Acceleraton Question

[`08 BlueCrew]

When I had my 6.0 and stomped on the accelerator I remember it took a second or two for the turbo to spool up and then the truck took off.

When I stomp on my 6.4 still takes a second or two for the turbo but it lurches forward, stops, lurches forward again, stops, then it finally takes off.

Is this a common issue with the 6.4's or is there a trip to the dealer in order?

 

[archermatt]

Same thing on my new one, I think it has to do with the transfer from the small turbo, to the larger one after your rpm's get up there. I'm sure there is a wrench on here that can give you the specifics, but my old 06 was a power beast after it spooled!

 

[DaveBen]

You will have to learn how to drive a turbo charged truck. Stomping on the throttle is NOT the way to get going. Get into the throttle slowly and when the turbo is spooled up, get on it.

Dave

 

[GMC2500HD]

I was going to say, mine does not do that but I don't stomp on it...

 

[`08 BlueCrew]

Well after 10 years of owning turbo PSD's, I think I know how to drive a turbo diesel. However, there are times when you get into a situation where you either "mash the gas" or get hit.

 

[Dogman]

Sounds like the turbos are not in time. The small turbo is running out of boost before the larger turbo is up to it boost point. I had a VR-4 twin turbo car that would do that, I had to change the waste gate timing to fix it. I dont know what to do on the 6.4.

 

[sadavis73]

Sounds like the turbos are not in time. The small turbo is running out of boost before the larger turbo is up to it boost point. I had a VR-4 twin turbo car that would do that, I had to change the waste gate timing to fix it. I dont know what to do on the 6.4.

You will have to explain waste gate timing and i am an ASE master Truck and Automotive Tech and thats a crock. Sounds more like a accelerator pedal position problem or programming glitch, see if it has the latest flash installed in the pcm.

 

[`08 BlueCrew]

it is going in for service anyway so I'll tell the dealer about it. let them check it.