mild jerking

[DPalmquist]

Hello, Help what do you guys think I need to replace? while in cruise w/cruise control on pretty much any speed, on level fine when starting to go down hill or up throttle acts like its jerking until it goes more up hill or down hill then smooths out, like normal, Throttle position sensor or ? If so where's it located? Thanks much in advance Odometer 76,500 miles

 

[steved]

The most common problems that cause that symptom are those that control the rail pressure... typically the FCA, the rail pressure relief valve, and the injectors (or a combination of those).

Mine was caused by leaking/worn injectors...

 

[EArp]

Mine has done it since the day I drove it off the lot. In my case, other than it being a little annoying the truck runs like a champ, so i'm not too worried about it. If you do a search, you'll probably see alot of other members experience the same issue. Hope this helps!

 

[foolkiller]

Mine has done it since the day I drove it off the lot. In my case, other than it being a little annoying the truck runs like a champ, so i'm not too worried about it. If you do a search, you'll probably see alot of other members experience the same issue. Hope this helps!

what he said... ... 07 5. 9 4x4 Auto

 

[steved]

Just because it has done it since new, doesn't make it normal or acceptable.

 

[Regcabguy]

Just because it has done it since new, doesn't make it normal or acceptable.

Excellent point. Knock on wood,mine's idled,accelerated,decellerated normally w/Smarty or without.

 

[DHuffman]

Mine has done this since new as well; it is barely noticeable.