll be able to see any error codes and diagnose any recurring problems with your truck's built in diagnostics. I hope this helps. and good luck!

Posted on May 13, 2014

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Did the shop give you a code before they did the reset the check engine light comes on to let you know that something is going or went [ bad ] wrong----the light lets you know that a code [theirs a few 100 of them ] has been tripped and to seek repair ----go to an auto store most offer reading the code for free and the code will be your starting point to solving your problem

Posted on May 13, 2014


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SOURCE: check engine light comes on. nothing wrong, had it

if ck engine light comes on there IS A PROBLEM, it does not come on for no reason trust me i do this for a living.....but to reset disconnect negative battery cable for atleast ten seconds

Posted on Apr 26, 2010

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SOURCE: The check engine light is

Check the owner's manual for instructions on changing the battery. Usually you can reset the computer by disconnecting one lead of the battery for about a minute. However, there are certain automotive audio systems with a removable front panel that become unusable if you do not follow the proper procedure (this is intended to make them worthless to thieves). The owner's manual will advise you on this if you have a factory radio of this type. It will also tell you how to "retrain" the computer after a hard reset.

Some cars have a small lead from the positive battery terminal directly to the engine computer. This has a latching connector in-line a few inches from the battery. Disconnecting this will reset the computer, and is simpler than removing the terminal lug from the battery.

Posted on Jan 09, 2011

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