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Hard Starting and engine stumble until .... 200 1993

posted by  J.R. on  Tue Feb 10 14:45 CST 2009
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last visit: Tue Feb 1 20:22 CST 2011
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Already did a search and saw a variety of answers. Need some advice.

Hard Starting when cold soaked (it's been between low 20F and 32F here in the morning. Cranks a long time, then it tries to catch. Crank again for a long time and then it fires. Rough at idle and some stumbling until the engine temp needle starts to move.

I'm 99.99999% sure there is no cold start injector and based on some searched posts, the computer keeps the injectors open longer during cold start. So the possibilities so far are:

- IAC sticky (will pull and check freedom of movement and clean if necessary)
- Temp sensor bad (will check resistance at the sensor using the numbers from Bentley's manual)
- Wiring from temp sensor to computer bad (same test as above)

Any other thoughts on items I should be checking?





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