What he said... and the TB base gaskets. After that, all the hoses and headlight relays etc... GL
1982 c3 aldl
Thread Starter
Racer
Joined: Oct 2021
Posts: 436
Likes: 15
From: Maryland
1982 c3 aldl
Hello, potentially new C3 owner here. I am looking at a car, and need some questions answered before I buy it. It is a 1982 model, and I hear they have a ALDL terminal access for basic diagnostics of the ECM. My question is how exactly do I access this diagnostic info? I know where the port is located, but all steps after that are beyond me. Thank you!
Safety Car
Joined: Nov 2005
Posts: 3,532
Likes: 1,185
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
Hello, potentially new C3 owner here. I am looking at a car, and need some questions answered before I buy it. It is a 1982 model, and I hear they have a ALDL terminal access for basic diagnostics of the ECM. My question is how exactly do I access this diagnostic info? I know where the port is located, but all steps after that are beyond me. Thank you!
Last edited by Buccaneer; Oct 8, 2021 at 03:18 AM.
Safety Car
Joined: Nov 2005
Posts: 3,532
Likes: 1,185
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
Thread Starter
Racer
Joined: Oct 2021
Posts: 436
Likes: 15
From: Maryland
@Buccaneer @Fast81 thank you both. yea welcome to the craziness is right, in the past week I've learned a *** ton and found a *** ton more problems, will keep making threads until its at least highway worthy!
Racer
Joined: Aug 2015
Posts: 384
Likes: 144
From: Pine Ridge FL
The paperclip to read the codes and a voltmeter is probably all you'll ever need. But the ALDL can provide interesting data and save you some time diagnosing tricky issues. You can get a USB adaptor and use open source software to read the data. However, it's a real pain to get working since most of the software is pretty old now.
When I was working at GM I met an old timer that worked on the Crossfire back in the day. He recommend finding an old MPSI 3818. I found one like new off of eBay cheaper than what I paid for the USB cable. It didn't come with instructions but was easy enough to figure out.
When I was working at GM I met an old timer that worked on the Crossfire back in the day. He recommend finding an old MPSI 3818. I found one like new off of eBay cheaper than what I paid for the USB cable. It didn't come with instructions but was easy enough to figure out.
Melting Slicks
Joined: Aug 2003
Posts: 3,416
Likes: 291
From: dayton oh
Take alot of pics before starting. The top-plate has a "****-ton" of ground connections and brackets mounted to the bolts/studs. we use an untouched 82CE as our reference EVERY time we work on our 82 project...................
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buccaneer is one of the best info and help sources for this crossfire setup. but try not to beat him to death with every question you can think of. we all rely too heavily on the acknowledged experts in each field. and here is a cheap MPSI 3818. https://www.ebay.com/itm/11494166523...4AAOSwTxhfpMZr
Safety Car
Joined: Nov 2005
Posts: 3,532
Likes: 1,185
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
buccaneer is one of the best info and help sources for this crossfire setup. but try not to beat him to death with every question you can think of. we all rely too heavily on the acknowledged experts in each field. and here is a cheap MPSI 3818. https://www.ebay.com/itm/11494166523...4AAOSwTxhfpMZr
