No throttle response at startup - Ford Powerstroke Diesel Forum

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post #1 of 2 Old 01-05-2011, 05:54 PM Thread Starter
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No throttle response at startup

I have 2 friends with 6.0 rigs. One a 2004 F-350, one a 2005 Excursion. Both have the same prob. When they start the truck up in the AM and let it warm up a little then drive off, they have no power. Both say it's llike mashing the pedal and it does nothing, won't even rev up much.

I scanned the 2004 F-350 with the AE and he had a bad FICM (Just replaced in april 2010 too) was barely putting out 30 volts. Gave him my spare and took his in on trade. It has the right voltage now and fires up smooth but still no power when cold. He's running regular rotella oil, I told him to switch to the T6 and a bottle of Rev-X to see if it's stiction. He has no injector codes, the power balance looks good, spool valves sound strong, and his HPOP system is well within acceptable range. His accelerator pedal position is operating OK per AE so I don't know what else to tell him. Is there something else I'm overlooking? What else could cause the "no power at start-up" sendrome? Thanks in advance.

The other friend is watching closely, as he wants his fixed too, so I need some assistance.

2004 F-250 CC Lariat FX4, 285/75/16 Goodyear Wrangler Dura Trac's, Full EGR Delete, ARP headstuds, Swamp's 58V FICM, SCT Livewire with Custom Tunes by Innovative Diesel and Quick Tricks Automotive, 4 inch stainless straight piped exhaust, High Idle Mod, Smoke Switch, more mods to come.

Last edited by BirddogTN; 01-05-2011 at 06:18 PM.
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post #2 of 2 Old 01-19-2011, 06:00 AM
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Quote:
Originally Posted by BirddogTN View Post
I have 2 friends with 6.0 rigs. One a 2004 F-350, one a 2005 Excursion. Both have the same prob. When they start the truck up in the AM and let it warm up a little then drive off, they have no power. Both say it's llike mashing the pedal and it does nothing, won't even rev up much.

How long is "let it warm up a little then drive off". Does the problem go away once the truck gets up to operatiing temperature or does it permanently have a no throttle response issue. When I started having stiction issues I changed to Rotella T5 and bought some hotshots secret and it took care of the problem for 3 months but it seems to be creeping back slowly like your describing.

Awesome thread on oil / cold start issues for 6.0 ----> http://www.powerstroke.org/forum/gen...ably-like.html
Troubleshooting a no Start Condition ---> http://www.powerstroke.org/forum/6-0...condition.html
Still using Ford Coolant? ----> http://www.powerstroke.org/forum/6-0...nce-temps.html
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