Driving home last night fine, short drive no way the trans had time to overheat, nothing out of the ordinary.

today, wont upshift from first. I'm thinking electrical, no codes set yet, fluid level fine, basics covered.

Any comon problem with this, a wire that breaks, a conector prone to issues?

I did check the kickdown cable, seems to be proper.

thanks for your help.

Oh, 99 slt 5.9 pt4wd

 

well, couldn't sleep so I was out futzing with the truck. unplugged & plugged all the conectors back in, replaced the fuse, wasn't bad, swapped out the trans relay, had extras laying around.

It's fine now, pulled the neg & cleared the memory as well but had done that earlyer also. though I am now throwing a code, I'll figgure that out tomorrow & post an update.

 

Sounds like a relay but that issue in strange. Update please!

 

pulled codes, found an unrelated emiss code. I'm thinking that in the couple of weeks I have had the D I have done nothing really but short drives. though it is shifting fine still I am going to transfuse the fluid & change the filter, figure on doing the band adjust while there. If all stays well I'll change the fluid and filter a few more times over the next few months. I'll dig out the old relay & test it but right now it seems the only thing I really made different. May try swapping that one back in, just to see what it does if anything.

Right now I have to get back to work.

BTW this tranny fluid is freaking outrageously priced!! just had to bitch.

 

You can pick it up by the Gal a little cheaper at the dealer. Also I found Valvoline Synthetic ATF+4 for about $4.50 bucks a quart. You can try Wal-mart!

 

The parts guy at the Mopar counter told me to get the gallon too. IHMO, I'd stick with Mopar ATF+4.

 

+1

 

Update: the trans issue came back, code run with a MODIS showed a output speed sensor error, we put her on the lift gave it a check with a scope & found the sensor dropping out.

Part just arrived today, installed & verified fixed.

As an aditional note; Backed up a steep driveway to swap the sensor & lost maybe a couple drops of trans fluid.

 

yea you dont lose much trans fluid changing that sensor not even enough to notice it when i did it on my old dak

 

So you replaced the Output Speed Sensor on the trans (drivers side)?