Engine low power?

Hello, I'm Danny.

That's a brand new truck! Something sounds fishy. Did you buy this truck new/used and did it come with warranty?

This guide can help us fix it

https://www.2carpros.com/articles/engine-has-low-power-output

Hope to hear back soon and thanks for using 2CarPros. In the mean time I will look for possible early TSB's (technical service bulletins) issued by Ford. Hope this helps and thanks for using 2CarPros.

Danny-

What is the weight of the RV? And could it be possible that the brakes are dragging due to a bad brake adjustment? If possible I would try to pull the trailer with another gas truck to see how difficult it is to pull.

After more than 20 minutes of city driving or more than 30 minutes of highway travel the trucks rpm gauge begins to surge. In the city at stop lights the truck will bounce between 500 rpms to 1100 rpms. Then as i accelerate there is no engine response. with the gas pedal to the floor the engine is still idling. After i idle to the side of the road and be patient it responds after about 5 minutes. Yesterday same problem occurred except i had to park overnight on roadside and then the following morning it started up no problem. what could be causing this?
On interstate travel the battery light has been coming on whenever I accelerate even the slightest amount. and the batteries were replaced this last month.
Took the truck to Auto Zone for their engine scan services and since the check engine light isn't on they wouldn't scan it. All during these issues the check engine light has yet to come on.

The engine is the 6.0 Powerstroke diesel engine. This also is the turbo engine. The alternator has never been changed in the vehicle.
Matter of fact other than routine maintenance nothing has been changed on the vehicle to my knowledge.
Another issue that I experienced today in addition to aforementioned ones was that the the turbo psi gauge would barely move whenever I would accelerate. Didn't matter whether it was a gentle or hard acceleration it was like the turbo isn't engaging at all. I am at a complete loss as to what is causing this. If it is something as minor as sensors or fuses or a major component failure

Hello,

This sounds like a fuel filter needs to be replaced or the turbo has gone out, Lets try the fuel filter first here are the instructions in the diagrams below. Check out the diagrams (Below). Please let us know what happens.

I did the fuel filter and it helped but it still doesn't have the power when it was new do you think tis the turbo?

The only way you can tell is to remove the inlet or exhaust side of the turbo and check the endplay, if excessive here is a guide to help see what I am talking about with instructions in the diagrams below to show you how to replace the turbo.

Turbocharger - 4C3Z6K682CBRM $1332.44

https://www.2carpros.com/articles/how-turbo-chargers-work

Check out the diagrams (Below). Please let us know what you find.

I have same problem. Yesterday truck would only idle even with peddle all the way to the floor.....then when I turned it off and restarted it idled at about 400 rpm tili it died. I checked the turbo it was shot so I got one from the junkyard, worked great!

Loss of power on acceleration. Turbo runs maybe 5 psi unless I step on it. Then maybe 15-20psi. Shifting funny. I have to release gas to get it to shift after about 3rd gear. Egr valve was cleaned last night but no performane gain. Checked oil and coolant and they are not mixing in eachother. Plastic peice by turbo has small crack where screw is screwed in, but I dont think I would loose that much from it.

Start with getting the pressure side of the turbo checked for leaks, this is often a cause of poor performance in turbo engines, a bad leak will often produce a whistling noise as the turbo spools up and pressure increases.

Sometimes when I back off the accelerator on a good pull and at time on level ground it is like the ignition was turn off and turn back on and a wha wha wha wha sound and loss of power after about ten seconds or less. All power is back and the truck runs fine. Does anyone know what causes this?

Thanks, Bob

Good afternoon.

The first thing I would do is change the fuel filter. A partially clogged fuel filter will cause this.

I attached both styles. There could be a frame mounted one or an engine mounted filter. Both are easy to change.



Roy

Both fuel filters have been changed. I believe the problem is somewhere else. But do not know. Thanks, Bob

Were they just changed?

Are there any codes stored?

My next check would be fuel pressure, high pressure oil pump pressure and catalytic converter check.

Roy

No codes, no dash lights.

Today is Wednesday June 5th 2019 it is 10:39 in the morning I came to a Wertz tractor power equipment to drop off my mower,on my way here my truck stalled as I turn the corner I had no gas pedal action the truck shut down. I immediately turn the ignition back on and a way I went. last night while arriving at my home my truck soon as I park my truck it turned itself off. I've had this problem in the past when the turbo was hooked up the mechanic at the dealership said the turbo was fine yet it was he did not tell me it was unplugged. one day I plugged it in the very next day I had big problems my truck stalled choked and you push on the gas pedal and nothing happened. I sat there for fifteen to twenty minutes started it back up it would go for a couple minutes and then start acting all crazy again. so why unplugged the turbo at that point in time everything went back to normal,however today turbo is not plugged in and all those symptoms are happening all over again. the lady above Miss Rose I read her story and the answers that were given. so I'm going to try a couple of your the answers that were given.

You have to start somewhere.

I would start with the filters, fuel pressure test, oil pressure test and catalytic converter test.

You will need an advanced scan tool to do these checks except for catalytic converter back pressure test and the filters.

Roy

Hello,

It sounds like the truck is going into limp or safety mode due to a dirty throttle bore. here is a guide I would try first, also lets run the codes to see what comes up:

https://www.2carpros.com/articles/reduced-power-limp-mode

and

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down these guides and report back.

I will get them check out. Thanks again, Bob

You are welcome.

Keep us updated.

Roy

Will do.

some type of fuel problem. truck loses power spits and sputters then returns to normal.

Check fuel pump pressure. For directions, go to our homepage under the DIY section. Also, if the check engine light has come on, have the computer scanned to identify what trouble code is set. Most parts stores will do it for free.

engine did not stall all at once. gradually shuts down at first,but now wont start at all. new batteries,alt ok. changed oil and filter.

I just saw that happen with a ford box truck. Turned out to be an oil passageway that blew a plug which resulted in low oil pressure which kept the truck from running. I don't work on diesels too much but that's what I think I know about that one at least.

thanks for your info. jccr.

I've had the truck to different dealers in different states all thought they fixed it but after many thousands of dollars it's still doing the same thing. Why can't the ford certified mechanics figure out what's wrong with my truck. What can I do now ?

Has anyone ever given the trouble codes they retrieved?

Has anyone looked at the catalytic coverter? Often times the honeycomb breaks loose, and there is intermittent struggling while the ball of platinum/steel rattles around clogging the exhaust.

F250 '02 triton 5.4L Sudden loss of power door locks, intermittent dome lights, door ajar indicator stays on while truck is running, radio stays on. Battery was removed and replaced to repair reservoir bucket...the terminals were ck'd, tightened, fuses ck'd, plugs behind the fuse box also ck'd ??? what else can we ck or what may have caused this malfunction all of those things were working fine

have you checked the fuses / relays under the hood?

do you know where the time delay is for the overhead lights

time delay?

Sorry, I had to think for a second. That is a relay.

Engine seams to run on one bank at a time, switching after running for a short time. Fuel pressure is good, no codes on scanner. Was driving from Kentucky to Montana and this started about half way last night. Have pulled the valve covers and wiring connectors are good, changed fuel filters.

relay turns on and off a time delay is different from a regular relay

Hello,

This sounds like you may have a catalytic converter that is starting to plug up. Here is a test to help you see if that is the problem.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter


Please run this test and get back to us so we can continue helping you.

Cheers, Ken

My truck quit accelerating about a week ago. I replaced a fuse and it started working again. It happened again but this time no fuses are blown. I have no accelerator pedal or gauges. I was told to check the shifter lever and the wiring was rubbed and shorted. I replaced it with a new one and still nothing. I do not know what to check anymore. I need help.

First thought that there is a wire that is broken under the dash, the reason I think that is at first it blew a fuse, that meant there was a short. then after replacing the fuse the truck ran. then it happened again, what I think is that there is a wire hat had shorting out and then finally broke under the dash. start at the fuse box and work your way to the ignition switch checking all the wiring.

I have a 2002 Ford F-250 Gasoline. While driving it loses power. Can be driving 60 mph then gradually loses mph down to 30 or less; try to give it gas and it will not go.

Possibilities here could be the throttle position, mass airflow, cam and crank sensors to include the vehicle speed sensor-also check fuel pressure if its within specs