95 PSD.

Not sure I am describing this right but here goes.

Last year started the truck and it had no power. I would describe it as if the exhaust was plugged up. Turned it off and started it up again. All has been good since. Recentley I have noticed when I start it up and take off there is a momont where it feels the same way and then it goes away. Does this thing have a waste gate (or whatever it is called) in the turbo that is not opening as it should or is this normal. If not what can I do? I'm driving to CO. with the boys over spring break and am kinda concerned about it.

Thanks

 

There is no waste gate on the OBS trucks. It sounds like your EBPV is closing. Does the exhaust make a loud hissing sound while its doing this? What are the temps? Does it do it when its warm and cold? Need a little more information, but I would guess it's your EBPV sticking.

 

It does it when its cold. I cannot say wether it gives a hissing sound because it only last for a second or two. It doesnt do it all the time but it feels the same as if you started out in second gear. What is a EBPV?

 

sounds liek your valve, its normal on these trucks, you can unplug it, just a 2 wire connector right under the air inlet tube on the turbo

 

What valve?????

 

exhaust back pressure valve. shuts for faster warm up. good when working proper, a booger when not working right. unplug it and it will be fine. you dont want to chance it shutting while on the highway.

 

Look right infront of the turbo, on the impeller side. You will see a two wire clip there. Right next the the driver side valve cover.

 

I see it. When does the valve "kick-off". Is it controlled by pressure. I let it run a minute or so before I leave to get oil everywhere. But, definatly not long enough for the motor to warm up.

 

The EBPV is controlled by oil pressure. It turns off when the oil temp reaches a certain temperature. I can't remember the exact temp but I think its somewhere around 120?

Thus, it takes a long time to get your oil temp that high let alone up to operating temperature.

Also, the valve will open once you hit a certain rpm and will close again once it goes below that desired rpm/back pressure.

Most people on here have them unplugged besides they stick or they become annoying. Some even have them rigged up for an exhaust break.

 

Thanks,


Its not a problem for me. I just didnt want to get stranded. If it should really mess up I'll just unplug it.

 

unplug now, so it dont stick

 

I can do that. But, why? If its working why wouldnt I leave it alopne. Is it beneficial to unplug?

 

The reason why people unplug it is because they have a tendency to stick, and that it can come on when you don't want it to. I.e. going down a hill make cause the back end to slide out on slick surfaces because it works like an exhaust break for the engine.

 

That would be great. Especially with two little boys if the roads are icy