Go Back   Corvette Forum > C4 Corvettes, 1984 - 1996 > C4 Scan & Tune
Sign in using an external account
Register Forgot Password?
Register Search Today's Posts Mark Forums Read FAQ Vendor Directory
Search
C4 Scan & Tune
Corvette Onboard Diagnostics, Service Advice, Dyno Tuning, Fuel Management, Tuning Software, LS1 Edit

Welcome to Corvetteforum.com!
Welcome to Corvetteforum.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Corvetteforum.com today!


Corvette Store
 
 
C7 Parts & Accessories
C6 Parts & Accessories
C5 Parts & Accessories
C4 Parts & Accessories
C3 Parts & Accessories
C2 Parts & Accessories
C1 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
  
Reply
 
 
 
 
Thread Tools Search this Thread
Old 01-28-2004, 10:34 PM   #1
SBNova
CF Senior Member
 
SBNova's Avatar
 
Member Since: Dec 2002
Location: Lakeland fl
Default rookie mistake of the day.. need some help

I removed the factory eprom from the memcal on my 165 ECM. I forgot to note its position prior to its removal, so I need some help. I know the "notch" points to the outside of the case, but I dont remember its position otherwise. It can be one of two ways. 1) mounted all the way at the outer edge of the memcal, with two spaces between it and the nearest limp chip, or 2) one space in from the outside edge of the memcal leaving one space between it and the nearest limp chip. I doubt it goes against the nearest limp chip but I suppose that would be option #3. Please help me out, I am feeling really stupid right now.....
SBNova is offline   Reply With Quote
Old 01-28-2004, 11:00 PM   #2
tjwong
CF Senior Member
Support Corvetteforum!
 
tjwong's Avatar
 
Member Since: Jan 2003
Location: Portland Oregon
Send a message via AIM to tjwong
Default Re: rookie mistake of the day.. need some help (SBNova)

It should be all the way to the outside end with the notch on the prom is. The two end pins on the prom should be in contact with the end two pin sockets of the MEMCAL socket.

How did you get the prom out of the carrier? Is it still in one peice?

tjwong is offline   Reply With Quote
Old 01-28-2004, 11:27 PM   #3
SBNova
CF Senior Member
 
SBNova's Avatar
 
Member Since: Dec 2002
Location: Lakeland fl
Default Re: rookie mistake of the day.. need some help (tjwong)

Thanks, your the greatest. It just pried up. I did it gently and it came out fine. It wasnt soldered. I planned to put a low profile zif in there but the legs on the zif are too short, and it barely makes contact no less hold itself in. Then I ended up in this delema anyway. What a day..
SBNova is offline   Reply With Quote
Old 01-29-2004, 03:18 AM   #4
tjwong
CF Senior Member
Support Corvetteforum!
 
tjwong's Avatar
 
Member Since: Jan 2003
Location: Portland Oregon
Send a message via AIM to tjwong
Default Re: rookie mistake of the day.. need some help (SBNova)

You may want to check with Digi-Key they have a myriad of different types of ZIF sockets. I am sure you can find one there. I have some none ZIF sockets with extra long legs on them and you could use one of them in that socket. It would be much easier to extract the prom from having one of those types of sockets in the MEMCAL package rather than what you have now.
tjwong is offline   Reply With Quote
Old 01-29-2004, 08:56 PM   #5
-js-
CF Senior Member
 
-js-'s Avatar
 
Member Since: Apr 2003
Location: Detroit MI
Default Re: rookie mistake of the day.. need some help (SBNova)

FYI I also was able to remove mine from an 86 165.
However the chip would not seat properly after removing it. It would work some of the time until I soldered it in. Now I got a moates adapter for my custom chip.
-js- is offline   Reply With Quote
Old 01-29-2004, 09:37 PM   #6
SBNova
CF Senior Member
 
SBNova's Avatar
 
Member Since: Dec 2002
Location: Lakeland fl
Default Re: rookie mistake of the day.. need some help (-js-)

I actually have a moates adapter, but I am having trouble programming an 29F040 chip. So in the meantime I wanted to stick a 27c256 in it so I could at least try out the new ecm. I just swapped in a 165, and I am having a few glitches. It starts and runs but at first I had a high idle and a check engine light so I guessed it was in limp mode, when I put pressure on the chip/zif- it idled down and the check engine light went off. I would like to know the code it threw to be sure, but my cable broke a terminal (winaldl), and I searched EVERYWHERE for my chilton book to look up codes and couldnt find it. So when I couldnt find the book I didnt even pull the code, I just got frustrated and called it a day.
SBNova is offline   Reply With Quote
Old 01-29-2004, 09:42 PM   #7
Bluevette85
CF Senior Member
 
Bluevette85's Avatar
 
Member Since: Nov 2001
Location: Latham NY
Default Re: rookie mistake of the day.. need some help (SBNova)

Do you have the chip positioned right in the Moates adapter?

The notch on the top of the chip faces away from the ZIF handle.

Also, to use the 256 chip you either double-stack the bin or start programming the chip at address 04000.
Bluevette85 is offline   Reply With Quote
Old 01-30-2004, 09:36 AM   #8
SBNova
CF Senior Member
 
SBNova's Avatar
 
Member Since: Dec 2002
Location: Lakeland fl
Default Re: rookie mistake of the day.. need some help (Bluevette85)

Well, my moates adapter is the GP-3, which has the switch and is designed for a 30(?) pin 29F040 chip. So I wasnt sure if I could put a 28 pin chip in it. Thats why I treid the zif mounted in the factory memcal, which is where I had the problem. I wasnt sure which "slot" the zif/chip should go in, but I did have it oriented in the right direction. I have not tried it again yet, I will probably have time today.
SBNova is offline   Reply With Quote
Old 01-30-2004, 09:36 AM
 
Go Back   Corvette Forum > C4 Corvettes, 1984 - 1996 > C4 Scan & Tune
Reload this Page rookie mistake of the day.. need some help
 
 
 
Reply

Tags
28, fl, lakeland, pin, socket, zif


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -4. The time now is 11:26 PM.


Emails & Password Backup

Search Engine Friendly URLs by vBSEO 3.5.2