Question about 1984 Chevrolet Cavalier Type 10

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My 1984 chevy cavalier cs 2.0L has a tough time starting when engine is cool, idles rough, and attempts to die when I stop at traffic lights. After it is warmed up it's much better, but still doesn't run as smooth and steady or as strong as it should. I had a bad oil pressure switch, and fixed it with a simple plug to stop the leak so now that connector is currently unhooked. Would this have anything to do with my problem? I have also replaced virtually every vacuum line and performed a complete tune-up as well as checking an array of other sensors which are all still good.

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 1989 chevy 350 automatic, white smoke

white smoke is antifreeze try checking the compression

Posted on Nov 08, 2008

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SOURCE: 95 GMC Jimmy 4.3l W vin rough idle

My problem was solved when I repaired my 4 wd activation dash switch. The switch was contacting on 2WD & 4HI at the same time. The front differential activation is vacuum activated possibly creating a tug of war that didn't actually engage it but drained off vacuum from the engine? A theory at best but stumbbled across it because I knew the switch wasn't working properly I repaired it and low and behold rough idle disappeared and all is good for 3 weeks running.

Posted on Dec 10, 2008

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SOURCE: 1987 chevy s10 2.5l tbi will not start. changed

That eliminates the crankshaft and camshaft position sensors. Have you checked the fuel injector itself for an open winding or stuck valve plunger? There should not be a steady 12 volts to the injector--if good injector, it would be spraying fuel steadily into the throttle body. But at least the engine should try to run if poorly. Take the injector out, dry it off with air, and intermittently apply 12 volts to one terminal while grounding the other. You should hear a click from inside every time you touch 12 volts. If not, replace it. If it does, it may be plugged with debris. Try blowing through it in reverse with compressed air.

Posted on Jul 17, 2009

hawkwindbear
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SOURCE: 1987 chevy engine problem

you have to reset base idle see manual at library for procedure

Posted on Jul 19, 2009

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SOURCE: 1987 Chevrolet S-10 Pickup1987 chevy s10 2.5l tbi

Check the trottle body postioning sensor...

Posted on Jul 19, 2009

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