PCM Reset HELP!
This is a discussion on PCM Reset HELP! within the Computer & Tuning forums, part of the LSx Technical Help Section category; Hi all. I just bought a 1999 Firehawk M6 White. I cleaned the MAF and TB. I wanted to reset ...
07-08-2008, 07:35 PM #1
PCM Reset HELP!
I just bought a 1999 Firehawk M6 White.
I cleaned the MAF and TB. I wanted to reset the PCM and I followed what was listed on all the websites I found.
I do not have an SES Code. I wanted to do it to reset the system.
My question to you is. Shouldn't the car go through the idle up phase and backdown learning what is needed to learn? I might also be doing it wrong. Here are my steps.
Turn the iginition to "on." This is the part of the igintion that is right before you turn the car over. From what I understand this is the "on" position. Am I right?
Then I raise the hood and remove the PCM IGN fuse first then the PCM BAT fuse second.
I have waited 20 minutes and then turned the key off and then put the fuses back in.
Am I wrong that it should start to quote "relearn" all the idling? Or should it just start up and go right to its normal idle?
I have also tried it 4 different ways in pulling the bat first then ign then ign then bat on both sides. I have no idea what to do next.
07-08-2008, 07:46 PM #2
Its not going to idle high for a long time. it takes seconds for it to relearn.
07-08-2008, 07:53 PM #3
Thats what I thought too. It takes about 2 seconds. It starts like it always does then drops down to 800 rpm then stays there. I Have a friend how has a 2000 ta and his does weird stuff when it is relearning. And it takes at least 20 seconds to learn. Mine does nothing like that.
07-08-2008, 07:57 PM #4
07-08-2008, 08:58 PM #5
Thanks sand. I will try it again tomorrow. Maybe it is being reset and it relearns pretty fast. Thanks for your help.
07-09-2008, 09:13 AM #6
- Join Date
- Jul 2005
- Jacksonville, FL
I think it's being reset - you can always induce a SES code for something by pulling a fuse. Maybe AIR PUMP or ENG SEN.
07-23-2008, 06:35 PM #7
i thought u could reset by just disconecting the battery. i changed the tps and map, and disconnected the battery, after five mins i hooked it back up and went the next day to autozone and had the same codes, should i follow these steps or did i do it right
07-24-2008, 02:05 AM #8
Turn key on, don't start car
Pull PCM BATT and PCM IGN fuses in eng compartment
Wait 5-10 min
Turn ignition off
Idle will be a little grumpy until it relearns - also resets the readiness tests.2010 Camaro
2006 GTO, LS2, 1 of 475
2009 Chevy Silverado
07-24-2008, 08:44 PM #9
It only takes a few seconds actually... Alternately, as noted by another poster above, you can also unhook your battery.
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