I always park my truck in the garage overnight, last night I didn't feel like pulling it in. I started it this mourning to let warm up and I didn't hear ebpv close like usual, so left after about 10 minutes and now when driving at any light throttle cruise speed the ebpv closes
until i give it a quick snap on the throttle then goes back to wanting to close. any suggestions. Didn't do it until I parked outside not that cold hear,35 degrees.

same problem, cant figure out what it is either.

powerstroker52's Sig:

2001 24V cummins, 6 inch aussie cut stack for side exit, edge with smarty stack on the way, and built tranny.

my 94 and 95 do it when its cold out, always stops after the motor warms up.

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and 35 is real cold.

04redstroker's Sig:

2004 F350 6.0 SCT w/ TSD tunes, straight pipe, S&B intake, 8in fabtech, 38*15.50 kumho m/t, 20in XD revolvers, F&R replacements, 07 harley headlight, custom painted grill 3.5in DP
2005 dodge cummins 487rwhp SOLD
1968 dodge d200 38000 orig. mi

yeah it will also stop if you let the truck run for a good idk 10-15 min then when u go outside to leve just shut it off for literally 1 second then start it back up then it will be fine, thats what i do with mine

If you will unplug it or disconect it from the fap and hard wire the flap open you will not have to worry about it ever again!!
If it is giving you trouble now it is only going to get worst!
Mine even after diving for hours in the cold would just close and of course you lose power cause of the flap closing and no exhaust relief!

The 95 just started to stay closed the other day if you dont plug the truck in. Which wires need to be tapped to leave it full open?

just unplug it. easy.

CSIPSD's Sig:

01 F-250 SC,175k,16gauges,AFE-2,Modded H2e,6.0 IC,Hybrids,Water inj,Swamp tuned,Studs,Forged rods,910 springs,4"dual's,Aero,6" tip's,100 axl tank,4" lift,37" TOYO MT's

With TN BB and old set up...467hp-1066tq

Joe-AKA Gauge whore

I have two powerstrokes, a 96 and a 97. I also live in Minnesota (-10 F last night). What you are describing is the normal warm-up valve operation. It is a pain in the a$$ until it warms -up, but it also reminds me not to hot-rod until it does.

If it is closing after hours of operation, I would think the ecm is getting faulty information from a sensor. maybe engine oil temp or intake air temp or something like that. If that is the case it would be worth fixing because they also affect tuning.

Just idling for extended periods in cold weather may not be enough to raise the eot enough to keep it open.
Keep in mind that the ebpv's sole purpose is to restrict the exhaust when cold. This results in more fuel being added to maintain an idle (or other rpm if driving) and thus warming up faster.

do you have an intake on your truck? the EBPV reads off the sensor in the filter housing with an intake i guess it throws that sensor off, mine usually will do the samething til the truck warms up but only when its below 40 and it has been parked outside unplugged for like 6 hrs+

yeehaw's Sig:

Yee-Haw Motorsports-Waukesha, Wi
1996 F250 ext cab long bed, 7.3 psd, 305k original, E4OD, edge ez, S&B intake, 3 inch downpipe, 4 inch straight exhaust, 5 inch bullhaulers
1990 thunderbird sc, minor bolt ons

I will get the operating specs for these. Sounds like you have a problem with yours. It should only come on when the engine is cold to help it warm up. When driving it should open so as to not restrict performance. A good indication of a problem would be if it has started to work differently than before. (I'll post back when I find out how it is supposed to work!)

millco's Sig:

Dan
06 3500 SLT 4x4 Megasized SRW with a 48RE. I've added: 2 micron fuel filter, Road Armor front bumper, Are top. I want to add: twin Frantz oil filters, and a few other things.
73 Int'l Crew Cab currently getting a '90 12VCummins and some other good things!!.....

mine stays partially closed till it gets about a needle and a half up off the line. when i bump the throttle it opens quickly then will partially close at a cruise. mash it, it opens. just on the colder mornings. I dont think anything is wrong with it, it is just trying to warm it up quicker, do its job. You can actually turn it into a exhaust brake if you want. your fine.

Tinman875's Sig:

02 FORD STROKER CREW, 51K MILES,4IN TURBO BACK FLO PRO, EDGE EVO ON 80, AFE INTAKE, 6IN LIFT, Runnin Mobil 1 5-40, PURDIED UP A BIT...


In the oil business.. Conrad & Bischoff Nampa, ID

It is quite normal for the valve to close as you are driving if the motor is not up to temp... Under hard accel it should open.

I was meaning if it wouldn't open when accelerating. They can start to have problems where they will stay shut and the truck will not have the power it should. I don't know what causes them to get 'sticky' like that. They are operated by an electric solenoid that controls a valve. The valve uses engine oil pressure to move the butterfly. I don't know if the solenoid valve doesn't operate correctly or if carbon build up makes the butterfly sticky. When it acts up you are almost left with only idle. I'm trying to get more info on it to know what inputs their are to the computer. I would think there is a over ride switch or something in the throttle pedal. Maybe that is going bad and not forcing the valve open when more power is required.
Don't get me wrong. When they work correctly, they are great. It really aides in engine warm up. If you wire it up, it will also work as a good engine brake.