One of the mechanics at work today drove my truck. When he gets out he tells me that i am missing a lot of low end power. Ive always thought it was a little sluggish off the line but i wrote it off to turbo lag. He told me that the exhaust back pressure sensor needs to be replaced. Does this sound right?

 

Possibly, there is more than one thing or sensor that can cause a problem. Without hooking it up to the computer and running diagnostics, your friend is guessing at a location to start tracing the problem.

Are there any other symptoms?

What year, mileage and mods are on your truck?

Is your truck empty or loaded?

 

Its a 2003 6.0 with 135k on it. Its got a bully dog on it but hasnt been on in 6 months. I disconnected the battery several times and ran the kam memory out of it. Its just lacking a lot of low end power. When ever im pulliny 13k on my gooseneck it really sucks unitl i get moving. When im running 50 or over i can hit the gas and the truck hauls ***. But just no low end power. The mechanic works on a fleet of about 30 6.0's of various years. So he does have some knowledge. And it doesnt matter whether its loaded or not.

 

grinekb,

It could be an EBP sensor but without further testing it cannot be confirmed. Also since you have a 2003, there was a recall 06E17. Part of this program deletes the EBP sensor entirely, and one of the things it addresses is low power.

"2003/04 Computer Programming Recall 06E17:
Truck built before 9-29-03 are being recalled to have the computer reprogrammed. The reason for this recall is to correct fuel injection timing during cold operation, EGR valve control, lack of power, check engine light illumination (P02263 or P0299), hard starting and rough running concerns related to Exhaust BackPressure sensor corrosion. Other symptoms not listed in this recall, but which could occur, would be excessive smoke, turbo control and surging at idle or cruise. The new update eliminates the EBP sensor input to the computer. The exhaust backpressure will now be inferred/calculated using other sensor signals. Trucks should be reprogrammed using versions 41.8 or 42.1 or higher.
After this reprogramming, the truck should be test driven, the computer checked for a codes and the codes cleared (even if none are present), the key cycled on for five seconds, then turned off twice, then the engine started and allowed to idle for 5 minutes at operating temperature to allow the computer to relearn the EGR valve closed position value. This is to prevent erronious codes or driveability sysmptoms related to the EGR valve an turbo performance. Broadcast Messages 5452, 5529.
You should notice an increase in turbo cycling closed/whistling at idle and at stops. This is normal, and is to help keep the variable vanes from sticking."

Hope this helps

 

maybe he can lay his hand on the hood of my truck and tell me for sure if i need to replace the VGT selonoid.

 

being that my truck is out of warranty can i still get the recall done on it at no cost. Also i appreciate you letting me know about that recall.

 

I don't know the specifics of the recall duration, ask your favorite local dealer about it.

 

the local dealer does not fall on the favorite list but i appreciate it