Truck is running rough

[GilroyRacing]

I started my truck the other day and after running for about 20 seconds the CEL came on and it started running really rough. I cut the truck off, let it sit for a minute,then started it again. After I restarted it the second time, it did the same thing, it started right up, then instantly the CEL came on and it wouldnt go out. I drove it down the road and it still stayed on. The truck ran like crap, it wouldnt get out of its own way, and had zero boost.


I plugged it to the scanner, and the first scan came up with:
P0236 Turbo Boost Sensor A Circuit Performance

than I did a buzz test on the injectors and came up with this:
P0273 Injector Circuit Low - Cylinder 5

What do you think will cause these problems, and what should I do to fix it?



thanks,
Justin

 

[Mike]

I would guess it is a burnt UVC harness.

 

[GilroyRacing]

The UVCH were replaced about a year ago. I will check them though and see if thats what it might be...

Let me know what else you guys think it might be.

 

[Russ]

IDM?

 

[Mike]

The UVCH were replaced about a year ago. I will check them though and see if thats what it might be...

Let me know what else you guys think it might be.

ICP sensor.

 

[GilroyRacing]

IDM?

Where is the best place to get an IDM? and how much do they usualy cost?

 

[Double-S-Diesel]

236 is probably due to the 273

as for the 273 , by the book, calls to be a shorted harness, uvch, bad injector, or bad idm.

just because ya replaced the uvch doesnt mean that it couldnt have failed.

 

[GilroyRacing]

NVM, just found both on ebay.....

 

[GilroyRacing]

236 is probably due to the 273

as for the 273 , by the book, calls to be a shorted harness, uvch, bad injector, or bad idm.

just because ya replaced the uvch doesnt mean that it couldnt have failed.

I am out of town right now, but as soon as I get back I am going to check the UVCH. I am hopping that is the problem.

I am going to start there, then I guess pull the number 5 injector and have it checked out, if it looks ok, then I guess I will have to get a new IDM....

 

[Mike]

Tell us you have checked the oil level and it is A-OK.

 

[GilroyRacing]

Yep, I just changed it 300 miles ago.

 

[JLDickmon]

Yep, I just changed it 300 miles ago.

what oil did you use?

 

[GilroyRacing]

Royal Purple 15w40, I've been using it for the last 26,000 miles.

 

[GilroyRacing]

I got a chance today to take a look at the truck, and I have figured out what was wrong.

As soon as I unpluged the harness I noticed that the harness coming off of the motor was burnt.

Here is a pic of it:

You must be registered for see images attach

I called ford and I got the UVCH and I got the connectors that were inside the valve cover (Ford PN F4TZ9D930K) cause they were burnt as well.

The part that I need now is the connector in the pic above. It is the connector that plugs into the UVCH does anyone know the part number from ford so I can order 4 of them?

Please let me know thanks

 

[Mike]

The part that I need now is the connector in the pic above. It is the connector that plugs into the UVCH does anyone know the part number from ford so I can order 4 of them?

Please let me know thanks

Valve Cover Harness Repair Kits (contains 4 hard shells w/seals, w/o terminals)
(Ford) F7TZ-14489-BA (94-96)
(Ford) F7TZ-14489-AA (97)
(International) 1830829C91 removal tool and Shells w/o pins
(International) 1661875C1 Pins
(International) 2501055C1 Pins with 6" wire