How do you pull trouble codes on a 95?
Thread Starter
Safety Car
Joined: Feb 2003
Posts: 3,848
Likes: 95
From: Springfield MO
How do you pull trouble codes on a 95?
can you pull the codes without a scanner? I've got a problem. I went for a drive this afternoon and when i got off the highway the car seems to surge very bad. Enough where i had to keep the idle above 1000 rpm in drive just to keep it running. Now i have a check engine light on. When the light comes on the idle returns to normal but if its not on the idle is very very rough (like a huge cam). I think it may be an IAC problem but i'm not sure. Any ideas on how to get the codes?
Melting Slicks
Joined: Feb 1999
Posts: 3,261
Likes: 9
From: sonoma ca
The site below will give you info on how to check for codes with no scanner. You can start with Fact Sheet, but read it thoroughly & it will guide you along.
Good luck,
http://www.corvettephotographs.com/c4vettes/index.htm
Good luck,
http://www.corvettephotographs.com/c4vettes/index.htm
Last edited by Red Dwarf; Nov 20, 2006 at 03:52 PM. Reason: forget address
Racer
Joined: Jun 2006
Posts: 408
Likes: 0
From: Elkton MD
Way to go
In trying to help you find DTC code access, I looked for it in the Helms manual. Alas - unsuccessfully even though I recall seeing the procedure many months ago.
Could you please publish where you found the method.
Thanks ahead.
Could you please publish where you found the method.
Thanks ahead.
Thread Starter
Safety Car
Joined: Feb 2003
Posts: 3,848
Likes: 95
From: Springfield MO
Found them in my FSM. I've got the 16 pin diagnostic port under the dash. Ground the #12 port to the #5 port then turn the key on and the codes will appear in the speedometer.
Racer
Joined: Jun 2006
Posts: 408
Likes: 0
From: Elkton MD
'95 Diagnostic codes
Thank you so much.
Where the #$@#*(!@#$ was that in the manual?
I found all kinds of stuff about needing a scanner (at the beginning of 6E3) but not a nice direct explanation like that.
Thanks again.
Where the #$@#*(!@#$ was that in the manual?
I found all kinds of stuff about needing a scanner (at the beginning of 6E3) but not a nice direct explanation like that.
Thanks again.
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Thread Starter
Safety Car
Joined: Feb 2003
Posts: 3,848
Likes: 95
From: Springfield MO
16 pin connector. I'm using a paper clip to jump the #5 terminal along the top row to the #12 terminal along the bottom row of the DLC connector under the driver side dash. Just like on the early OBD1 cars.
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Originally Posted by JJ 86
Well when i did 5 to 12 or 4 to 12 I got the same codes. 
Possible if both 4 and 5 are grounds. Just never heard of jumping 5 and 12.
As long as you have a ground it should work.
