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Mercury Forum: 05 Montego 2wd harsh shifting when warm intermittently
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Old 07-22-2014, 10:43 AM
KEONI967 KEONI967 is offline
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Default 05 Montego 2wd harsh shifting when warm intermittently

sometimes the car shifts really bad and feels like the engine is going to fall out of the car. Then I also get the cel that comes on intermittently for running too lean in both banks. Please Let me know if you have any thoughts that could help me. Thank you
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Old 07-29-2014, 03:53 PM
hixx hixx is offline
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Lean on both banks generally means you have a vacuum leak,dirty injectors (Techron works wonders) or a dirty M.A.F sensor. You should have the codes read for the transmission issues. I doubt Autozone, etc can read trans codes so a trip to a transmission shop may be in order. The most common problem is the torque converter.
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Old 03-31-2015, 09:19 PM
frankparisi frankparisi is offline
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I just did a Powerpurge at AAMCO. 70K Miles. Tranny is like new again.

I also put a 20 gallon bottle of Techron into one gallon of gas. It made a noticeable difference.
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