fluctuating RPMS while driving

[Broncogirl95]

I have a 95 ford bronco 4x4 with a 5.0. It just started acting up and at some speeds my RPMS fluctuate. Ive replaced the TPS and IAC valve before. i dont think its my tps because I dont have hard shifting, and I also dont think its my IAC valve because it doesnt do it at an idle. Please help, its driving me crazy everytime I drive the truck.

 

[miesk5]

yo,

Try a Self Test for Diagnostic Trouble Codes (DTC)s by my pal, BroncoJoe19

@ http://broncozone.com/topic/14269-code-reader/page__pid__74587__mode__threaded

The engine temperature must be greater than 50° F for the Key On Engine Off (KOEO) Self-Test and greater than 180° F for the Key On Engine Running (KOER) Self-Test.

Run it around to heat the engine up and shift thru all gears incl Reverse. Then turn off all accessories/lights, etc.

Make sure A/C is off and transmission is in Park (automatic) or in Neutral for a Manual & release clutch.

Do Key On Engine Off (KOEO) portion first.

Look Codes up in my broncolinks.com site using the new Search function.

And Post em here according to:

KOEO

&

KOER