when does your turbo kick on?

[makya]

I don't know if some of you remember me, but I had a pmd go out and I just ordered one from pensacola. I've been driving my truck occasionaly(98 cclb k3500), and I noticed it's been smoking a lot more lately, even under light acceleration sometimes, and the turbo doesn't kick in until about 2400 rpm.

I'm figuring I'll probably have to do the lift pump on it, but what else should I be looking for?

sorry for not doing the form this time, it's just sort of a general question.

 

[Veg_Out]

Without your signature at least filled out this is a total shot in the dark.

Let's assume your truck is totally stock, you likely have some type of vacuum problem to the solenoid that controls the turbo, or the solenoid itself is bad.

It shouldn't smoke much at all, and should set some type of code.

As for adding a lift pump, you'd be better off spending the money for a gauge, then you'll know when you need a pump!

Good luck, more info please!

 

[makya]

Without your signature at least filled out this is a total shot in the dark.

Let's assume your truck is totally stock, you likely have some type of vacuum problem to the solenoid that controls the turbo, or the solenoid itself is bad.

It shouldn't smoke much at all, and should set some type of code.

As for adding a lift pump, you'd be better off spending the money for a gauge, then you'll know when you need a pump!

Good luck, more info please!

thanks, yes the truck is totally stock, but I think the PO had something hooked up under the hood. there is a big red pull switch on the dash and the wires run through the firewall to the drivers' fenderwell. :shrug: so who knows.

I know I need to get an obdII reader, I haven't yet. I'm figuring after I get the PMD in, I'll be able to troubleshoot the other things. I have a feeling I'll be looking into replacements for the wastegate solenoid, and streamlining the fuel system. I really like your FTB setup, straightforward and effective.

 

[BigBlueChevy]

uh oh. Another Land Yacht we need room for

Seeing as your truck is a 98, you have a GM-8 turbocharger that is controlled by a vacuum pump, solenoid, and an internal wastegate. Not much to go wrong with this system, but more than necessary.

Easiest way to tell is get yourself a boost gauge. They are relatively cheap(about 15 bucks for a decent quality one). If you want to go all out, you should order an EGT gauge and ELECTRIC(not mechanical) fuel pressure gauge. That will give you more information right there than anything else.

 

[D2 Cat]

I'd suggest to do some homework to form your decision on an electrical or mechanical fuel gauge.

There are positive and negatives for each.

I began with an electric 'cause I read and listened to testimonies of not wanting diesel in your cab because of safety and odor issues. I had a name brand (and expensive, by my standards) gauge, and after I replaced the sending unit the third time when I was 700 miles from home I switched to mechanical when I got home.

Mechanical has never been a problem in the three years it's been in there. No odor, no leaks, no problem. I used stainless wrapped line. Most importantly it tells me the fuel pressure!!

I had a snubber and a needle valve in the line and the gauge couldn't take the hammering from the diesel IP pulsating.

Just my opinion, and it's free even without asking!!

 

[ak diesel driver]

I know I need to get an obdII reader, I haven't yet. .

check out car code it will also let you set the timing.