[mobeydick]

I have a 01 7.3 Auto 4X4, with 205,000 miles, over the last 30,000 or so miles it has gotten progressively worst at Bucking or Jerking. It does this anywhere from 30 mph to 65 mph. The higher the RPM the less you can feel it! What could be causing this? In the last 2,000 miles I have had the HPOP replaced (o-rings blew out) and a BTS tranny installed. I did not replace these thinking it would solve this problem. Over that same 30,000 miles, what I believe some people call Fuel Crackle has also been happening. Could (Crackle) be causing this? Planning on in tank fuel return mod!! Maybe the CPS, Speed sensor or the TPS!!

Thanks for any help!!

 

[Rodeofox]

My 01 with 130K on it did that and eventually caused the ses to come on. Turned out to be the CPS

 

[mobeydick]

How much should the CPS cost!

 

[kwazyca]

[ QUOTE ]
How much should the CPS cost!

[/ QUOTE ]Other than the occasional E-Bay steal.

This is the cheapest I have found.

Dale

Nice guy.

 

[Rodeofox]

$86 Bucks is a great deal!!! I would get two. that way you can have one in the glovebox for the future breakdowns.

 

[JimTJr]

[ QUOTE ]
The higher the RPM the less you can feel it!

[/ QUOTE ] I would take it in and have a cylinder contribution test done. When I had an injector going bad that is what I had.. I dont know what you are calling BUCKING.. But I had a definate "Shudder" And it was at about the same speeds/rpms your talking about. ALSO when I accelerated it seemed less noticable.
Just a thought. Really I have never heard of the CPS causing A CONSTANT bucking,, it will intermittantly cause a stumble or stall completely from everything I have read on here. Just something to think about.
With over 200k on your truck,,, the odds are possible that your injectors are starting to fail...one by one,,or so.
SORRY /ubbthreads/images/graemlins/phoney.gif Just my opinion from my experience with a bad injector..two times!