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> Rough Acceleration, Idles smooth but accelerates rough
 
dwr53
post Mar 6 2008, 04:21 PM
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1989 245. Idles smoothly but at acceleration acts as if it may stall. Cruises great and accelerates under power ok. Problem much worse when cold. I had a check engine light come on and replaced the cold air sensor. Car ran for a day and would not crank. Replaced the crank sensor and runs well now accept for the above acceleration problem. Any ideas, and why would it be so much worse at colder temp. Thanks
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robert240
post Mar 6 2008, 06:06 PM
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Check for codes, see the LH2.4 and EZ-K sections:
http://www.brickboard.com/FAQ/700-900/EngineOBDCodes.htm
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dr53
post Mar 15 2008, 11:17 AM
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Code reads 2-2-1 and 2-3-1. I see it has something to do with the fuel trim. Any help on where to look for possible corrections. Thanks
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robert240
post Mar 17 2008, 12:00 PM
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The codes suggest the mixture is too lean, maybe because of a clogged fuel filter or an intake manifold gasket leak or broken/split vacuum line ...
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