Boost gauge problem

Reply Subscribe

Thread Tools

Search this Thread

Oct 1, 2004 | 09:03 PM

Scott KY

Thread Starter

New User

Joined: Apr 2004

Posts: 7

Likes: 0

Boost gauge problem

I recently had a hypermax combination pyrometer and boost gauge installed in my 97 PSD. The boost gauge needle flutters rapidly between 10 and 15 when I accelerate hard. The line that runs to the boost gauge tee's off of the rubber hose that goes to the map sensor. Any ideas why the gauge fluctuates so much?

Oct 1, 2004 | 10:55 PM

Kwikkordead

Fleet Owner

Joined: Jun 2004

Posts: 25,090

Likes: 1,112

From: Rio Rico, AZ.

Is the fluctuation accompanied by a pulsing sound coming from your intake? If so I suspect compressor stall. But from what I have been able to gather through reading lots of posts here you have the good compressor wheel. So I don't know for sure here.

Oct 1, 2004 | 11:15 PM

FoMoCo136

Tuned

Joined: May 2003

Posts: 303

Likes: 2

From: Kentucky

My 2003 will do it. I need a Wicked Wheel!!

Oct 1, 2004 | 11:25 PM

Kwikkordead

Fleet Owner

Joined: Jun 2004

Posts: 25,090

Likes: 1,112

From: Rio Rico, AZ.

Quote:

Originally Posted by FoMoCo136

My 2003 will do it. I need a Wicked Wheel!!

I HIGHLY recommend doing that. I just did it to mine and the new sound is well worth the expense. All traces of intake chuffa chuffa chuffa sound are gone and replaced with a

making semi truck turbo whine. And the exhaust flutter is greatly reduced too somehow.

Oct 1, 2004 | 11:36 PM

FoMoCo136

Tuned

Joined: May 2003

Posts: 303

Likes: 2

From: Kentucky

My trailer will kill my turbo if I don't do it. Mine is about 10,500lbs and climbing hills the turbo chug is much more of a concern than temps. I gotta lift to get the noise to go away.

Oct 4, 2004 | 10:53 AM

Silverrv

Senior User

Joined: Jun 2003

Posts: 141

Likes: 0

From: Midwest in Harry's Town

Tell me more about this Wicked Wheel..??

Oct 4, 2004 | 09:40 PM

Kwikkordead

Fleet Owner

Joined: Jun 2004

Posts: 25,090

Likes: 1,112

From: Rio Rico, AZ.

Quote:

Originally Posted by Silverrv

Tell me more about this Wicked Wheel..??

You could end up with a whole evening's worth of reading if you did a search on it. Long story short: 99.5-2003 7.3 liter PSD Ford's were equipped with a type of turbo intake wheel that is very inefficient at certain times. They make a stacatto chuffing noise when pulling heavy loads uphill full throttle at around 2000 rpm. The cure is to install the "Wicked Wheel" which is basically the same turbo compressor wheel as the earlier PSD engines had.

Top 10 Fords at 2026 Carlisle Ford Nationals

Joe Kucinski

3 Best / 3 Worst Parts of Modern Ford Ownership

Brett Foote

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

Pouria Savadkouei

Every 2026 Ford Engine Explained

Brett Foote

10 Ugly Ford Trucks That We Still Kinda Love

Joe Kucinski

10 Things Every Truck Owner NEEDS (2026 Edition)

Michael S. Palmer

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Verdad Gallardo

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Joe Kucinski

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Brett Foote

Top 10 Ford Truck Tragedies

Joe Kucinski

Oct 5, 2004 | 06:42 PM

Fire Rooster

Posting Guru

Joined: Feb 2004

Posts: 1,873

Likes: 1

From: Phx, AZ

I would closely inspect your impeller for any bends or breaks in the veins. It sounds as if the impeller has an imperfection to it. Because your stock impeller on that year should not stutter. Remove the intake boot right next to the turbo and take a looky.

Fire Rooster