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Cold start, sluggish power

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Old Nov 13, 2012 | 05:19 PM
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Cold start, sluggish power

Got a 97 Powerstroke van. I'm pretty new to diesel. Still learning how it all works. Gonna show my newbie colors.

Would a stuck open thermostat cause the engine to run rough when it's cold. I'm preheating for about 30 minutes and upon take off, there's a massive "woosh" sound, no power, it's just sluggish. Once it FINALLY warms up, it's good to go.

When I started it this morning, I noticed the engine cool gauge barely moved above cold and it had been running about an hour. I'm thinking possibly a stuck injector? Maybe "just" the thermostat? Anyone else experience this?
 
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Old Nov 13, 2012 | 05:33 PM
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From: Ashland City, TN
exhaust back pressure valve. =)

It helps the motor heat up. Its a big butterfly valve on the turbo.

You probably could use a thermostat to help get everything running right, if the motor isn't warming up very quick even with the EBPV going, then you got a bad T-stat.

The low power is probably from the EBPV being stuck closed or not operating right.

The dash gauge is very very inaccurate though. Mine bearly goes into normal at 150 degrees.
 
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Old Nov 13, 2012 | 05:45 PM
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Well that would make sense then. Especially with the wooshing sound. Guess I got my work cut out for me this weekend.
 
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Old Nov 13, 2012 | 11:11 PM
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You can disconnect the power supply to the EBPV, and your power will pick up and the whooshing will go away. It is a two prong plug on the drivers side about 2/3 of the way back from the front of the engine, just to the inside or top side of the drivers side valve cover. Just unplug it and leave it hang. This will store a code in your computer, but will not activate your check engine light. I disconnected mine a few years ago, with no problems. Hope this helps...Thanks...Kevin
 
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Old Nov 13, 2012 | 11:13 PM
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From: Ashland City, TN
Originally Posted by overtimeracing
You can disconnect the power supply to the EBPV, and your power will pick up and the whooshing will go away. It is a two prong plug on the drivers side about 2/3 of the way back from the front of the engine, just to the inside or top side of the drivers side valve cover. Just unplug it and leave it hang. This will store a code in your computer, but will not activate your check engine light. I disconnected mine a few years ago, with no problems. Hope this helps...Thanks...Kevin
The EBPV is on the turbo homie.

Your thinking a super doodie.

The EBPV is oil operated, not electric.
 
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Old Nov 13, 2012 | 11:16 PM
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They aren't the same? Sorry...
 
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Old Nov 13, 2012 | 11:20 PM
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From: Ashland City, TN
Originally Posted by overtimeracing
They aren't the same? Sorry...
But the EBPV is controled though a valve on the pedestal, you have to unplug it there.

Where the wire comes from on the van, I have no idea.

IIRC the van pedestal is the same, just a little different A/R's on the turbo.


The EBPV isn't a bad thing and really assists in warmup.

The proper way to fix the issue is to unplug the sensor and tie it off, it can still actuate even if the sensor is unplugged.

Now, I shoudln't have been such an ****.

on the van, the plug might be where your talking about.

So, I'm sorry.

It will clear up when he changes the T-stat and the truck will warm up.

The woosh sound is the EBPV opening, it should gain power after that.
 
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