Pulling codes

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Jun 3, 2004 | 08:22 PM

daddydcs

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Pulling codes

Can anybody tell me how to pull codes for the late 80's EFI. I have an 87 302 Bronco EFI that I want to pull the codes on. I have located the two plugs (the STI single prong plug and the STO six prong trapezoid plug) and just need which to cross/ground for the codes. Thanks!

Jun 4, 2004 | 01:45 AM

c96drumm

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From: Colorado, U.S.A!

Try here: http://fordfuelinjection.com/index.htm

Jun 4, 2004 | 04:17 AM

daddydcs

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thanks, I tried that site but they say to only ground the STI (single prong) to the battery. This doesn't produce any tests/codes. Someone else told me they thought he must have left a step off.

Jun 4, 2004 | 07:27 AM

jwtaylor

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Get a haynes manual, describes it perfectly or go to autozone they will do it for free.

Jun 4, 2004 | 03:50 PM

EPNCSU2006

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From: Concord, NC

Jump between the STI (the single wire) and SIGRTN, (the upper left in the big harness - it's a black wire with a white stripe). Then run a volt meter between the STO (the one below and to the right of SIGRTN) and the positive battery post. If your '87 is like mine, you will have to use a volt meter because the check engine light inside the cab is not connected.

Jun 4, 2004 | 08:26 PM

daddydcs

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Thanks! Will try it this weekend... and now that you mention it, I don't think my 'check engine' light is hooked up either (only the 'engine' light for the oil).

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