U0306
Thread Starter
|
Mountain Pass
Joined: Jun 2020
Posts: 146
Likes: 17
From: Virginia
U0306
Good morning Fellas! So last night I get a call from one of my crew members and says that our 6.0 kept shutting off on him. He had it running for 5 hrs at idle as they were drilling under ground. He got it running but could not go faster than 50mph on the highway. Scanned it this morning and the only code I have is U0306. Test drove and only goes about 50mph with a load in the rear. I cant seem to find a diagnostic check list for that code. It wont even come out on alldata. My battery voltage is good. Ficm is showing 48V ,12 ,12. I replaced this ficm back in may so its under warranty. Could My PCM be messed up?
I searched on the forum and saw a thread back and July but there was no diagnostic steps or a solution or fix. Sorry if this is another repeat!
I searched on the forum and saw a thread back and July but there was no diagnostic steps or a solution or fix. Sorry if this is another repeat!
More Turbo
Joined: Dec 2012
Posts: 538
Likes: 151
From: Warsaw KY
Thread Starter
|
Mountain Pass
Joined: Jun 2020
Posts: 146
Likes: 17
From: Virginia
No smoke. I drove it as well and it did the same to me. Was going 70mph and then it started to slow down with the pedal to the floor. HPOP was still in the mid 2000 range. Pulled over and it shut off. Wouldnt start for another 4 mins. I popped the hood, I turned ignition on and noticed my fuel psi gauge on the filter was still saying zero until I cranked it for 3 seconds I saw the gauge rise and it started. So im thinking rail pump issue?
Thread Starter
|
Mountain Pass
Joined: Jun 2020
Posts: 146
Likes: 17
From: Virginia
No idea how many miles. I dont know if the previous mechanic replaced. I know he loved carquest parts. My fuel psi gauge is on the fuel filter housing so no...Might have to transfer
Trending Topics
More Turbo
Joined: Apr 2007
Posts: 695
Likes: 78
From: Almost Heaven
IIRC, Jack had a poll on hfcm failures. Somewhere around 180k??? I recently pulled my cover and remove the goo. May b worth a look, especially if you have the fuel heater. Great thread below on how to put the screws/bolts back in.
Defiently transfer.
Defiently transfer.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Thread
Thread Starter
Forum
Replies
Last Post
rtazz17
1999 - 2003 7.3L Power Stroke Diesel
4
Dec 31, 2009 05:06 PM