Turbo loses boost/pressure only whe it's gets colder

[Brucesearly99]

I can be driving down the road in overdrive with engine at normal operating temp but only when it's below 45 give or take a few, and it's like the wastage or whatever else is I there that holds pressure will let go and the truck looses all power, motor stays running, let off the gas and feather it a little bit and it will go back to normal. It'll do This the whole time when I'm driving back and forth, I don't know if there is some other valve in there that lets go, or what. I don't know if this works on vacuum or not, I did put manual lock outs last year and my defroster is stuck on. None of the other functions work. I don't know if the two are related or not. Early 99 7.3 6 speed. Any help would be appreciated. Thanks


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[79jasper]

Just search "ebpv"

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[Brucesearly99]

Ok thanks


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[ithumpwheniwalk]

Yeah, happened to me. Same year truck, 6spd, etc. Fairly common. I didn't get the chance to fix it right away, but a chunk of bailing wire wrapped around the actuating rod fixed it until it could be dealt with properly.

 

[Ron's Power Stroke]

easy fix...unplug the EBPV down on the front side of the turbo pedestal...problem solved...

 

[mandkole]

^^ this. The valve will stay open when unplugged.

Its a system that's supposed to work only when the engine oil temp is cold (to aid in warmup). But its typically not needed.

 

[crcrawford87]

Plug the lines going to your vacuum hubs or plug the line going to the vacuum solenoid as you don't need it anymore and your vents will work again.