New turbo getting low boost.

[dclifford]

Just had a new stock turbo installed and I am getting very little boost with extreme lag. I took it back to the shop and they cleaned the maps(?) tube. When floored the rpms jumps to 3000 and the turbo is producing about 4 lbs of boost until i hit about 40 mph then it kicks in and boosts to 22 lbs max. Obviously the truck is a dog.

[Lilpooh]

Welcome to the ORG!!

What year motor? '03 or '04-'07?

[dclifford]

Thanks 03, f250 150k. Oh and one new injector too.

[Lilpooh]

Read post #8 on this link.
a little noisier?

If that don't work, you may have a boost leak at one of the boots. Also check the up-pipe and "y" pipe for cracked bellows or bad connection.

On this link is a diagnostic procedure toward the bottom for the turbo.
http://www.forddoctorsdts.com/articl...argerGuide.pdf

[a2elvis]

Perform VGT relearn

[dclifford]

I took it back to the shop, they are going to check it for anything obvious or simple. They said the intake system could be clogged and may need to be cleaned (about $1000).

On a side note he also said the head gaskets are guaranteed to go out at some point and will need a head job. This was said as a general rule of thumb about powerstrokes with 150k. Is this true? He said I should just get a gasser.

[Evil Eye]

I would honestly be looking for another shop. It sounds like they are wanting to take your money without truly diagnosing the problem. It's likely that the shop doesn't have a lot of experience with the 6.0L engine.

PS. Where are you located?

[dclifford]

First off i must thank all of you for the support and knowledge for I am lost on diesel mechanics. The input is greatly appreciated. I am thankful.

I must admit I did not do the vgt relearn process before taking it to the shop and just had a thought. When I picked up the truck the clock had to be reset but the radio stations were still preset. Would this indicate that the relearn process was not completed?, because wouldn't the radio completely reset with both batteries unhooked?

[dclifford]

I am in Oklahoma City. They were recommended, but I am starting to feel like we are getting ready to just start throwing parts at the truck, with a hope and a prayer. The turbo was bad, a bolt or something went through the turbo.

[nylyon]

Resetting the clock was because the batteries were disconnected. It is very likely that the fix is just the relearn and something you can do with just 20 minutes time and an 8mm wrench. Fully warm up the truck to 100% operating temperature, then disconnect both batteries, turn on lights and wait 10 minutes. Now turn off the lights, connect both batteries, turn the key to on wait 10 seconds, turn it off wait 10 seconds, turn it on wait 10 seconds, start the truck and let it idle for 7 minutes. Turn the truck off, restart and test drive.