Slow start
Logistics Pro
Joined: Dec 2004
Posts: 4,138
Likes: 7
From: South Weber, Utah
Well I put the new FICM in . Thanks Ed at FICMrepair. Great product. I went with the Atlas 40 tune and what a difference! Unfortunately there is still a slow start issue in the morning when cold. IPR 84.7%.....ICP 110... In the past in the morning when cold is when it started the fastest..I haven't timed but it probably cranks for 4 or 5 seconds before it cranks....Thanks
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Senior User
Joined: Jul 2011
Posts: 226
Likes: 0
From: Grays Harbor ,WA
Well, I did the blue spring upgrade finally (have had the parts for a month or two) and parked it with the nose downhill, theres still a slow start issue..What next? Look for codes? I have a scangauge? Will that help anymore?
More Turbo
Joined: Jan 2011
Posts: 699
Likes: 20
This. ^^^ I've had to do the same thing you did on my 06. Dummy plugs are easy, STC is a must anyway on this model.
Logistics Pro
Joined: Dec 2004
Posts: 4,138
Likes: 7
From: South Weber, Utah
Since the oil rails can be used on either side of the engine there are 2 standpipe ports and the dummy plugs go in the ports not occupied by the standpipe, on the late 04' they have a square opening in the top so they can be removed with a 1/2" drive ratchet and the 05' and up take a 10MM hex bit to remove them and the updated plugs take a 12MM hex bit.
New User
Joined: Mar 2014
Posts: 11
Likes: 0
By what you have explained so far by your ICP and IPR values during cranking you definately have an HPO leak, faulty IPR valve or ICP sensor. Or electrical connector issue. Have you unplugged the ICP sensor and tried to start?
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Senior User
Joined: Jul 2011
Posts: 226
Likes: 0
From: Grays Harbor ,WA
Ok, I haven't done anything since the blue spring upgrade the other day and the truck is starting fine again. No prolonged crank time. It just starts right up.
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Senior User
Joined: Jul 2011
Posts: 226
Likes: 0
From: Grays Harbor ,WA
No. I haven't unplugged anything and tried to start. I was just getting my ducks in a row to do standpipes, dummy plugs and STC fitting. I was just praying the truck stayed running until I could do that.
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