Loss of power intermittent when accel - Ford Powerstroke Diesel Forum
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post #1 of 15 Old 10-04-2009, 09:24 AM Thread Starter
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Unhappy Loss of power intermittent when accel

Truck in question is 03 f-250 6.0 auto 4x4 132 000 Km. Have been reading all the old posts and searching on different forums for info on my problem. When i accelerate or am driving normal i get a loss of boost,or power with little to no drop in RPM, and get the flutter coming out the intake noise. From everything i have read, i narrowed it down to either the turbo vanes sticking, or maybe the egr valve being coked. So removed and cleaned the egr, it didn't look too bad, and also got the kit from IH and removed and cleaned the turbo as per directions. Coated everything in a thin coat of anti-seize and re-assembled and re-installed (the unison ring spun freely when i took it apart and didn't seem to be that rusted or carboned up). i re-set the KAM and truck was good for 2 days, now doing the same f-ing thing. The only thing left i might try is the VGT solenoid, But i hear they are quite expensive. Any suggestions are greatly appreciated. Thanks Dan.
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post #2 of 15 Old 10-05-2009, 01:40 PM Thread Starter
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also the fuel, oil and air filters are all fresh. i am new to diesel's so any help would be great. Thanks in advance!
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post #3 of 15 Old 10-05-2009, 03:59 PM
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were the turbo vanes on the intake side damaged in any way? and i have heard of throttle pedal do some funky things. hopefully a master tech will chime in

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post #4 of 15 Old 10-05-2009, 05:31 PM Thread Starter
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no, no damage to the turbo. everything spins freely and there was very little corrosion on the housing, and little to no carbon build up on the vanes and unison ring, but i cleaned them real good any way. i don't know if maybe the Injection pressure sensor is acting up? or the vgt actuator solanoid is messed up. i really have no diagnostic equipment to test these so just wondering how to tell what is wrong
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post #5 of 15 Old 10-05-2009, 05:47 PM
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bud i am having the same prob took it to ford said my egr was sticking so i replaced it i also cleaned my turbo vanes and still doing im gonna pull my hair out i think its just about got to be a sensor or some electrical let me know what you find out and ill do the same

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post #6 of 15 Old 10-05-2009, 05:52 PM
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MAP sensor?

O7 F-5504dr 4wd cab and chasis w/ 12' Scelzi service body 6spd manual trans. 200" WB 17,950 GWWR 4.88 gears
Overhead gauges w/ EGT and Boost. FCDP EGR Delete. AEM Workhorse CAI. Down pipe only, no cat or muff.
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post #7 of 15 Old 10-05-2009, 06:29 PM Thread Starter
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possibly the map? i looked it up, it seems it is only a 30-40$ part, so it probably wouldn't hurt to pick one up. if it was faulty would it send the wrong signal to the pcm and then mess up the function of the vgt actuator?
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post #8 of 15 Old 10-05-2009, 06:33 PM
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Yes sir, it could.

O7 F-5504dr 4wd cab and chasis w/ 12' Scelzi service body 6spd manual trans. 200" WB 17,950 GWWR 4.88 gears
Overhead gauges w/ EGT and Boost. FCDP EGR Delete. AEM Workhorse CAI. Down pipe only, no cat or muff.
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post #9 of 15 Old 10-05-2009, 06:57 PM Thread Starter
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cool thanks. i'll stop at dealership on way home from work tomorrow and give it a shot, is there a way to tell if it is shot.
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post #10 of 15 Old 10-05-2009, 07:02 PM
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That I do not know sir, I bokre the little nub off while I was doing GR delete. would not build boost with out MAP sensor being hooked up.

O7 F-5504dr 4wd cab and chasis w/ 12' Scelzi service body 6spd manual trans. 200" WB 17,950 GWWR 4.88 gears
Overhead gauges w/ EGT and Boost. FCDP EGR Delete. AEM Workhorse CAI. Down pipe only, no cat or muff.
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