Join Date: Oct 2005
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04 PSD no/low rev... seems like hpop...
Ive got an 04 with 139K. the truck starts but really doesnt jump when it fires. idles ok when cold. FICM reads 48V ICP pressure desired is normalish 650 and actual is same, both drop as engine warms up, FPR is 35-37% when cold as engine warms up it increases up to 85%. When cold or warm and you have matching ICP pressures until you push throttle down. Then desired increases up to 1200-1300 and actual drops to 400-450 and engine will not Rev... I have several codes starting with
P2290 ICP too low
P2614 CMP signal output circuit open
P2617 CKP signal output circuit open
P2623 Inj CPR circuit open
I did not have any of these codes other then the first until I let the truck Idle for about 10-12 minutes and it died... it would not restart until it cooled down. then it restarts and I go through process again...
NEED HELP... Cant afford to just throw parts at it!