high rpm shifting

[mattpresley]

Do you think the tach is operating as it should? I'm not sure how one could not realize the engine was revving all the time like that. Maybe the tach is a little jumpy?


If it really is waiting that long to shift, it sounds like your modulator valve no longer functions. A Haynes/Chiltons manual should walk you through replacing it.

Modulator valve might be my issue. Money is very tight right now how long should I wait to replace at the maximum? what can happen if this is not corrected. how much $$$$ does this cost?

 

[mattpresley]

Do you think the tach is operating as it should? I'm not sure how one could not realize the engine was revving all the time like that. Maybe the tach is a little jumpy?


If it really is waiting that long to shift, it sounds like your modulator valve no longer functions. A Haynes/Chiltons manual should walk you through replacing it.

also it doesnt rev it cruises right along. I took the truck out around the block and it only does it when accelerating hard. like I would getting on the interstate

 

[Bubba Bob]

Hmmm - That's how it should operate.

Oh, and sratch the modulator valve idea. Someone correct me, but I don't think the newer trucks have the mod valves. IE, shifting is done by the computer.

 

[mattpresley]

Hmmm - That's how it should operate.

Oh, and sratch the modulator valve idea. Someone correct me, but I don't think the newer trucks have the mod valves. IE, shifting is done by the computer.

Thanks very much for your help bubba. I am naturally a panicker when I notice anything.