87 code reader doesn't respond when conected
Thread Starter
1st Gear
Joined: Apr 2005
Posts: 1
Likes: 0
87 code reader doesn't respond when conected
My '87 runs great (200k miles, 4+3), but shows "Service engine soon", intermittently. Plugging in the OBD1 code reader doesn't flash the readout at all. Also connecting the pins directly doesn't have any effect. Could this be a grounding problem???
Thanks Guys.
Thanks Guys.
Le Mans Master
Joined: Sep 2006
Posts: 6,050
Likes: 147
From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
ces light
use a flashlight, and a paper clip to make sure you get the correct pins in the ALDL connector. Thy are the top 2 r/h pins.
forget the code reader if you know how to count.
I tried the code reader route, and could not get satisfactory results.
forget the code reader if you know how to count.
I tried the code reader route, and could not get satisfactory results.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
forget the code reader if you know how to count.
First get the SES to flash with just ALDL pins A&B jumpered; then try a code reader or scan tool.
If you suspect corroded ALDL pins you could try jumpering together the two wires going to them:
Pin....Color......Function
A......Blk/Wht..Gnd
B......Wht/Blk..ALDL Input
Last edited by 65Z01; May 6, 2007 at 01:23 AM.
