my truck as been jerking while driving reving up and then jerking and i was just told recently that it was my idle air control has gone bad what do yall think

 

Sounds like a TPS IMO. Do you have a CEL ? Fill your info in (top right corner). How in the hell are we suppose to know what your driving or referring to ?

 

What engine ? What year? How many miles? Any history? What are your mods? Need more info.....

 

What year?
what motor?
Any codes?
What mods?

Need a little more to go on!

 

Looks like we're all on the same page!

 

have you at the very least cleaned out the throttlebody lately??? carbon buildup will start to mess with all the ports inside it including the IAC.

 

my 1994 f150 302 with 190000 miles has been jerking while driving it and i was told recently its my idle air control valve ive had the transmission rebuilt and replaced the egr valve what do yall think

 

Revving up and jerking? That sounds like a tranny problem.

 

I believe the IAC would only effect the running at closed throttle. If your issue is at crusing speed then I doubt it is the IAC.

I think I would check plugs/wires, fuel pressure/filter and such. Genreal tune up wouldn't hurt either.

 

If you can rule out the transmission. then go with the coil. Change the fuel filter anyway.

 

"Revving"
"Jerking"

I think you have two different problems. Revving is related to A/F's and trans tables. Could be cables/linkage. Air/Fuel, -so a leak or something allowing unmetered air in the mix. - Like a vacuum line. papajohn posted another possibility.

Jerking could be fuel related, -as in not enough. Check pressures and regulator to rule that out. Other than that, look to the ignition.

Do you know how to To Run a "Self-Test" ? Do you know where your STI is ? Don’t worry if the Check Engine Light is not on, the computer will store lesser important codes without flashing lights in your face. First you need to find the self-test plugs to read codes from the EEC.

Your self-test plugs are located along the driver�s side fender behind the air filter box.