99.5 F-350 High rev, little power

[Mamps]

First off, let me say that I stumbled across this site by trying to google my other Powerstroke forum that I belong to. This site is awesome. Everyone wants to help without making you feel like a dumb a$$.

I have a 4x4 99.5 F-350 7.3 all stock, no chip, no gauges. Has 140k miles. Truck has been running great. Went to get on the freeway today and accelerate off the on ramp and RPM goes up but truck bogs. Let off the gas pedal and it slowly builds up to speed. Now it does it any time, any speed.

I got a fuel filter on my way home and went to change it and found that the bowl had a lot of debris in it. Took the bowl out of the truck, noticed that the heater element was broke from the plate so replaced that and the o-rings/sleeves on all four lines. (posting my trobles with the sleeves in another post)

Put everything back together and fired it up, test drove and same problem.
The truck fires up with no problems, idles perfect (by sound only...no scanner) and shifts in and out of gears fine, 4x4 works as it should.


Any ideas? Anyone in the Columbus Ohio area that has a AE scanner that I could pay to scan when running to see injector report?

Having some rough times with this truck, just had to spend $2200 at the dealer to have the pan replaced and oil service along with tranny filter. My wife is ready to make me start riding my bike

[Mamps]

Still looking for some help.
Updates since last post
It is an issue that comes and goes. Went a week without any trouble and then started up again.

It does not matter if it is wet or dry out still acts up (possibly eliminate shorting out from water?)


I took the EBP sensor and tube off. Had to get a new tube and cleaned everything really well. Put everything back together and ran fine (coincidence I think) for a while and then acted up again yesterday. It takes a really long time to get up to speed and there is very little power. I am going to try to test the boost for leaks today (going to make a tester)

I am thinking that it is either boost issue or possibly low fuel or oil pressure. Any ideas how I can test fuel and oil pressure without expensive tool testers?

Begging for some help here! Desperate and just about willing to do anything to get some advise (NOT THAT DESPRATE YET SICKOS)

[melmount]

my ipr nut came off(basically unhooking) and the ipr was acting funny. I did not know what it was while driving but i could step on the gas and big hesitatons before it went anywhere. Bogging etc.

[Mamps]

Is the IPR located behind the HPOP? Sounds like it is well worth the inspection, Thanks!

[Buffalo444]

Im guessing it just bogs down when you press the go pedal? doesnt sound like boost, cuz if it was boost you would ONLY notice it under a load or WOT accelleration. I'm gonna go out on a limb here and say it sounds like fuel pressure. If your injectors dont get the fuel they need, they're definately gonna bog down. But if it IS fuel pressure you want to get it taken care of right away, air in injectors can eff stuff up.

Also I'm gonna go out on another limb and say your other forum was powerstrokenation or *************?




Why the eff is Diesel B0mbers blocked?

[melmount]

yes down bottom drivers side Make sure the skinny lock nut is tight and everything is not sliding around

[Mamps]

Originally Posted by Buffalo444

Also I'm gonna go out on another limb and say your other forum was powerstrokenation or *************?

Uh, No comment other than you are correct.

Thanks for the advise. Any simple or I should say inexpensive way to test fuel pressure? I do not want to buy a pressure kit for just this but sounds like I may have to. Also, would it be possible that they fuel pump is going bad? Or is it either works or does not work?

[Mamps]

So I just got done checking boost and I do not think this is where the problem is. It held at 16psi pretty good and no visible leaks with soap and water. I did notice a drop or two of oil in the bottom of the intake pipe coming of the filter box. Not sure it is enough to worry about but thought I should mention.

I did take the fuel bowl apart to see if there was any debris or excess water in but it was clean as can be.
I do not have a fuel pressure tester so can not test pressure from bowl. I also checked IPR nut and it was snug.


At this point, I am considering buying Auto Enginuity and a laptop (used) to scan it when running. Very tight on cash and I hate to do this if it will not tell me fuel or oil pressure...any advise?

Better yet, is there anyone in the Columbus Ohio area that is a powerstroke specialist that I can take it to and let them service it. I have had it to several dealers for other issues and very disapointed with their diagnosis (way off)...i.e Rear main seal needed replaced when it was HPOP gasket etc.

Or my best solution would be if any of you younger guys could lend me some hair to pull out! I already pulled all 3 of my remaining hairs out trying to figure out what to do.

[Buffalo444]

Originally Posted by Mamps

Uh, No comment other than you are correct.

Thanks for the advise. Any simple or I should say inexpensive way to test fuel pressure? I do not want to buy a pressure kit for just this but sounds like I may have to. Also, would it be possible that they fuel pump is going bad? Or is it either works or does not work?

I think you'd either need that or just to install a fuel pressure gauge, which I would do just to constantly monitor it.

Originally Posted by Mamps

So I just got done checking boost and I do not think this is where the problem is. It held at 16psi pretty good and no visible leaks with soap and water. I did notice a drop or two of oil in the bottom of the intake pipe coming of the filter box. Not sure it is enough to worry about but thought I should mention.

I did take the fuel bowl apart to see if there was any debris or excess water in but it was clean as can be.
I do not have a fuel pressure tester so can not test pressure from bowl. I also checked IPR nut and it was snug.


At this point, I am considering buying Auto Enginuity and a laptop (used) to scan it when running. Very tight on cash and I hate to do this if it will not tell me fuel or oil pressure...any advise?

Better yet, is there anyone in the Columbus Ohio area that is a powerstroke specialist that I can take it to and let them service it. I have had it to several dealers for other issues and very disapointed with their diagnosis (way off)...i.e Rear main seal needed replaced when it was HPOP gasket etc.

Or my best solution would be if any of you younger guys could lend me some hair to pull out! I already pulled all 3 of my remaining hairs out trying to figure out what to do.

Oil in the intake/intercooler is ford's muck up of the crank case vent, no big deal. I dont think AE will tell you fuel pressure but it should be able to tell you oil pressure. Somebody should chime in on if you have any good local mechs, but if not just ask around your area's subforum.

[Mamps]

Okay, so the situation gets worse

At dinner, the mega millions lottery comes up and the kids ask my wife and I what the first thing we would do if we won the 201 million jackpot
My answer was to take my truck in and get it fixed correctley.
My smart *** wife's answer...
I would get daddy a Chevy truck so that he has something reliable to drive when going to the parts store to fix his Ford"

That sucks!!! What am I to say.