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very rough running at cold start 200 1986

posted by  rjs on  Wed Jan 29 15:48 CST 2003
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I've had a number of problems with bad idling. Found the Throttle switch set wrong and the Idle air control rotating valve stuck due to dirt.

Got these fixed and it runs Ok now EXCEPT It is very hard to keep running when it starts in the cold morning. It starts with the first touch of the starter and then jumps and bucks, even slight backfiring, and virtually no response to the throttle position.

When it gets warm, in about two minutes, it seems to run fine, both at idle and at fast idle and under power.---- I don't mind waiting the two minutes, but the running is so rough that I am concerned about damage to the engine, as I said, it has a slight backfire sometimes during this warm up period. ----- After it gets slightly warm, I can then shut it down and let it sit for a few minutes, it starts and idles & run fine, or it will start instantly after shut down.

Is my COOLANT TEMP SENSOR bad?

And how in the heck do I get this thing unscrewed??? My hand will barely get under the throttle body to touch the sensor with my fingers!! How the heck do I get a wrench under there? Is there any way to test it without taking it out and doing the "hot water bath treatment as outlined in Bently"?

Thanks for any info that you can give me

bob

Thanks Bob






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