<TABLE width="100%" border=0><TBODY><TR><TD vAlign=top>I posted this in the tranny forum & just pasted it here too.

I sure could use some help on this one. I'll tell you what the problem is & then fill you in on what all has been done to this truck.

The Truck is a 1995 F150 4X4 with the 4R70W transmission.

I just had the trans rebuilt and got it put back in the truck this week.

The problem: 1) You have to manually shift through the gears
2) It will not take overdrive
3) It loses power while in drive (fluid pressure)
4) The O/D light on the gear shifter is flashing

Here is a list of what all was done to the transmission:

Master overhaul kit w/ steels (High Energy)
New front pump
New torque converter (stock)
Reman valve body w/ new solenoids
Fairbanks Heavy Duty shift kit
Performance main drive band
PR208 Pressure Riser Resistor

Now....here are some of the tricky parts to this story:

1 year ago, I did a complete overhaul on the engine. I had a 96 Ford Explorer with the 302 that I used. I did this for performance reasons. I now have GT40 upper & lower intake w/ heads, cam, & exhaust. I had to use the cruise control cable off the Explorer with the trucks cruise control module.

Everything was fine until the tranny went out. Then the rebuild.

The trans was shot in the truck, so we used the trans out of the Explorer. It was a 4R70w two wheel drive. We mainly just needed the housing. After the rebuild, the only thing that I noticed that was different was the gear shift lever on the side of the transmission. After a minor modification, we got that problem solved and it will now shift into gear properly.

After driving the truck, it is shifting way too hard from 1st to 2nd. After it goes into drive, it will pull properly for about 3 seconds, then it loses power & will not take overdrive which I think is because it is not building up enough fluid pressure. The flashing light on the gear shifter leads me to believe it is electrical or sensor related.
<TABLE width="100%" border=0><TBODY><TR><TD vAlign=top>I do realize that I am going to have to pull a code on it, however, I was hoping by some small chance that someone else has experienced the same thing and may have an idea as to what to do.

I work in the automotive industry and have some pretty good contacts. I had a well respected trans builder do this for me on the side (to save a few bucks). As for the parts, I did some research before jumping into it. A co-worker did the same overhaul on his 97 F-150 4X4, and after driving his truck, this is what prompted me to go with the shift kit. As for the front pump, valve body, and torque converter, I was sure the pump was burnt up, not to mention the fluid was burnt really bad. I did not want to take any chances on anything being used after putting the tranny back in. The reason I had to use the tranny out of the Explorer was because a bearing had spun in the casing on the truck tranny.

<TABLE width="100%" border=0><TBODY><TR><TD vAlign=top>I do realize that I am going to have to pull a code on it, however, I was hoping by some small chance that someone else has experienced the same thing and may have an idea as to what to do.

I work in the automotive industry and have some pretty good contacts. I had a well respected trans builder do this for me on the side (to save a few bucks). As for the parts, I did some research before jumping into it. A co-worker did the same overhaul on his 97 F-150 4X4, and after driving his truck, this is what prompted me to go with the shift kit. As for the front pump, valve body, and torque converter, I was sure the pump was burnt up, not to mention the fluid was burnt really bad. I did not want to take any chances on anything being used after putting the tranny back in. The reason I had to use the tranny out of the Explorer was because a bearing had spun in the casing on the truck tranny.

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</TD></TR></TBODY></TABLE>Anybody got an idea?


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the od light is flashing cuz something is wrong elecrically . the trans will not shift properly due to the trans malfuction. trans ecu is comanding full fluid line pressure so as to not damage trans.there are many things that can cause this. the list is endless. you need to hook up to a scanner or pull codes to find problem.