Another 7730 issue - Third Generation F-Body Message Boards


DFI and ECM Discuss all aspects of DFI (Digital Fuel Injection), ECMs (Electronic Control Module), scanners, and diagnostic equipment. Fine tune your Third Gen computer system for top performance.

Another 7730 issue

Reply
 
Thread Tools Search this Thread
Old 06-14-2018, 04:10 PM   #1  
Junior Member
Thread Starter
 
Join Date: Oct 2016
Posts: 19

Another 7730 issue

I have a 91 3.1 V6 with the 7730 ECU that will only run at idle and hesitates/misses under any throttle. The check engine light is on all the time and does not blink when you turn the car on. Also when grounding the ALDL pin it still stays on solid. No code 12 flash or any other signs of life. I'm thinking the ECU is fried. Any thoughts?
v6opel is offline   Reply With Quote
Old 06-14-2018, 04:11 PM   #2  
Sponsor
iTrader: (78)
 
Tuned Performance's Avatar
 
Join Date: Dec 2004
Location: Mile High Country !!!
Posts: 9,912
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt


Re: Another 7730 issue

Sounds like a bad ecm .
Sent you a pm Incase you need one

Last edited by Tuned Performance; 06-14-2018 at 04:30 PM.
Tuned Performance is offline   Reply With Quote
Old 06-15-2018, 05:37 AM   #3  
Junior Member
Thread Starter
 
Join Date: Oct 2016
Posts: 19

Re: Another 7730 issue

Thanks. So what would cause the ECM to fail besides old age? I've heard some say starting with a bad battery or something like that? I'm curious so that I can better take care of the system once repaired.
v6opel is offline   Reply With Quote
Old 06-15-2018, 07:00 AM   #4  
Moderator
iTrader: (1)
 
Join Date: Mar 2002
Location: Chasing Electrons
Posts: 16,955
Car: check
Engine: check
Transmission: check


Re: Another 7730 issue

Quote:
Originally Posted by v6opel View Post
Thanks. So what would cause the ECM to fail besides old age? I've heard some say starting with a bad battery or something like that? I'm curious so that I can better take care of the system once repaired.
The solder joints on some of the chips crack and become intermittent. Sounds like an engine swap/conversion. To help with longevity, the ECM needs to be both electrically and vibration isolated from the chassis.

RBob.
RBob is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
trans issue or another issue? evilemokid94 Transmissions and Drivetrain 30 07-25-2013 10:33 AM
yet another issue cranks not start is wet fouled the issue Zach/90\irocZ Tech / General Engine 19 12-22-2012 09:35 PM
Another lean pop question '7730 $8D kaylin4u DIY PROM 0 11-20-2006 06:27 PM
at a cross road with dfi or 7730 leaning to 7730 383LT1intake DIY PROM 4 04-09-2003 06:26 AM
ATTN: GLENN, Can you or anyone tell me if this ECM is another type of the 7730 ECM's? 88SS6SPEED DIY PROM 4 07-11-2001 02:56 PM


Go Back   Third Generation F-Body Message Boards >

Thread Tools Search this Thread
Search this Thread:

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


Advertising
Featured Sponsors
Vendor Directory

1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 03:27 PM.


All content copyright 1997 - 2018 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: