1990 Chip, new info.
Thread Starter
Heel & Toe
Joined: Dec 2012
Posts: 24
Likes: 0
1990 Chip, new info.
Hi again,
Thanks to everyone who offered advice or help in my previous post. Thanks to someone on this forum I found someone to burn a chip for me. Now I have some new problems.
I was looking for an ANHW eprom for a 90 convertible. I found someone to burn an AXCS which is a 91 version of the ANHW. After install here's the new problems.
Fans start immediately when key is turned.
Hard to start(3-5 tries) then starts and runs pretty well.
Electronic A/C display is blank and blower starts at full when key is turned.
Check Engine Light is on.
Will not enter diagnostics mode.
We replaced the ecm with a junkyard unit when we first started working on it.
Is this the chip or something I couldn't see until a "working" chip was installed?
Thanks,
David
Thanks to everyone who offered advice or help in my previous post. Thanks to someone on this forum I found someone to burn a chip for me. Now I have some new problems.
I was looking for an ANHW eprom for a 90 convertible. I found someone to burn an AXCS which is a 91 version of the ANHW. After install here's the new problems.
Fans start immediately when key is turned.
Hard to start(3-5 tries) then starts and runs pretty well.
Electronic A/C display is blank and blower starts at full when key is turned.
Check Engine Light is on.
Will not enter diagnostics mode.
We replaced the ecm with a junkyard unit when we first started working on it.
Is this the chip or something I couldn't see until a "working" chip was installed?
Thanks,
David
Le Mans Master
Joined: Mar 2002
Posts: 5,889
Likes: 2
From: Castro Valley Calif.
St. Jude Donor '03 thru '26
This is indicatave of the chip being installed backward & the car running in the limp home mode because it's bypassing the bin. You must be using a G1 adapter becaused you can't mount the memcal itself in the ECM wrong.
If you used a G1 adapter, simply flip the memcal end for end. If you installed a new chip on the memcal itself, flip that end for end.
If you used a G1 adapter, simply flip the memcal end for end. If you installed a new chip on the memcal itself, flip that end for end.
Thread Starter
Heel & Toe
Joined: Dec 2012
Posts: 24
Likes: 0
Hmm, I don't know what a G1 adapter is so I don't think I used one. I ordered a complete memcal with the prom installed on a GM Memcal. How is the prom supposed to go into the Memcal? Everyone makes mistakes so maybe the person I ordered it from put the prom on backwards
Le Mans Master
Joined: Mar 2002
Posts: 5,889
Likes: 2
From: Castro Valley Calif.
St. Jude Donor '03 thru '26
Thread Starter
Heel & Toe
Joined: Dec 2012
Posts: 24
Likes: 0
