cold starting issue
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cold starting issue
i have a 1999 /5.4 liter engin aprox 193,000 mi on it I have a problem starting it in the cold. I have no fast idle and my lights dim because idling issues. I believe i my IAC should i replace it or just clean it. I'm also looking for a set of running boards for a super cab cheap can anyone help????
Fleet Mechanic
Joined: Aug 2008
Posts: 1,446
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From: NE Iowa JD Country
i have a 1999 /5.4 liter engin aprox 193,000 mi on it I have a problem starting it in the cold. I have no fast idle and my lights dim because idling issues. I believe i my IAC should i replace it or just clean it. I'm also looking for a set of running boards for a super cab cheap can anyone help????
the other thing (if you haven't done so)...is to remove the entire throttle body housing off the upper intake. Reason being is to clean out the 2 interior ports, they tend to get carboned up pretty good affecting runnability. cleaning the throttle body butterfly too will be a plus too...regular carb cleaner works well here.
When was the last time the PCV was changed...now is a good time to do that as well....note, with throttle body housing off....look at the rubber elbow over on the firewall side for the PCV ( known area for vacuum leaks)
lastly get some MAF sensor cleaner and clean it (the MAF sensor) as well.
The above shouldn't take too much time, 2-3hrs being pretty leisurely about it.
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i want to thank enriched&beyound for the great help with this issue it saved me alot of money even though i replaced the IAC and cleaned the throttle body. The truck runs great. Now all i need to fix is the four wheel drive i think i'm going to take some where to fix this issue i think its out of my league.thank you again. !!!!!!!
Fleet Mechanic
Joined: Aug 2008
Posts: 1,446
Likes: 9
From: NE Iowa JD Country
i want to thank enriched&beyound for the great help with this issue it saved me alot of money even though i replaced the IAC and cleaned the throttle body. The truck runs great. Now all i need to fix is the four wheel drive i think i'm going to take some where to fix this issue i think its out of my league.thank you again. !!!!!!!
...just lending a helping hand....great to hear that your truck is running well! 
the 4wd issue is not my cup of tea...but discribe what happening and there are a bunch of very knowledgeable folks on here who probably can help with that too. I think there is a drive train section where that would provide better service to you...Clutch, Transmission, Differential, Axle & Transfer Case - Ford Truck Enthusiasts Forums
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