tunning the shift points on rebuilt e4od

[Dorfy]

Hey everyone I am new to this site and being a powerstroke owner. I purchased my 97 f-250 with a bad tranny and that was all I knew about it. I had my local shop stick in a stock rebuilt tranny and everything worked good except the shift points seem to be all over the place. I asked them about adjusting the shifting but their computer would not read anything on the truck. I was wondering if this was a sign of aftermarket programming/chip? It works fine if I manually shift the tranny, but I was wondering if there was a way to set the shift points.

Thanks in advance for any advice!

[ipz2222]

/All the shift points are computer programed. Shops can't change that unless they have there own reprogramming, few do. "there computer won't read anything on the truck". '97 is OBD II, any reputable shop should be able to read info, data.

[Dorfy]

Thanks for the info. From what I was reading in other posts it looks like I will be needing a chip/programer to help with this issue. When the shop that put my tranny in could not get any codes or info from the truck they told me it must be because the truck had a chip.. As you can tell I'm not knowledgeable at all on chips, programers or scanners so I took their word on it. They also mentioned that my check engine light does not come on when you turn on the key and that was a sign of a chip. However I checked and there is no chip yet and the check engine light does come on briefly when the key is turned on.

[85_305]

The CEL will only come on for a split second; thats normal. is this your first e4od powerstroke? Yes, they shift very funky from the factory. A good chip and a good valve body will fix that up.

[Dorfy]

Yes this is my first e4od powerstroke. I originally rescued the truck from the car crushers and planned to fix it up a bit and turn around and sell it but it works so good I decided to keep it. Other than the funky shifting the truck works great. Hopefully I can get that corrected.

[85_305]

Valve body and GOOD custom tuning. Good job saving it from the crusher though, thats awesome