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'89 240 barely idling, gas in exhaust 200

posted by  jwalker on  Sat Aug 20 19:20 CST 2016
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last visit: Fri Jun 6 08:39 CST 2014
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Tough one. First, as Phil suggested, I'd try unplugging AMM and see if it idles/runs better without it. Check the condition of the plug connectors/pins while you are there.

ECT is a possibility. No experience with that bugger!

Yes, the FPR might still be bad. Maybe it just isn't leaking fuel... Test the fuel pressure.

How old is your catalytic converter? Is it original? Have you tested it? A bad cat could also cause rich exhaust. Replacing the oxygen sensor wouldn't compensate for a bad cat. Might explain the excessive carbon build-up though!





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New 1 '89 240 barely idling, gas in exhaust [200]
posted by  LoveMy240Wagon  on Thu Aug 18 17:53 CST 2016 >


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