Surging idol....
So I recently bought a 1990 Toyota 4x4 ext cab. its got the 3.0L in it and some times when i start it up the idol will jump up and down... but when i drive it it stops... or sometimes while driving when i push in the clutch or put it in neutral it starts to do it again but not all the time.. does it sound like a vacuum leak or something to do with my fuel system
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Sounds like your idle is set too high. Bring down the idle a little bit and see if it helps.
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Is your coolant full and at the proper anti-freeze/water ratio?
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I have found there are a fe things that can cause the "surging" idle.
1) low coolant 2) vacuum leaks 3) tps out of adjustment 4) IAC valve gummed up/not working 5) afm out of spec 6) low compression and so on.... start checking things out. |
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