I have a 96' F-250 which I purchased about a month ago. Second Ford truck I have owned, first was a 1970 F-100 which was my first car in 1980.


Anyway, love the truck, has the 5.8 motor with automatic and 4wd. Truck starts easily everyday except when its around 5 degrees or colder. Then it won't start unless I give it a little throttle. Then I have to hold it for a few moments until high idle takes over. If I don't hold throttle it will idle very slowly then die. Runs very smooth, no rough idle or hesitation at any speed. I have searched forums and found several issues with throttle position sensors, but all seem to say it causes rough idle or low on power. Couldn't find anything specific to my symptoms.


Suggestions welcome other than moving to Florida. Thx

 

Could be sticky/carboned IAC valve OR ECT or IAT sensor's.

I would do the easiest one 1st, that being the IAC. Remove it, and clean the inside well with brake cleaner or electronic cleaner and Q-tip. Be sure not to get any in the solenoid part.

The other option is to check for codes. Get engine to operating temp and then perform KOEO test. After that, post your results.

Third option, blindly throw parts at it. No seriously, don't.

Give the IAC a good cleaning, and if possible, pull codes and post them. Its best if you don't remove the battery cables so you can retrieve any stored codes now and post them!!! They can be beneful to you, us, and your wallet!