Self Diaganostic Test!!!

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Oct 11, 2007 | 09:04 PM

WesternFord

Thread Starter

Junior User

Joined: Oct 2007

Posts: 51

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Self Diaganostic Test!!!

Hey guys,

I was looking at the Ford Fuel Injection site on how to do a self diagnostics test. I have a 1991 Ford F250 351W and i cannot find the little grey single pin Self-Test Input (STI) on the truck.... Can anyone help me??

Here is a link to the site.
http://fordfuelinjection.com/?p=13

I was just thinking that maybe its hidden, and some of you have found it.

Also, how else do you check codes besides this method described at Ford Fuel Injection

THanks guys

Oct 11, 2007 | 09:28 PM

quicklook2

Post Fiend

Joined: May 2004

Posts: 11,289

Likes: 6

From: Lakewood, Ohio

it is under the hood.

Oct 11, 2007 | 10:22 PM

brown637

New User

Joined: Sep 2007

Posts: 13

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From: Tville GA

I should be next to the brake master cylinder, mounted on firewall with word "test" embossed on top. it kind of looks like a relay.

Oct 12, 2007 | 06:42 AM

92F150Flare

Elder User

Joined: Feb 2007

Posts: 829

Likes: 1

From: Goose Creek SC

On my 92 they are on the drivers fender, inside, almost at the firewall, pretty much under the hood hinge. The connectors are pushed up into holders and have to be pulled down to use. And, of course, they have Ford's locks to hold them in.

Welcome to FTE and you can buy a code reader at Advance for $30 that made it a lot easier for me to check codes. I had a helluva time counting and understanding the blinks. But.........I'm old.......

Good Luck
Bob

Oct 12, 2007 | 10:10 AM

WesternFord

Thread Starter

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Joined: Oct 2007

Posts: 51

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Thanks 92F150Flare, i'll look for it later today.
Thanks for the help.

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