Slobbering
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Slobbering
So the lesson here is don't plan a long trip on a holiday weekend.
My '01 7.3 has decided it didn't like to pull up a hill. We are pulling a fifth wheel RV and when we get a long hill it will start to miss like it only has 4 cylinders. If I let it slobber along at about 20mph on the shoulder for a while it will clear up and run again until the next hill. Runs great on the flat, 70mph no problem.
We are sitting in Alberqueque, NM on our way to western Colorado with plenty of hills in between. No body to work on it until Tuesday.
Any ideas? Fuel pump, injector pump, fuel filter, cat?
My '01 7.3 has decided it didn't like to pull up a hill. We are pulling a fifth wheel RV and when we get a long hill it will start to miss like it only has 4 cylinders. If I let it slobber along at about 20mph on the shoulder for a while it will clear up and run again until the next hill. Runs great on the flat, 70mph no problem.
We are sitting in Alberqueque, NM on our way to western Colorado with plenty of hills in between. No body to work on it until Tuesday.
Any ideas? Fuel pump, injector pump, fuel filter, cat?
Post Fiend
Joined: Feb 2007
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From: Dallas-Ft. Worth
LOL... I was wondering what I was going to find in this thread from the title...
It would be a lot of things. I'll take a guess that you don't have gauges, right? Was there a CEL? If so, find someone that can read PowerStrokes (no, the plain-Jane Auto-Zone readers won't do it). If you can get us codes, we can go from there.
Oh, and welcome to FTE!! We're a pretty helpful bunch.
I know we have a member or two in Albuquerque -- maybe one of them will chime in...
It would be a lot of things. I'll take a guess that you don't have gauges, right? Was there a CEL? If so, find someone that can read PowerStrokes (no, the plain-Jane Auto-Zone readers won't do it). If you can get us codes, we can go from there.
Oh, and welcome to FTE!! We're a pretty helpful bunch.
I know we have a member or two in Albuquerque -- maybe one of them will chime in...
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Joined: Feb 2009
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Sorry to hear about your situation. Is it chipped? Check engine light?
Have you tried any of the following?
- CPS
- HPOP reservoir level
- Fuel Filter
- Under Valve Cover Harness
- Can you here the pump when you turn the key?
Edit - Dang it Izzy, your always on it....
Have you tried any of the following?
- CPS
- HPOP reservoir level
- Fuel Filter
- Under Valve Cover Harness
- Can you here the pump when you turn the key?
Edit - Dang it Izzy, your always on it....
Last edited by Riffraff Diesel; Sep 6, 2009 at 03:43 PM. Reason: slow
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Thanks for the quick reply.
I always get the "service engine soon" light when I get on it hard. Stays on awhile and then will go out if I'm not towing.
It is chiped but I don't have any info on it. We bought the truck this spring with 130k on it and the chip was in it. The seller said it was only 45hp. Just has a **** on the dash...nothing more.
Fuel filter was changed about 3k ago but that probably doesn't mean much.
I do hear the fuel pump for a few seconds when I turn the key.
I always get the "service engine soon" light when I get on it hard. Stays on awhile and then will go out if I'm not towing.
It is chiped but I don't have any info on it. We bought the truck this spring with 130k on it and the chip was in it. The seller said it was only 45hp. Just has a **** on the dash...nothing more.
Fuel filter was changed about 3k ago but that probably doesn't mean much.
I do hear the fuel pump for a few seconds when I turn the key.
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I would have to disagree with it being because of poor programming. You get a P1211 because the HPOP can't provide the pressure that the programming is calling for. That can be due to a pump that is getting tired or because it is a high horsepower tune that is just asking to much. This can happen with any of the tuners that I am aware of.
Posting Guru
Joined: Jan 2007
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From: Millersburg, OR
did you notice anything with your engine temps?... sometimes if the truck gets real hot pulling a hill... like 260 range it will go into a limp mode. The truck will fall flat on its face by limiting ICP. I don't think it is your issue... but if you have a stuck thermostat or you are low on coolant then it could be hot... you wouldn't even notice this unloaded cruising... but with a trailer you would.
I hate to ask this... did you check the oil level?
I hate to ask this... did you check the oil level?
Tuned
Joined: Dec 2008
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From: San Diego, Tx
I would have to disagree with it being because of poor programming. You get a P1211 because the HPOP can't provide the pressure that the programming is calling for. That can be due to a pump that is getting tired or because it is a high horsepower tune that is just asking to much. This can happen with any of the tuners that I am aware of.
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slobbering
Thanks for all the replies.
The oil level is full, pressure is normal.
Temperature never goes above normal. Coolant level is full.
I'll just have to see what the local Ford dealer says on Tuesday.
The oil level is full, pressure is normal.
Temperature never goes above normal. Coolant level is full.
I'll just have to see what the local Ford dealer says on Tuesday.
Post Fiend
Joined: Mar 2007
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From: Texas
How much does the engine shake when this happens? If it truly feels like it's just firing on 4 cylinders, then I'd suspect a loose plug on the UVCH, which you might be able to check with an ohm meter.
If your problems only happen while towing up hill, and it feels like the engine just loses power and maybe running out of fuel, then Clux has the best guess. The screens inside the mixing chamber (inside the fuel tank) are plugged up and the restriction under load is causing the problems.
How full is your tank and can you drop it where you're at?
If your problems only happen while towing up hill, and it feels like the engine just loses power and maybe running out of fuel, then Clux has the best guess. The screens inside the mixing chamber (inside the fuel tank) are plugged up and the restriction under load is causing the problems.
How full is your tank and can you drop it where you're at?