new chip strange shifting - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 10-23-2009, 01:46 PM Thread Starter
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new chip strange shifting

installed tw 5 position chip, the 1-2 shift is good, the 2-3 feels like it shifts 2x
quickly. it drops 2-300rpm and then 1 -2 seconds later it shifts again
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post #2 of 3 Old 10-29-2009, 09:30 PM
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Going through the same problem but even with out a chip installed. I had my system reflashed but still doing the same thing. My cousin was going through the same thing until he bought a new PCM. He said that it fixed it you might want to try that.
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post #3 of 3 Old 10-31-2009, 08:00 PM
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Sounds like what mine was doing then tried different files. Think it's Luke1 and Luke Extreme. Shifts nicer now 2-3 is at 80 kph and to OD at 100 kph. It will downshift too at 90 Kph....I like it..this is with both files...

jrc

'97 Red F250 CC XLT ZF5 3:55s, Dana 60, SD springs all round, 'jectors, IC, 6.0 fan, TW files, VisionX lights and other stuff.

'96 White/Silver F250 SCSB 4X2 (all stock for now)... 4:10's E4OD.

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