cold start was really rough

[5.0Flareside]

well this morning i went out to start my truck up at 11. it was bout 20* maybe a lil colder. well when i started it up it was like super rough. it felt like it was missing like on half the cylinders. so i shut it off after bout 5 seconds was hoping it would smooth out. well then i started it up again and it was rough for just a second and then smoothed out. any ideas? my IAC was giving me trouble a few months back and i cleaned it up and it went away. might it be the IAC again? just need to go get a new one probably?

 

[john112deere]

Did you try just cracking the throttle a tiny bit when it was running poorly?

If it's the IAC, that should smooth it right out...

*I had good luck cleaning the IAC in my truck, but I know a lot of people find they don't stay clean long.

 

[5.0Flareside]

yeah. i did pop the throttle just slightly but didnt help very much. and when i cleaned the IAC its still not quite as good as a new one. ill probably get a new one this afternoon.

 

[flareside_thunder]

Definitely the IAC......

 

[nobodyspecial]

Cold starts are no fun. The mounty was mad at me early this morning for not plugging it in. -25 when I started it up. I felt bad.

 

[Blue Goose]

Cold starts are no fun. The mounty was mad at me early this morning for not plugging it in. -25 when I started it up. I felt bad.

Mad at you.... Very descriptive though...

 

[95F350XL]

Lol could just be the cold. If you gave it gas and it was still rough then that has nothing to do with IAC.

 

[5.0Flareside]

Lol could just be the cold. If you gave it gas and it was still rough then that has nothing to do with IAC.

i didnt do but a slight touch of the gas peddle. but the second time i had to give it a lil bit more gas and it smoothed out. so im fairly certain its the IAC

 

[KdPate]

Started my truck up after it sitting for two weeks. Acted a tad rough but after burping the gas it cleared up and idled good. Mightg et to use the 4WD on Thursday according to the weather.....

 

[Alvin in AZ]

Cool thread.

Had to look this stuff up, so figured I might as well add it to the thread...
IAC = Idle Air Control (new term)
ISC = Idle Speed Control (old term)
BPA = Bypass Air

Alvin in AZ