99 Ford Super Duty 7.3 w/Turbo Loss of Power
 

I have a 1999 Ford Super Duty 7.3 w/ Turbo. I noticed that the engine is starting to run rough and starting to loss power. The oil and temp. are running fine. How can you tell if the turbo is working or not. Can someone please help me fine the problem. There is no smoke. I did have to have the number one injector replaced about 3months ago. PLEASE HELP

check uvch's maybe time for new fuel filter? just two of the easier things it could be maybe

When's the last time you changed the oil??

The fuel filter,air filter and oil was changed on June 2,2010 Can you tell me want UVCH means.

It's the harness under the valve cover. It stands for Under Valve Cover Harness. But I don't think it's your UVCH. Do me a favor. Unplug your injection control pressure sensor.

http://ww2.justanswer.com/uploads/fo...nd_icp_7.3.jpg

Let me know how your truck runs. Also, how much oil is on the plug.

Can you tell me were the ICP is located.

On my truck with loss of power. I took the truck on a trip this weekend with the LQ horse trailer. I ran fine on flat road. But going up grades in Neveda the turbo would work only part of the time Can someone PLEASE help me with this problem on the turbo why it would only work sometimes.

im waiting for the outcome

I unplug the icp and it did not make a diffence there is very little oil on it

Again, when was the last time you had a oil change? It could be dirty oil or even be low on oil.

The oil and filter was changed Oct.8,2010 and the oil is full. Any other ideas what might be the problem

Check ALL of your turbo oil lines. If they're so much as partially plugged, you'll feel a loss of power.

Ok,Can you tell me what oil line to look for Please let me know

I'm honestly not sure as I've not had this problem. You could check a maintenance manual and see.

map sensor
 

you could have a bad map sensor, I experienced loss of power, no boost, and a check engine light from a bad map sensor.

Ok, still have the same problem no power. I have replaced two injectors , replaced map senor,replaced ICP sensor. Changed oil,oil filter replaced fuel fitler and air filter. checked connections on gaskets for injectors. I still have no power. Is there anyone that can tell me what else it might be.

Did you ever find the problem?? Mine is doing the same thing.

Hi I still have not found the problem if you come up with anything let me know.

ok. do you know any one with a scanner? or go to a diesel shop or hell. even autozone can do it for you. get it scanned for codes. it could be the map sensor. my 94 did that and it ran terrible.

I have a scanner. The only code that came up was 1391 and I took care of that.

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How can I check to see if the map sensor is bad. What type of test can I perform on the sensor ?

Team01, I don't come here much, but I'd be glad to help any of you who are having this problem. Just email me @ Jeret.Howard @gmail.com and I'll walk you through what all to do.

Unplug the electrical connector. If it runs better, you have found your problem.