Join Date: Jan 2009
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POWERSTROKE or NOT overdrive problem
1997 F350 4x4 turbo diesel
My engine is an International 7.3 turbo -DI Navistar
Navistar 7.3L OHV DI TC V8 DSL
Production date 10/1996
Please tell me if this a POWERSTROKE ??
If so ... heres my problem -
Found a pinhole in the return transmission line that runs from the passenger side of the tranny to the bottom of the main radiator. Replaced the tranny line, filled trans fluid.Start engine and the overdrive light on the shift lever blinks steadily.
The truck shifts harder than normal from 1st to 2nd.
The speedometer works fine.
With the O/D light blinking , The overdrive button DOES work and DOES shift the truck in and out of overdrive at high speeds.
I plugged a basic code reader into the plug below the ashtray inside the cab and got no codes.
One kind member here suggested I swap the #1 square relay ( under the hood) with the #3 relay because he had the same symptoms and his #1 relay was bad. My relays are all good as are all my fuses in the cab and under the hood.
Autozone tells me they can not read transmission codes.
I have scoured this site to find any help , and was going to do a self test with a test light to get trouble codes but cannot find the plug to hook the jumpers to.
Before I get financially assalted at the FORD dealer, I am hoping to narrow this problem down with the help from all you highly educated Ford techs here.
Thanks in advance guys.