WTF surging and cutting out under load - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 07-13-2009, 07:29 PM Thread Starter
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WTF surging and cutting out under load

sorry i posted this in the wrong forum....GRRRRR

2005 F350, auto transmission, dually 4x4
163K miles
Not sure what's going on but ever since I had the head gaskets replaced, the egr and oil cooler replaced and the installation of a block off plate in the up-pipe, when I get the truck to about 2200 rpms under load, it starts cutting out and acting like it's hitting a brick wall.
Cruising at that speed, usually around 65 to 70 miles an hour, it's okay but begins the cutting out trying to get up a hill or accelerating.
Anyone know what's up with this? I had the latest ECM flash done in April after the head gaskets were replaced so I would think I'd be okay?

HELP! I'm going TDY for a few weeks and would like to resolve this issue upon my return

Last edited by Lazy_C_Ranch; 07-13-2009 at 07:32 PM.
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post #2 of 7 Old 07-14-2009, 12:22 AM
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Do you still have the original STC fitting?,, sounds like it could be a high pressure oil issue, or bad IPR valve. Any hard start issues?,, any smoke? any codes pulled?

-Chris-
2003 F250 SC/LB 6.0L 4X4
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post #3 of 7 Old 07-15-2009, 04:01 PM Thread Starter
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Originally Posted by DryHeatDude03 View Post
Do you still have the original STC fitting?,, sounds like it could be a high pressure oil issue, or bad IPR valve. Any hard start issues?,, any smoke? any codes pulled?
Those are good questions. I don't know the answers to all of them but there is no smoke, no cel and I haven't checked for codes.
Checking any of that looks like I might as well replace the stuff related to the hpop correct??
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post #4 of 7 Old 07-15-2009, 04:26 PM
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Originally Posted by DryHeatDude03 View Post
Do you still have the original STC fitting?,, sounds like it could be a high pressure oil issue, or bad IPR valve. Any hard start issues?,, any smoke? any codes pulled?
It could also be the ICP sensor, but the IPR or STC fitting leak are probably more likely candidates.

Mark
06 F250CC SB FX4 Lariat;ARP studs;OEM gaskets; Banks exhaust;DynaTrac Ball joints;Coolant filter; High-Idle;RACCCV6000;JimmiJammers;Ravelco;SynchroMax trans case;Fumoto valves;Harpooned;CPOhighwayProducts toolbox;tracrac;Fox Weatherboots;Wet Okole Seat Covers;BriteBox;Re-flashed;Quadzilla Recon XZT Fuel Press;Blue FPR spring;DashDAQ;PHP FICM;RiffRaff boots;DCPower270AXP;PowerInverter;Rancho7000's; BPD EGR cooler;One-piece HPOP fitting;BilletWaterPump;SCT w/ Matts SRL;ELC Ultra
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post #5 of 7 Old 07-15-2009, 11:49 PM
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Originally Posted by Lazy_C_Ranch View Post
Those are good questions. I don't know the answers to all of them but there is no smoke, no cel and I haven't checked for codes.
Checking any of that looks like I might as well replace the stuff related to the hpop correct??
Don't just start throwing parts at the truck, that can get needlessly expensive in short order. You need to get the truck on a good scan tool such as AE, and check for any codes that may/or may not be present, and also check ICP and IPR duty cycle. It could be a number of different things based on the info presented. But without more info its throwing darts in the dark.

-Chris-
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post #6 of 7 Old 07-15-2009, 11:50 PM
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Originally Posted by bismic View Post
It could also be the ICP sensor, but the IPR or STC fitting leak are probably more likely candidates.
Agreed,,

-Chris-
2003 F250 SC/LB 6.0L 4X4
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post #7 of 7 Old 07-16-2009, 03:04 PM
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Quote:
Originally Posted by DryHeatDude03 View Post
Don't just start throwing parts at the truck, that can get needlessly expensive in short order. You need to get the truck on a good scan tool such as AE, and check for any codes that may/or may not be present, and also check ICP and IPR duty cycle. It could be a number of different things based on the info presented. But without more info its throwing darts in the dark.
This is some of the best advice on the internet!!

Mark
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