Hello Everybody: This is my first post in the Forum. I have a 2001 Ford Excursion with the V-10 and a recent problem came up. While en-route to the gas station last week the vehicle started to loose power in the pedal. The fuel gauge read .25 of a tank so it wasn't running out. I filled up and the problem didn't change. At best while under load (in drive) the truck will only get approx 2200 rpm before it starts to stumble. I figured it may be clogged fuel filter, changed with no resolve. Friend thought it may be TPS sensor, changed with no resolve. There is no check engine light on, and the cheap scanner said there were no codes. Do I have a fuel pump problem and how can I check to see what pressure the system should have vs what it may be now. Any information would be great. Thanks in advance.

 

sounds like a coil--which one though?--but welcome to the forum, and i'm sure someone with more knowledge will chime in!

 

hmtroman1, welcome to this forum. It sounds like a fuel pump or a coil. Is the rpm guage going up and down? Mine did the same thing and it was the crank shaft position sensor. If this doesnt help try asking this question into the v-10 forum. The people down there are really knowledgable with the 6.8L.

 

I bet your catalytic converter is clogged.

Unhook it at the Y pipe and take your rig for a (loud) spin to test. It'll probably run a lot better.

 

How many miles are on your truck?

 

From the manual. Still got that scan tool?

Turn the ignition key OFF.
Connect a suitable fuel pressure gauge to the fuel test port (Schrader valve) on the fuel rail.
Connect the scan tool and turn the ignition key ON but do not start the engine.
Following the scan tool manufacturer's instructions, enter the output test mode and run the fuel pump to obtain the maximum fuel pressure.
The fuel pressure should be between 30-45 psi (210-310 kPa).
If the fuel pressure is within specification the pump is working properly. If not, continue with the test.
Check the pump ground connection and service as necessary.
Turn the ignition key ON.
Using the scan tool, enter output test mode and turn on the fuel pump circuit.
Using a Digital Volt Ohmmeter (DVOM), check for voltage (approximately 10.5 volts) at the fuel pump electrical connector.
If the pump is getting a good voltage supply, the ground connection is good and the fuel pressure is not within specification, then replace the pump.



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BTW, a OLD mod that was talking about years ago was to boost the voltage to the pump from the 10.5V to 14.2V but adding a relay. Some folks don't have such low voltage to the pump but those who do can boost it up for about $10.

https://www.ford-trucks.com/forums/6...=fuel+pressure

 

Not to be the bearer of bad news or anything, but it soudns alot like what happened to one of our old work trucks. Just happened, 2004 F350, guy was on his way down to Iowa, truck started to loose power, so he pulled over. The truck would run but not very well. turns out the head gasket had blown and filled one of the cylinders with antifreeze siezing it up and forcing the piston into the block or somthing like that. Hopefully thats just a rare occurance and yoru problem has nothing to do with it...

 

Yeah but didn't the driver report gobs of white "smoke" coming for the exhaust? I always thought that was a symptom of a blown headgasket, especiialy of that magnitude.

This fella didn't say anything like that but let's hope not...

Was this a V10 in that F350 that you're talking about?

 

Mine had the same problem, ended up being a fuel pump. Went from virginia to new hampshire. Took forever. Ran fine once got up to speed, but getting it there was tough. And I was pulling a trailer too. made it worse. The engine ran fine on the lower rpm's, but as soon as tried to give it the boot, it would fall on its face. had to baby it up to speed. Was an easy fix though. Just make sure the tank is nealy empty before removing it.

 

yeah it was a V-10, I loved driving that truck. Had a huge crane on it and would still toast 90% of the cars on the road today.

 

Thanks for all your input. The Excursion I have is a 2001 with 90,000. I have it on my list of things to do tommarow to change the plugs, look all the rubber & plastic lines and hoses over, clean the MAF and this should lead me to the fuel system. The good in all of this is that after all of this, the truck won't need a tune up.... When the V10 is running properly, it's a beast.

 

Actually...when did you change the plugs? They really shouldn't go 100K. So what the other guys are saying about the COP may be on track. Usually it is a plug that is bad. I would replace the plugs since you're at 90K. When you change them it'll give you the opportunity to inspect the COPs & boots....ummmm...actually you should replace all the boots when you do the plugs.

 

Yeah 90 K is a long way to go on a set of spark plugs. However, wouldnt it throw a code if that was the case? Who knows i guess?

 

OBDII won't throw codes for many things. Sparkplugs being one of them.

 

What is the best process to change plugs. I don't even remember seeing wires on my v10. Best to work from the top or bottom??? Mine will need it soon. Thanks JOHN