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Power loss when cold

1044 Views 8 Replies 4 Participants Last post by  MADVAN
The problem I am having is when my truck is cold. After startup, I will start driving and my truck will be down on power. It will barely reach 50 mph on the freeway with black smoke coming out of the tailpipe for about 1-2 minutes. This happens at about 1/4 throttle. If I push the peddle farther, nothing happens. Once the temp gauge gets to halfway or normal operating temp, I will get full power. If I feel the power loss, I have pulled over, turned off the truck, restarted it and the problem is gone. My truck is a 2001 F-350 crew cab long bed, 7.3 powerstroke with auto trans, 6.5" pro comp lift with 35" tires, hypertech chip and a airraid intake. I don't get a check engine light when this occurs. This will even occur on a 70+ degree day. I feel it might be some type of coolant sensor, but that is just a guess.
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It could be alot of things....Make sure the EBPV is open, Have someone read the ICP pressures & EOT as it compares to ambient air temp, Make sure the connections to the valve covers are tight, Inside too.

It can be as serious as the LPOP wearing out. Does it stall after starting cold sometimes ?...

Others will have more ideas...
Is the oil full & fresh ?...
I should have asked if the oil was full & cute... /ubbthreads/images/graemlins/biggrin.gif
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