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Modistran was correct. Problem turned out to be a broken intermediate band. I purchased a rebuilt tranny from Roadmaster and its working OK.

Thoughts. Chemicals think more in energy per lb terms and not necessarily in energy per gallon terms. I think the original question asked might be answered by thinking about increased future use of higher octane corn alcohol blend in some of our midwest farm states. This is maybe a...

Bluegrass1: (in Engine & Fuel Enginnering Forum) Great response ! I now much better understand the mechanism of the control and diagnostic system and what is giving me the delayed 1-2 upshift and also then setting off the 646 error code in my 2wd 95 Explorer 4R55E transmission. Re if its...

Bluegrass1: (in Engine & Fuel Enginnering Forum) Great response ! I now much better understand this particuliar control mechanism and what is actually setting off the 646 error code in my 4R55E transmission. I note my vehicles computer is also set up to issue an error code 622 if the SS2...

Hi: I have a 95 Ford Explorer, 4.0L, 2wd, with 4R55E tranny, with non reprogramable EEC-IV computer part number F5TF-12A650-ARC having calibration code 5-58B-R10. I am getting a delayed tranny shift from 1st to 2nd and no engine braking when in manual 2nd. 3/4 Od light flashes and error code...

Hi: I have a 95 Ford Explorer, 4.0L, 2wd, with 4R55E tranny, with non reprogramable EEC-IV computer part number F5TF-12A650-ARC having calibration code 5-58B-R10. I am getting a delayed tranny shift from 1st to 2nd and no engine braking when in manual 2nd. 3/4 Od light flashes and error code...