95 F350 auto transmission troubleshooting

k2blazen · Jan 15, 2010

*So the OD light flashes trans goes into <safe mode>
*Hard shifting not really slipping, engine acceleration tranny does not power up.so drained the fluid put new filter and fluid in er observed fluid was burnt but no metal shavings at all.
*Ive seen 95f350 had notorious problems with PCM going out in other diesal forums.
*I also noticed when the tranny started acting up my speedometer gauge went dead at the same time so i was wondering if that could cause the problems or a certain sensor i should replace?
*there is also a sensor on the bottom of trans pan and one of the wires is damaged looks like some tape with 4 wires going into it.
*also ABS sensor is broke would that interfear with trans performance?
* If you have any suggestions or been there done that would like to hear what u think, thanks mike

http://www.makcotransmissionparts.com/picture_library/E40D.pdf

charliesnyder · Jan 15, 2010

Had the same issue with my 97 PSD.

Noticed the speedo stopped working, abs light and OD light was on and it shifted like hell. Held the RPM's way over what it should have. After reaching 35 MPH the speedo would start working and everything would be fine. Did a **** TON of research and found out about the VSS/ABS sensor on top of the rear axle.

One bolt, one connection and 25 bucks later it was working fine again. Picked up the part from schucks..

Totalled · Jan 15, 2010

ABS sensor. It drives the electric speedo and tells the computer when to shift the trans.

zukkev · Jan 15, 2010

Speed sensor on rear diff.....done a ton of 'em for the same issues....Check the rear diff too/ pull the cover and make sure the tone ring for the sensor hasn't come loose!!! (seen that a couple times, causing the sensor to get broken...)

Binder · Jan 15, 2010

Totalled said:
ABS sensor. It drives the electric speedo and tells the computer when to shift the trans.

No.....VSS as stated above.

zukkev · Jan 15, 2010

Binder said:
No.....VSS as stated above.

it does pull double duty if it's 4whl abs....but in 95, RABS was only option IIRC, but it still uses the rear speed sensor for abs function (if the RABS valve is any good!!!:haha

....I'll give him partial credit!:redneck:

charliesnyder · Jan 15, 2010

zukkey what is RABS?

All I know is I had the same issue with my 97.. Was the ABS/Vehicle speed sensor. Same sensor mounted on top of the rear end. Easy cheap fix. Worth a shot to start there..

zukkev · Jan 15, 2010

Rear ABS valve (RABS is commonly used term:

....for rigs with rear abs only....mounted on driver's framerail up by firewall.....

charliesnyder · Jan 15, 2010

zukkev said:
Rear ABS valve (RABS is commonly used term:....for rigs with rear abs only....mounted on driver's framerail up by firewall.....

Awesome thanks man!

k2blazen · Jan 16, 2010

ABS sensor it was

Would not think that would make my trans act up What a relief .:cheer:

"my dumbass learns something every day"

Thanks for ur input everybody Id do a backflip but probably land on my face.:beer:

zukkev · Jan 16, 2010

Glad to hear it is fixed...:awesomework:
Did you sell the truck, or pull it off the market??? (still waiting to hear from a buddy I told him about this truck...)

k2blazen · Jan 16, 2010

zukkev said:
Glad to hear it is fixed...:awesomework:
Did you sell the truck, or pull it off the market??? (still waiting to hear from a buddy I told him about this truck...)

pulled it off the market ,I was not about to put another $2000 to fix trans dumped way to much $ into this beast ,somebody woulda had a good rig for $2000 they shoulda jumped on it .Thanks for the info I know u kept sayin ABS,ABS :awesomework::cheer:

CHOP SHOP · Jan 16, 2010

k2blazen said:
pulled it off the market ,I was not about to put another $2000 to fix trans dumped way to much $ into this beast ,somebody woulda had a good rig for $2000 they shoulda jumped on it .Thanks for the info I know u kept sayin ABS,ABS :awesomework::cheer:

Im sure glad you can still tow your wheeler instead of odie parting it out.

Thank god you can still wheel now, lord knows odie wont run a trail anymore.

zukkev · Jan 16, 2010

k2blazen said:
pulled it off the market ,I was not about to put another $2000 to fix trans dumped way to much $ into this beast ,somebody woulda had a good rig for $2000 they shoulda jumped on it .Thanks for the info I know u kept sayin ABS,ABS :awesomework::cheer:

Actually charliesnyder was the first to mention it, so he should get the cookie:redneck:...but thanks!!!:awesomework: I'll let me buddy know it's off the market...

charliesnyder · Jan 17, 2010

zukkev said:
Actually charliesnyder was the first to mention it, so he should get the cookie:redneck:...but thanks!!!:awesomework: I'll let me buddy know it's off the market...

Was just speaking from my experience.. Thanks for the props zukkey!