Autozone cleared codes...idles funny
12-21-2006, 12:50 AM
#1
Autozone cleared codes...idles funny When autozone cleared my SES code, could it have wiped out my computer's idle? I mean, it acts JUST LIKE when I first put the new IAC on. Does clearing the SES at autozone re-set the computer and I just need to let it re-learn things? IT has been a day or 2 and it just idles wierd, rpms rise or hang at 2500, ect. sometimes, I key on/key offed it after letting it idle for 5 mintues and it seemed ok for a while, acted up again, key on/key off and its been ok since, is it just re-learning stuff? Would clearing SES re-set it?
12-21-2006, 01:00 AM
#4
12 Second Club
Join Date: Apr 2005
Location: las cruces, new mexico
Posts: 800
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Revelation Z28
clearing SES lights wont reset anything but the DTC catcher in the database. only way to reset the PCM is to unhook the battery, or any kind of tune.
could unhooking the battey erase a tune?
12-21-2006, 01:03 AM
#7
TECH Veteran
iTrader: (10)
Join Date: Jul 2006
Location: Rialto CA
Posts: 4,770
Likes: 0
Received 0 Likes
on
0 Posts
didnt say it would, but it would make the car run like ***.
let it be for a day or so
let it be for a day or so
Originally Posted by BLKWS.6
air filter is new and no that wont erase a tune.
Trending Topics
12-21-2006, 05:23 AM
#10
LS1Tech Administrator
iTrader: (3)
Join Date: Nov 2001
Location: Schiller Park, IL Member: #317
Posts: 32,019
Likes: 0
Received 1,468 Likes
on
1,059 Posts
Try the idle relearn proceedure that I mentioned to you before. It can't hurt.
12-21-2006, 10:11 PM
#13
Banned
Join Date: Sep 2006
Posts: 282
Likes: 0
Received 0 Likes
on
0 Posts
The ECU probably has to relearn the idle and a few other parameters if you installed a new IAC valve. Give it a few drive cycles, it should return to normal. If not, something else might be wrong.
I installed an intake on my friends car, (not an F-Body), and even after unhooking the battery, the engine was idleing at 400 RPM's, due to the increase in incoming air. After about 2 drive cycles the ECU re-learned the idle, and it was back to around 700 RPM.
I installed an intake on my friends car, (not an F-Body), and even after unhooking the battery, the engine was idleing at 400 RPM's, due to the increase in incoming air. After about 2 drive cycles the ECU re-learned the idle, and it was back to around 700 RPM.
12-22-2006, 02:37 AM
#15
No issues now, the IAC was replaced a thousand miles ago or so. Wierd, did just fine today after I did the idle re-set a few times (idle for 5 minutes undisturbed, shut off, re-start). Guess it was being an ***. Also cleaned teh crap out of the PCV valve (it had some nasty carbon looking chunky crap that I blew out with carb cleaner, it rattles like normal now, it rattled before, but with reluctance it seemed).
12-22-2006, 08:16 PM
#19
LS1Tech Administrator
iTrader: (3)
Join Date: Nov 2001
Location: Schiller Park, IL Member: #317
Posts: 32,019
Likes: 0
Received 1,468 Likes
on
1,059 Posts
Originally Posted by BLKWS.6
Now it happily burbles away at 750 on the stock tac. I guess it was just feeling dick the other day 
Idle re-learn may have done the trick
Idle re-learn may have done the trick
12-22-2006, 08:44 PM
#20
Originally Posted by RPM WS6
Sometimes after I've cleared DTCs I've needed an idle re-learn to restore proper idle. Other times not. But always after pulling the battery.
It behaved JUST LIKE when it got the new IAC. I re-learned the idle again and it has not done it since. I think that was the issue.