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Ford Powerstroke 99-03 7.3L Discussion of 99-03 7.3 Liter Ford Powerstroke Turbo Diesels

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  #1  
Old 11-05-2009, 07:31 PM
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Default how can i fix a turbo surge

i have a early 99 7.3 and when im on the throttle and at about 1000 to 2000 rmp at a constant speed it surges it only does it when it is cold out. i am wondering if any one knows any cheap and easy way to fix this

Thanks Guys

codiesel's Sig:1999 F350 Powerstroke 7.3 -- Ext. Cab SB -- 5" Exhaust -- SCT -- Pyro, Boost, Trans Gauges
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  #2  
Old 11-05-2009, 08:59 PM
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Its not surging, its the EBPV (Exhaust Back Pressure Valve) closing due to the low oil temp and the air temp is low.

If you leave it running after about a minute it should idle up and then the EBPV will close, making a hissss sound. Same thing happens when your driving.

About the only way to stop it is to let the truck warm up fully. You can also unplug the EBPV under the turbo, but that is not the correct way to do it.
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  #3  
Old 11-09-2009, 07:19 PM
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thanks it doesnt seem like my truck warms up enuf tho becaus eit normal wont go away at all what should i do about that
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  #4  
Old 11-10-2009, 02:13 AM
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I also have any early 99 and I have never had or heard of an early 99 surging. I think that your problem is also ebpv related like joe said. I usually never drive mine when its cold I usually let it run but this is the first winter Ive had the truck. When mine high idles and I touch the brake it quits high idling. Not sure about that opening the ebpv back up though cause mine is on a switch anyway. I didnt think it closed the ebpv while driving cause I though I read something about it hurting the lifters not exactly sure.

Kyle_KleinSS's Sig:Early 99 F350 7.3 PSD Diy Intake,4 in TB straight pipe, 17* HPOP CCV Mod, Foil Delete, HPX, BTS VB, Coolant Filter, Autometer Boost, Pyro, Trans, Oil & Water Temp, PHP F.U. TC Lockup, EBPV Brake, Leveled, Tru Cool 4739 sittin on 315/75/R16 Toyo Open County M/T


Last edited by Kyle_KleinSS; 11-10-2009 at 02:18 AM..
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  #5  
Old 11-10-2009, 10:05 PM
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if i unplug the EBPV will it hurt any thing or is it ok to do that cuz it never goes away
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  #6  
Old 11-11-2009, 09:10 PM
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I think it will be fine mine is basically "unplugged" cause its on a switch so the pcm thinks its not there. If the noise persists after maybe its stuck?

Last edited by Kyle_KleinSS; 11-11-2009 at 09:30 PM..
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  #7  
Old 11-18-2009, 10:00 AM
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ok thank guys
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  #8  
Old 11-18-2009, 10:47 AM
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Where are you with that trailer ? Obviously not here

PSD's Sig:97 F250 Powerstroke 7.3 4X4 -- Ext. Cab LB -- 4" lift -- 16.5" Weld Racing Rims -- 33" BF Goodrich A/T -- 3" Downpipe -- 5" Stacks -- 6 Position Chip -- Boost, Pyro, Trans Gauges -- Banks Compressor Wheel -- Work in progess...
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  #9  
Old 11-27-2009, 12:55 PM
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anyone have pictures or anything to tell me where to unplug that i have the same problem in the mornings

jake 94's Sig:2000 CTD QCLB EJWA/HOT stacked smarty, Built Trans, FASS titanium 150, II tow compounds, II 6x0.016, ARP 625s, Hot rod vp, PDI manifold, 5inch exhaust, custom ladder bars, lock up switch. 605hp 1467lbs uncorrected
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  #10  
Old 11-27-2009, 11:29 PM
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Underneath the turbo. It should be the only wire in the area.

robammerman's Sig:1996 Ford F350 4X4 4dr long box. Bully Dog Six Pack chip, Stage II injectors, hybrid turbo, retrofitted 6.0 intercooler, Bank 4" turbo back exhaust, ditched the K&N intake for a dyi Tymar, Snow Performance Stage 3 MPG max, South Bend clutch, 4.10 gears and a spool in the rear. 315/75/16 BFG ATs 251,000 miles.
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