hi everyone, the other day as I was driving my check engine came on. Didn't think much of it but now it seems to come on every time the engine get up to temp. I borrowed a friends Actron scanner since my car has a ODB-II port on it. The scanner works fine on his car but on mine it powers up but gives a Link error every time. Whats a good way to get the error codes without going to the dealer every time?
I tried my local autozone as well, they get the same result. They say I might have "Pre-ODB-II". They said something along the lines of the pins were in a different order then ODB-II.
i dont no if its a pre-obd-II problem but i have the same problem in my 98 z24 and no one can tell me why its not working on my car im stuck taking my car to the gm dealer its the only way but its expensive
here is what Protomec told me in an email:
"Codes are a problem it will use 94-down communication standards over 96-up communication lines.
A 94-down scanner won't plug in.
A 96- up won't understand.
This is exactly the situation for any 95 J, it is not special because it was swapped.
Any tool that can read a 95 can read the swapped car, but finding tools that support a 95 is kinda rare."
so if you dont find any place that can read the codes, i guess you have no choice to go to dealer.
might contact him for more question.
I'm going to use a 95 ecm on my 97z so i can chip it and was asking about how to read the code and thats what he told me!
GM will tell you. save yourself the time and spend the money.
Well went to my dealer today, hooked up the tech-II scanner and gave me my 2 codes and cleared them out. 1 was faulty TPS and other was faulty EGR. He didnt charge me anything since he was just reading the codes. Thanx alot all for your help.
Yep, you don't have OBDII. For '95, GM used a sort of pseudo-OBD system. They used the same port interface, but the pins are different than true OBD systems. Glad you got it resolved anyway. FYI
