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my 2001 2500 24 valve auto needs help, when cruising at 90 km and wanting to pass another vehicle, step on the accelerator, truck kicks down, speeds up to 100 km or so then falls on its face rpms go to governor but truck wont increase speed any more, have to pull back in behind, any suggestions

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Read codes, fill out you signature so we know all mods done to the truck. Do you have a fuel pressure gauge? If so what psi do you have to the pump? Sounds like your transmission not holding the power maybe??

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New raptor pump, running 14 psi, no codes, super chip( tried all settings), 4" exhaust, cold air filter, fuel psi guage. Guys, it seems like the truck will only go so fast when it kicks down to third and hits govenor, but will not upshift to 4th and pick up more speed.

Edited by captnhook
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Transmission serviced, oil and filter, and bands adjusted 3000 km ago, fresh fuel and oil filter, had codes checked 800 km ago at injection shop, no codes showing on reader, old fuel pump was changed when pressure started dropping to 6-7 psi, never had starting issues, raptor working good , could this be a shift point issue, like why does the truck not upshift to 4th when pedal is on the floor, shift great from 0-120 kmh if you accelerate  normally, just wont upshift when you have your foot hard in it

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