suncoast stage 4 limping

W

whatnot

Member
Jul 9, 2009
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Waunakee, WI
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I had a suncoast stage 4 kit put in a little over a year ago. In the last few days I limped it twice. I was passing both times. The first time I was pulling an empty trailer and the second it was just the truck. (different days) I don't think it shifted out of 5th either time.
I just checked the codes today and have p0700, p0735 and p0840.
Where should I start looking for the problem?

Thanks
 
Mike L.

Mike L.

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whatnot said:
I had a suncoast stage 4 kit put in a little over a year ago. In the last few days I limped it twice. I was passing both times. The first time I was pulling an empty trailer and the second it was just the truck. (different days) I don't think it shifted out of 5th either time.
I just checked the codes today and have p0700, p0735 and p0840.
Where should I start looking for the problem?

Thanks
Click to expand...

Speed sensor in the transfer case would be a start.
 
W

whatnot

Member
Jul 9, 2009
35
0
6
Waunakee, WI
www.rsiboilers.com
IOWA LLY said:
What are some of the other specs of the truck? Who built the trans?
Click to expand...

Which specs are you looking for? Pretty much everything on the engine is still stock. I have dual fm100 lift pumps, 5" exhaust, 285 tires on H2 rims.
I think my turbo may be going out as I have been getting a lot of black smoke and currently have the wastegate disconnected (was topping out at 28 before with ppe boost valve) and can't get much over 35psi (sometimes not even that)
Durallymax (Vinny) built the trans for me and tuned the truck with EFI Live.

Will check on the speed sensor, thanks for the advise.
 
maine04max

maine04max

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Dec 11, 2008
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ive never blown a turbo , stock or aftermarket but most say 32 is max on stock lb7 turbo after that your on borrowed time
 
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