Question about Toyota Cars & Trucks
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Posted on Jan 02, 2017
SOURCE: 1987 s10 pickup Service engine
Slow down, don't start tearing down the engine just yet. Error 74 is: P0074 Ambient Air Temperature Sensor Circuit Intermittent.
Posted on Nov 07, 2008
Testimonial: "Thank you very much I now can proceed with confidence."
Could be a throttle position sensor going bad or a loose or leaking vacumm line or loose or worn wiring harness. You had mentioned the engine starts heating up. Do you mean overheating or operating above normal temperature? Sounds like a vacumm issue with the fluctuating idle. Check for worn vacumm lines and check to see if the vacumm is functioning. Sometimes a simple vacumm line with a loose connection or a small hole in it can affect your idle. Old lines are easily replaceable and an inexpensive place to start, then try your egr valve, pcv valve, brake booster vacumm line, oxygen sensor could be worn and affecting the mapping of fuel and air on the computer. Usually the check engine light will come on in this case.
Posted on Apr 18, 2009
check air filter for dirty , how many miles or kms have your car? , maybe need to replace spark plugs, try to reset the ecu for a momentany malfunction, remove the negative battery terminal few minutes and reconnect,start engine and drive, check if lights goes off , please write me
Posted on Jul 05, 2009
You should be able to find a fuse panel diagram in the back of any repair manual(Haynes) which you can get at any auto parts store. The fuse panel in the glove box is for your fan and air conditioning. The other fuse panels are general. Your truck should be a 22r carborated motor unless altered.
Posted on Sep 21, 2009
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