1984 Crossfire ECM
Thread Starter
Cruising
Joined: Mar 2019
Posts: 11
Likes: 0
1984 Crossfire ECM
I need an ECM for a 1984 crossfire with an automatic transmission. I have an ECM for a 1984 crossfire with a manual transmission. Can I modify a manual transmission ECM to work in an automatic transmission car? I've searched the forums and found mentioned an EPROM Chip swap to make this possible. Is this correct? Thanks for any help you can provide.
Pro
Joined: Aug 2020
Posts: 647
Likes: 126
From: Liliha Bakery stuffing my face with coco puffs!
Coulda swore I saw a video on how to do it floating around but can't seem to find it. One thing is to make sure you pay attention to the orientation of the PROM. There's going to be a little half moon on the chip that identifies pin 1. Use a sharpie and mark the ECM on the side that coincides with it before you pull the PROM out. During installation match the "half moon" with your sharpie mark. If I find that video, I'll link it up.
Ahhhh...I was referring to this but he doesn't show how to...
Ahhhh...I was referring to this but he doesn't show how to...
Last edited by stew86MCSS396; Sep 20, 2020 at 06:59 PM.
Thread Starter
Cruising
Joined: Mar 2019
Posts: 11
Likes: 0
Thank you for the responses. I don't know what codes were displayed when the testing was done because the car is in a different state. The EPROM chip in the original ECM may be good; they can do the swap if this is the case.
Drifting
Joined: Jun 2018
Posts: 1,402
Likes: 287
From: Brisbane Australia
C4 of Year Finalist (performance mods) 2019
yeah the reason I ask is because the FSM has a lot of diagnostic test to do before you conclude that the ECM is stuffed. But it sounds like someone else is telling you it needs replacing so I guess you need to trust that they have done all the tests.
