1986 codes
Pro
Joined: Aug 2020
Posts: 648
Likes: 126
From: Liliha Bakery stuffing my face with coco puffs!
Without shorting anything, just key on engine off, does the check engine light come on at all? Possibly bulb is burnt out or previous owner removed. With A and B shorted key on engine off, you should get at the minimal check engine light 1 flash followed by 2 flash, repeat... The fan coming on may be a good sign that it's in diagnostic mode.
Thread Starter
Heel & Toe
Joined: Jun 2022
Posts: 18
Likes: 0
So not certain if I am doing it correctly. With just the key partially on I get nothing. I have to turn it partially on to where you would turn over a little more and engine cranks. I might be turning it on too far but with the key just partially on it get nothing at all no lights or anything.
Melting Slicks
Joined: May 2014
Posts: 2,897
Likes: 592
From: New Port Richey FL
Just turn to run if it cranks a bit No Point No Fowl just let go of key, is the Service Engine/Check Engine light on? Yes or No
as mentioned with A/B jumped a code 12 should flash followed by trouble code if no code it will go with a code 12 after a pause
https://images.app.goo.gl/i8KEYBV7zyVGT8ts5
as mentioned with A/B jumped a code 12 should flash followed by trouble code if no code it will go with a code 12 after a pause
https://images.app.goo.gl/i8KEYBV7zyVGT8ts5
Thread Starter
Heel & Toe
Joined: Jun 2022
Posts: 18
Likes: 0
Short it out and turn it to on but no turn over. No check engine light comes in at all and the fan cones on. I turn it on normally with no short and still no check engine light. Never noticed it but doesn’t the check engine light typically comes on just as a check then go out when you start it? Tomorrow I probably need to heck to see if the previous owner removed the bulb.
Melting Slicks
Joined: May 2014
Posts: 2,897
Likes: 592
From: New Port Richey FL
With No jumping normal car key in run Not Running Check Engine light should be ON
So if you have No light pull the DIC check the bulb and circuit. Hopefully you find a dead bulb because after that we enter a world of ECM
So if you have No light pull the DIC check the bulb and circuit. Hopefully you find a dead bulb because after that we enter a world of ECM
Thread Starter
Heel & Toe
Joined: Jun 2022
Posts: 18
Likes: 0
Thanks. I will check it tomorrow. I have a spare rebuilt cardone ecm sitting in a box. I have not changed it out yet as I am a little hesitant as on the details of it it said something about possibly needing additional relearns on it and I have no clue what that entails.
Melting Slicks
Joined: May 2014
Posts: 2,897
Likes: 592
From: New Port Richey FL
Relax if you pull the ECM for swap just open the little hatch Carefully Release the Lock Tabs push outward at same time tabs should push up prom out of mount, remove the Prom (blue plastic bar) Carefully install into other reseat the lock tabs.
also check your fuses always start with easy and simple
also check your fuses always start with easy and simple
Last edited by s carter; Sep 8, 2022 at 08:10 AM.
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