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Introduction... and questions regarding rough/lumpy idle 200 1993

posted by  OzzieH on  Tue Oct 22 11:43 CST 2013
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last visit: Fri Oct 24 12:16 CST 2014
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Hi Mike, I am also working on a newly acquired 1990 240, wife's car. We have had it about 1.5 yrs now. I killed the AMM by cleaning it, so I vowed not to ever clean the AMM on this car. I have successfully cleaned other makes' AMMs with improvement in performance.
I remember reading to think about the in-tank fuel pump when the idle is rough and the fuel amount in the tank is getting low. I would not think a dirty sock filter on the in-tank fuel pump could cause a problem but I don't know.
I second the trial of a different AMM but I would try a used part first.
You are ahead of me on the maintenance/repair. I have heard of a smoke test to look for vacuum leaks but don't have knowledge of how to do.
Please post your solution if you figure this out.






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New Introduction... and questions regarding rough/lumpy idle [200][1993]
posted by  mike.volvo.240  on Tue Oct 22 07:22 CST 2013 >


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