new lift pump but still hard to start
06-03-2005, 09:33 PM
#1
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new lift pump but still hard to start
I know what everyone is gonna say is the problem, but lemme just spit some info out.
What I have:
Brand spankin' new lift pump
Brand new fuel filter
When cold the truck starts hard
P1639 (i think, don't remember) error code
P0336 (i think, don't remember) error code
20+ psi of boost
12+ psi fuel @ WOT
What I don't have:
A P0216 error code
A plethora of power
A slipping clutch
So...anything OTHER than the vp44?
What I have:
Brand spankin' new lift pump
Brand new fuel filter
When cold the truck starts hard
P1639 (i think, don't remember) error code
P0336 (i think, don't remember) error code
20+ psi of boost
12+ psi fuel @ WOT
What I don't have:
A P0216 error code
A plethora of power
A slipping clutch
So...anything OTHER than the vp44?
06-03-2005, 09:55 PM
#2
Registered User
Not sure what those codes are, but make sure BOTH preheater grids are working. I have seen several recently with a cold starting problem, and found that only one grid was working. The culprit in each case was the relays.
06-03-2005, 11:38 PM
#3
P0336: Crankshaft Position Sensor (CKP) Signal
There's a rash of that goin' around right now...hard to start, lots of white smoke.
Might be the wiring connector to the CKP or it might be a bad CKP. Wish I could be more help.
There's a rash of that goin' around right now...hard to start, lots of white smoke.
Might be the wiring connector to the CKP or it might be a bad CKP. Wish I could be more help.
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