My guess is a bad connection or wire at / to the ICP sensor ...

P1280 – Voltage less than 0.04 volts.
P1281 – Voltage greater than 4.90 volts.

 

I think it may be the connection too, Jim. Does the post 97 7.3 have them too? If so, will it work? I am thinking of a junkyard run w/wire clippers. What do you all think?

 

All PSD Have a ICP 94.5 to 97

 

I was hoping the 97 and up....do the "newer" 7.3's have the same? Are they interchangable?

 

If need be.

ICP Connector
(International) 2501105c1 (also EBPV Connector)
ICP Sensor
(Ford) F4TZ-9F838-A (94/95)
(Ford) F6TZ-9F838-A (96-up; marked Julian date 6318 or higher)
(International) (94/95) 1830669C92 $128
(International) (96-up) 1807329C92
ICP O-ring (Same as HP plugs and hoses)
(International) 1815874C1

 

yes sir ............

 

Try not to spend too much on the test.

It may be the IPR .

 

I thought an IPR would be a diferent code. Is that not always true?

 

The Code points to the ICP sensor Or wiring for sure, .I have only read about it , but a sticky IPR can smooth out when ICP is unplugged (Diesel mans page )

 

Update.
I drove about 7 miles to my buddies house this morning with the ICP still unplugged, no problem.
I connected the ICP again and drove another 55 miles or so with firewood, with no problems.
I switched tanks on the way home and about 2 miles later it started to act up again. I switched back to the front tank and it INSTANTLY straightended out, COINCIDENCE????....I mean INSTANTLY! If it was fuel related I wouldn't think it would throw that code?
I still have it plugged in and on the front tank with no problems at the moment.
Any thoughts?

 

Sounds like you either have a plugged or cracked fuel pickup, or your 6 way selector valve is going wonky.

 

I was leaning towards that too, Nate. But would that throw a 1280 code?
When I switched tanks the result was INSTANTLY, I mean down to the micro-second....I think it may have been coinicedence, I dunno.

 

I think what I am going to do is find a new ICP harness (connecter with about 6" of wire) and rebuild the IPR. Can anyone lead me to a good parts/rebuild link? When I start this project in about 2 weeks, I will start a new thread.
Thanks!

 

Wow those kits are expensive!. Here is the cheapest kit I saw.

Ebay listing.

 

Thanks Pete! Perhaps I will check the Junkyards a few times and see what I can find. Or do you think I should go with new stuff.