1985 Toyota 4Runner check engine

BOURQUE

MEMBER
1985 TOYOTA 4RUNNER
4 CYL
4WD
MANUAL
300,000 MILES

My son went mudding over the weekend, ever since then the check engine light comes on. This occurs mainly at higher speeds, when I let up on the gas it goes out but comes on again later. It is running great, uses no oil for this many miles.

Tuesday, January 22nd, 2008 AT 7:53 AM

3 Replies

MIKE H R

MECHANIC
3,094 POSTS

Your son may have gotten the wires really wet. Try disconnecting the battery, leave it off for a while then reconnect it. The computer might reset itself, if not have it scanned to find out what the problem is.

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Tuesday, January 22nd, 2008 AT 10:25 AM

CO4X4NUT

MEMBER
1 POST

Well, my brother has an 86 Hi-Lux and I have an 86 4Runner. His check engine light has been on for about 6 years and mine for about 4. Both trucks run fine. They are both subject to heavy offroad use. Sometimes the check engine lights go off for a few days, but they keep coming back on. We have tried numerous checks, but neither of us have any computer diagnostic problems. Neither truck uses or leaks oil, so I don't know what to tell you. I guess if I owned a chevy or a ford and the check engine light came on, I would be scared, but since I have lived with it for 4 years now, I am not worried as I have owned toyotas for 22 years and only had to call a tow truck once.

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Friday, February 22nd, 2008 AT 10:57 PM

MIKE H R

MECHANIC
3,094 POSTS

Sometimes the sensors can make the engine light go on. Most of the time it is something minor. But sometimes it could be a major problem. If you hear any weird noises or knocking it should be checked. If you have had it happening for 4 years then it has to be a minor thing

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Friday, February 29th, 2008 AT 2:35 PM