04 PSD no/low rev... seems like hpop... - Ford Powerstroke Diesel Forum
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Old 07-17-2012, 04:58 PM
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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!

Thanks Dave
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Old 07-18-2012, 04:23 PM
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Anybody with any thoughts on this before I swap out the HPOP??? the truck is all stock and has had a turbo put on by ford...
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Old 07-18-2012, 04:54 PM
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you said the ficm votls are 48v when running? what is it whie trying to start?
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Old 07-18-2012, 09:09 PM
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Quote:
Originally Posted by realstiffyman View Post
Anybody with any thoughts on this before I swap out the HPOP??? the truck is all stock and has had a turbo put on by ford...
My thoughts are you can test for hpop leaks before you pull it out, if you suspect that.

Sent from my SCH-I500
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Old 07-19-2012, 07:43 AM
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I cycled key on FICM 47.5 until glowplugs cycled off, then 48. stayed at 48 when cranking and when fired. then bounced 48-48.5

I pulled lines loose that go into front of heads and tried to inject air into the lines. 120 psi. could not hear any leaks and seemed to hold the pressure. I removed the oil fill cap and listed through there. Is there a better way to test?

Thanks Dave
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Old 07-19-2012, 07:50 AM
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Quote:
Originally Posted by realstiffyman View Post
I cycled key on FICM 47.5 until glowplugs cycled off, then 48. stayed at 48 when cranking and when fired. then bounced 48-48.5

I pulled lines loose that go into front of heads and tried to inject air into the lines. 120 psi. could not hear any leaks and seemed to hold the pressure. I removed the oil fill cap and listed through there. Is there a better way to test?

Thanks Dave
I'm pretty sure you just injected air into your fuel system, google hpop leak test.

Sent from my SCH-I500
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Old 07-19-2012, 07:52 AM
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You can air leak test through the ICP sensor on the pass valve cover.
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Old 07-19-2012, 08:00 AM
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early build, ICP is behind turbo

Yes I did inject air in fuel system... lol uhgg...

It didnt like that either...
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Old 07-19-2012, 01:48 PM
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Just verified voltage on FICM with my fluke meter. 48.5 at Module andsame while cranking, upon start 48.7. so im thinking good there... I guess Ill pull the turbo and do some leak tests on pump
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