Ecm 730 doesn't store check engine light codes
#1
Member
Thread Starter
Join Date: May 2004
Location: Texas
Posts: 305
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Z28
Engine: 350
Transmission: 700R4
Ecm 730 doesn't store check engine light codes
I have a 91z28 355 built engine running a superram and an ostrich emulator with tunerpro software. Problem is when I first start it runs fine then within 15 minutes the check engine light kicks on. So i turn the car off and try to pull codes but get nothing.
Is there a way to pull codes while still datalogging with tunerpro ? Or is there a battery in the ecm which might be dead not able to store them ?
Is there a way to pull codes while still datalogging with tunerpro ? Or is there a battery in the ecm which might be dead not able to store them ?
#2
Moderator
iTrader: (1)
Join Date: Mar 2002
Location: Chasing Electrons
Posts: 18,401
Likes: 0
Received 215 Likes
on
201 Posts
Car: check
Engine: check
Transmission: check
Re: Ecm 730 doesn't store check engine light codes
No battery in the ECM. It can take up to 20 seconds for a code to be stored. So if you are shutting the engine off too soon, let it run for a while.
Should get at least code 12. That shows that the ALDL port and ECM should be OK.
The malfunction codes are in the ALDL stream. Just need to pull them out via TunerPro.
RBob.
Should get at least code 12. That shows that the ALDL port and ECM should be OK.
The malfunction codes are in the ALDL stream. Just need to pull them out via TunerPro.
RBob.
Thread
Thread Starter
Forum
Replies
Last Post
camaro87-alex
Tech / General Engine
12
05-25-2022 01:12 PM
joef2002
Tech / General Engine
1
08-04-2012 01:38 PM
Stevolwevol
Electronics
4
08-12-2010 09:23 PM
Homer
Carburetors
40
12-28-2003 12:06 AM