I HAVE A QUESTION. IF MY TURBO VIENS ARE STICKING CAN I JUST SPRAY WD 40 IN IT TO LOOSEN IT UP? WHILE ITS NOT RUNNING. INSTEAD OF PULLING IT OFF RIGHT NOW? I TOOK IT TO THE DEALER AND THEY SAY IM NOT GETTING BOOST. I GET BOOST ONLY IN 3RD GEAR WHEN I FLOOR IT.

 

Like most things in life; you'll get out of it what you put in to it... Personally, I'm not sure it won't make matters worse.

 

The moving vanes are on the exhaust side. So you would have to take off your down pipe and try spraying into housing.

 

ok thanks. by the way is there any chance you guys might have a pic of MAP sensor hose and EBP tube so i can clean them. im not sure where they are i cleaned my egr and put it back in and still the same. someone suggested that i clean those items also but dont where they are located thanks.alpine

 

<hr> Exhaust Back Pressure Sensor ^{Printable View (67 KB)}

Removal and Installation

1. CAUTION: Make sure the ignition switch is in the OFF position prior to working on the electronic engine controls.
   Turn the ignition switch to the OFF position.

1. Disconnect the electrical harness clip and disconnect the exhaust back pressure (EBP) sensor electrical connector.

• 

1. Remove the EBP sensor.

• 

1. To install, reverse the removal procedure.

<hr>

<hr> Manifold Absolute Pressure (MAP) Sensor ^{Printable View (58 KB)}

Removal and Installation

1. CAUTION: Make sure the ignition switch is in the OFF position prior to working on the electronic engine controls.
   Turn the ignition switch to the OFF position.

1. Disconnect the manifold absolute pressure (MAP) sensor.
   • Disconnect the pressure hose.
   • Disconnect the electrical connector.

• 

1. Remove the mounting screws and the MAP sensor.

• 

1. To install, reverse the removal procedure.

<hr>

 

The 03 motor has the exhaust back pressure sensor taken out of the strategy.

 

Pulled my turbo off last week during spring break and cleaned the rust out. It sat for a year after it was totalled (before I bought it) so the veins were hanging up at times on rust ridges. It cleaned up nicely, but it was definitely the most cursing I've done working on a vehicle. The turbo is just no fun at all to remove and reinstall. If I do it again, I'll pull the cab, do a cat back exhaust, EGR delete, head gaskets and studs, anything that is near the back of the engine.

 

Brickie -

I thought I read that the 05 had the EBP taken out of the strategy. There is a flash for the 03-04 to take the EBP out of the strategy, but you need to have the flash applied to do so.

Did I just dream this - I really can't recall for sure? I guess it is too late to recall where my notes on this are!

 

Actually, just the '03 and early '04 remove the EBP from the strategy.

Mark

 

Feb 06 recall had all trucks built before 9/29/03 ditch the ebp.06e17

 

Thanks Brickie and 4x4 Mark .......... I guess I was off a little! - the TSB is copied below:

What I couldn't see very clearly from the TSB wording was (since it was a Feb 06 Update), did they leave the EBP IN the strategy on all vehicles after build 9/29/03 (which I believe included some early 04 model builds). I guess they did, so looks like I am wrong on the remembering of another change in the 05/06's to take it out.

edit:
looks like they added a new EBP sensor to the list of changes in the 03-05 models (and 06 and 07 also I presume).
2003-05 Various Running Problems, Check Engine Light; New EBP Sensor: Part number 4C3Z-9J460-A. Broadcast Message 3815.

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.

 

A non-vgt turbo is much easier to get in and out of there and significantly lighter as well. Plus you don't have to worry about sticking vaines. I know when I had to swap out my factory turbo for an 03 turbo that wasn't fun and then getting the 03 turbo out for the non-vgt one wasn't any better. Now this one is a practical joy.

For the OP, you are going to have to pull it though, just the best way to get it going right.