Little puzzled.......
Thread Starter
Racer
Joined: Jul 2007
Posts: 313
Likes: 0
From: Laurel MS
Little puzzled.......
Got a 94 LT1 w two diagnostic plugs. First is factory original next to SW column w connections severed.
Number two is a stealth DP which is curled up in the kick panel & wired into the system.(probably OBD 2 compliant) What is the advantage of using NBR 2 as former owner apparently did 12 years ago? OBD 1 is std sys in my car right? Will my sys work w OBD 2 readers/tuners?
Your inputs appreciated.
Cheers
Number two is a stealth DP which is curled up in the kick panel & wired into the system.(probably OBD 2 compliant) What is the advantage of using NBR 2 as former owner apparently did 12 years ago? OBD 1 is std sys in my car right? Will my sys work w OBD 2 readers/tuners?
Your inputs appreciated.
Cheers
Last edited by jim_hewett; Jun 14, 2008 at 07:47 PM.
Safety Car
Joined: Apr 2003
Posts: 3,793
Likes: 9
From: VA
Got a 94 LT1 w two diagnostic plugs. First is factory original next to SW column w connections severed.
Number two is a stealth DP which is curled up in the kick panel & wired into the system.(probably OBD 2 compliant) What is the advantage of using NBR 2 as former owner apparently did 12 years ago? OBD 1 is std sys in my car right? Will my sys work w OBD 2 readers/tuners?
Your inputs appreciated.
Cheers
Number two is a stealth DP which is curled up in the kick panel & wired into the system.(probably OBD 2 compliant) What is the advantage of using NBR 2 as former owner apparently did 12 years ago? OBD 1 is std sys in my car right? Will my sys work w OBD 2 readers/tuners?
Your inputs appreciated.
Cheers
Your car came from the factory with an OBD1 PCM and a 16 pin diagnostic port.
Let's see pictures of what you've got.
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
Yes it is a OBD1 system with the OBD2 connector. I would say use the on board diagnostics or a OBD1 reader. The on board is a great system though.
Just had some communication this week on the topic of using OBD2 readers on these cars. Just for fun last year I connected my OBD2 reader to my 94 just to see. It did not work because the protocol is different as I expected. I have your basic under $100 reader.
However someone has a 95 who said his OBD2 reader worked on his car. I don’t know how well it worked or if it can see CCM codes. Additional information was provided which said the code reader has to be a expensive one to handle the OBD1 protocol as well. This is just info I am passing along and have no opinion or personal experience with this myself.
I personally use a Tech1 when I want or need to, but find the on board works great and gives code info as it is designed to do. If you just have to have a separate code reader for the 94 or 95, its probably best to get one that is designed for OBD1 if you want to stay in the $100 budget. The problem is finding one with the OBD2 type connector.
There is a higher speed serial connection pin on the ALDL plug and don’t know if it is used on your other system in some way.
Check this post:
http://forums.corvetteforum.com/show....php?t=1933929
Just had some communication this week on the topic of using OBD2 readers on these cars. Just for fun last year I connected my OBD2 reader to my 94 just to see. It did not work because the protocol is different as I expected. I have your basic under $100 reader.
However someone has a 95 who said his OBD2 reader worked on his car. I don’t know how well it worked or if it can see CCM codes. Additional information was provided which said the code reader has to be a expensive one to handle the OBD1 protocol as well. This is just info I am passing along and have no opinion or personal experience with this myself.
I personally use a Tech1 when I want or need to, but find the on board works great and gives code info as it is designed to do. If you just have to have a separate code reader for the 94 or 95, its probably best to get one that is designed for OBD1 if you want to stay in the $100 budget. The problem is finding one with the OBD2 type connector.
There is a higher speed serial connection pin on the ALDL plug and don’t know if it is used on your other system in some way.
Check this post:
http://forums.corvetteforum.com/show....php?t=1933929
Last edited by pcolt94; Jun 16, 2008 at 03:49 PM.
