Every now and then my truck will not down shift into first. I sometimes start in 2nd but if I get where I am going and then restart the truck 5 min later or so it goes into first. I am at a loss here. TV cable been adjusted trans was serviced and new solenoids installed. Just looking for ideas to check here.

 

Sometimes bad speed sensor will cause this. But it usually a problem in the governor circuit.

How many miles? Maybe it's tired....

Dave

 

we adjusted tv cable again. Trans has 30-35k on it. 4-500 miles since service and solenoids.

 

I would put pressure gauges on it at the shop just to rule out anything funny.

But, it still sounds like it's electrical to me.

Dave

 

thanks for the help.

 

I don't think I was much help on that one!

I sure could have used some the last two days though.

LOL

Dave

 

what about the grounds on the frame...isnt that an issue sometimes

 

mine did this with only 50,000 miles on it. the stealership put in a new "transducer" and cleaned the valve body. 500 some odd bucks later tranny was fine. hope this helps.