no overdrive

SmokeN 12 ValvE

SmokeN 12 ValvE

Diesel Enthusiast
Joined
Nov 4, 2007
Messages
808
Just installed a transmission. Now the "trans temp" light is on the "o/d off" light is on and does not shift into o/d. I tried pushing the o/d button but nothing, and there is no codes. any ideas?
 
Marianne told me the resistor should fix the problem, as soon as we get a break in the rain I will go try it.
 
I don't see the resistor fixing the temp and the O/D light.
 
I am saying the temp is on because you have a wiring issue. Get a snap on scanner and plug into it. You should be able to read everything from the PCM. Do you have the jumper in the transmission relay? Does the truck shift 1,2,3? Do you have lockup?
 
zstroken said:
I am saying the temp is on because you have a wiring issue. Get a snap on scanner and plug into it. You should be able to read everything from the PCM. Do you have the jumper in the transmission relay? Does the truck shift 1,2,3? Do you have lockup?
Click to expand...

No jumper relay, Shifts 1,2,3, when I come to a stop it stays in 3rd
 
Try a VBA. If it starts in 3rd your going to limp. I am betting your exceeding 5 volts on the govenor pressure sensor. If you cycle power the truck starts in first again correct? Contact Haisleys and get the VBA. We had a truck and the resistor worked sometimes. Remember govenor pressure goes up as you increase speed. You can call Goerend too and get a VBA(valve body assistant)
 
There was a guy on another forum who had the same exact problem

SUPRHLR said:
my truck is a 99 the valve body is a HTS 47RE. I believe it was a 00 or 01,
very slight differences but I think there was different voltages and that was the problem. Had the same exact symptoms as you, hooked up a scan tool and it said trans temp was 325 degrees thats why it would not shift OD
Click to expand...

So HTS is sending me the electronics I need, hopefully that will fix the problem. I can't wait to get to a dyno.
 
here is the sensor that came on the valve body
IMG_0868.jpg

here is the sensor that HTS sent me.
IMG_0870.jpg


The second one is also the same one that is on the stock valve body. The harness is the same except the plug for that sensor. ran out of daylight so I will fill it back up and drive it tomorrow.
 
I got it back going Saturday morning everything was fine. Saturday-Wednesday no problem. I go out today to go to work start my truck and go back inside, 5-10 minutes later I come get in put it in reverse nothing. After playing with it for a little bit I decide to cut the truck off and try to start in while in gear. It does not start in R, D, 2, 1, and only starts in P and N like it should. I start it back up put it in reverse (you can feel it catch just a little) nothing. If I give it a lot of throttle (2500+rpm) it will start to move. Any idea's?
 
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