Throttle Problems

[kurt.brinker]

2002 F250 with 215K, tymar, zoodad, straight 3.5" exhaust with dynomax bullet, diablo 85hp tune

Sometimes i will start the truck and the check engine light comes on. When this happens, the throttle doesn't work at all. I have had instances where the light was off and the throttle didn't work either. I noticed yesterday if i pick up the back of the pedal a little, the check engine light comes on and the throttle quits working. i let it back down and after a few seconds the light goes off and the throttle starts working again.

i don't want to start a seperate thread so here is the other problem.
every morning when i start the truck, it puffs white smoke and chuggs a little rough. it will puff for a few minutes if you let it idle but if you get on the road and floor it, it billows white and black smoke for a few seconds and then all is well. no smoke and it runs great.

[lilredpowerstroke]

I dont know about the throttle but the white smoke is either your glow plugs or glow plug relay are bad.

[clmtng]

Originally Posted by lilredpowerstroke

I dont know about the throttle but the white smoke is either your glow plugs or glow plug relay are bad.

As for the throttle issue...think about changing out the accelerator assy. (gas pedal) That should get you going.

[kurt.brinker]

slapped in a new throttle assembly today and its working GREAT. The last numbers on the part number are CA and the one that was in there was a BA. I did notice the sensor housing is MUCH bigger on the new one and the return spring is internal. I also installed a new cps since the price from ford dropped to 27 bux a pop. I actually replaced it and bought another spare just in case.


The truck has a new glow-plug relay but if its just a glow plug problem then i'm not too too worried.

Thanks for the help!