05 F350 idling - YouTube

Lately when I go to fire up my truck, a cold start only, no matter the temp outside. It will idle like this at times, but once I put it in reverse or drive and take off it acts normal and goes down the road fine, for the most part. Now I know the computer has to do what it can to keep the motor running until it warms up but this seems excessive. What should I do to maybe correct this if you guys think its not normal. I should also add, I'm touching the gas pedal at all in the video.. and at times when I'm going down the road just holding the pedal still, you can kinda feel like I'm pushing on the gas then letting off, pushing on, then letting off. its very light but I can tell its there. Sometimes I notice it in the tach and sometimes it doesn't really show. Do you guys think this is the Throttle position sensor? My truck being an 05 does it have a idle air control valve thing on the back of the throttle body?

Well...lol I bought a new TPS today, put it on and the thing wouldn't start..I thought that was weird. So I thought well let me debunk the the sensor I just put on and throw the old one back on. Once I got the old one back on, it fired right up and idle'ed perfect and the truck has sat for over a day. (I wanted the truck to really sit so it would be a cold start to find out if the new TPS would fix my problem.) So once I put the old sensor back on and it was running fine it triggered a check engine light which I then drove the truck over to my buddy who works at a parts store and we read the code(s) and it was something called a idle actuator or something like that. I can't remember what it was called right now off hand but we went and looked up the part and couldn't find it for my model year of truck. So we cleared the codes I left my old TPS on and returned the other one I bought to save some right now and I'm just gonna drive it for the time being until it throws another code..I think I'm gonna invest in a OBD II reader because there are so many codes listed in my Haynes manual that it could throw over time..

Anyway does anyone know what could of been wrong with it?

truck is 05 F350 V10, auto for specs

*edit* oh and the light you see on the dash is a ABS light..I need to replace my wheel speed sensors..

 

I have one that does the same thing when cold...warm its OK its a 2004 I had another 2004 that was stolen that did the same thing. Takes time to get used to a FORD.

 

something lol Its been running fine with the couple short trips I have taken it on this evening..

 

'04 and '05 are different. One's 2V and the latter is 3V. 2V has IAC, but 3V don't.

Could be your pedal assembly?

You can try cleaning your throttle body.

 

Try disconnecting your battery. Then turn on your lights and let it sit for 30 minutes. Turn your lights off, connect the battery back up. Turn the A/C off, then start the truck. Let it sit and idle for 5 minutes or so. Do not touch the throttle The PCM will relearn how to idle.

 

Try what redford said, the fly-by-wire throttle system can get confused by cleaning the MAF for example. Let it relearn.

There is a calibration procedure, I forget where it is, but look around in the 5.4 and the V10 forums, you might be able to find it.