did i just kill my pcm?
01-17-2009, 11:49 PM
#1
12 Second Club
Thread Starter
iTrader: (2)
Join Date: Dec 2008
Location: Peoria, AZ
Posts: 371
Likes: 0
Received 0 Likes
on
0 Posts
did i just kill my pcm? so im out at the track right now, i was using tunercat to add a degree of timing in the extended table and adjust a shift point and was almost done programing the pcm, because im an idiot i opened datamaster to review some files. tuner cat said pcm programmed sucessfuly and reset the pcm, the fans came on like they normally do, but they never shut off, now when i turn the key to accesory the fans keep running. if i try to start the car is turns over smooth and fast but will not fire, it sounds like it is not getting spark. did i just fry my PCM? any way to check besides putting a new one in to see if that fixes it?
01-18-2009, 12:22 AM
#2
My pcm did this one time when I tried to upload a file to my autoprom with the key on.(not suppose to upload files to the autoprom with key on with 93's) Fans kept coming on with key on and would not start even after multiple tries with key off. Mine is a 93 (removable chip) so it's a little different, but did exactly what yours is doing. I removed power from the pcm and let it sit for a while. Hooked everything back up the next day, uplaoded the file and car worked fine. Try that and see what happens, it's worth a shot.
01-18-2009, 10:46 AM
#4
12 Second Club
Thread Starter
iTrader: (2)
Join Date: Dec 2008
Location: Peoria, AZ
Posts: 371
Likes: 0
Received 0 Likes
on
0 Posts
well i tried last night pulling the two fuses labled pcm batt and pcm ign in the dash and waiting 10 min, i'll try the battery now, robably not good, looks like its time to call pcm 4 less, damnit 
01-18-2009, 12:33 PM
#5
It happens man! I've had it happen to me before too. I always try to have a spare laying around just in case, come to think of it, i'm down to only one right now, lol!
01-19-2009, 06:56 PM
#7
12 Second Club
Thread Starter
iTrader: (2)
Join Date: Dec 2008
Location: Peoria, AZ
Posts: 371
Likes: 0
Received 0 Likes
on
0 Posts
okay, pcm for less is out of stock, anyone have any other ideas on where to get a new PCM, there are several scrap yards around me, but if i go that route it would have to be from a 94-95 z28 right?
Trending Topics
01-19-2009, 08:18 PM
#9
12 Second Club
Thread Starter
iTrader: (2)
Join Date: Dec 2008
Location: Peoria, AZ
Posts: 371
Likes: 0
Received 0 Likes
on
0 Posts
okay so i just found one new from Checker for $109 and it is in stock and local, woo hoo, inorder to do the swap just disconnect the battery, unhook the 4 harnesses connect the new one, and then flash my tune right? anything else i need to know
01-19-2009, 08:25 PM
#10
Just have your PCM fixed. Most tuners can fix it no problem. And if I had to buy new, I'd buy a NEW GM PCM.
Like I said, do yourself a favor and have yours fixed.
01-19-2009, 08:26 PM
#11
On The Tree
iTrader: (2)
Join Date: Jun 2008
Location: Quakertown
Posts: 140
Likes: 0
Received 0 Likes
on
0 Posts
don't remember where I saw it but some programmer can solder a socket for the chip for the pcm so you can have backup chips.
here it is
http://www.madtuner.com/index.php?pa...mart&Itemid=26
here it is
http://www.madtuner.com/index.php?pa...mart&Itemid=26
01-19-2009, 08:53 PM
#12
12 Second Club
Thread Starter
iTrader: (2)
Join Date: Dec 2008
Location: Peoria, AZ
Posts: 371
Likes: 0
Received 0 Likes
on
0 Posts
huh, i called 2 checkers and they both said that they did have the PCM for 109 i'll see, Autozone did carry them but not in stock and they were $135 i'll probably have this one fixed so i have a backup but i need to get this car back on the road ASAP since it is my DD car, i cant really afford to send it off and wait to get it back.
01-19-2009, 08:56 PM
#13
12 Second Club
Thread Starter
iTrader: (2)
Join Date: Dec 2008
Location: Peoria, AZ
Posts: 371
Likes: 0
Received 0 Likes
on
0 Posts
don't remember where I saw it but some programmer can solder a socket for the chip for the pcm so you can have backup chips.
here it is
http://www.madtuner.com/index.php?pa...mart&Itemid=26
here it is
http://www.madtuner.com/index.php?pa...mart&Itemid=26
again anything i need to know about installing it, or just unhook it and swap em over then re-flash it
01-19-2009, 09:39 PM
#14
12 Second Club
Thread Starter
iTrader: (2)
Join Date: Dec 2008
Location: Peoria, AZ
Posts: 371
Likes: 0
Received 0 Likes
on
0 Posts
There is something wrong with that. $109 for a PCM? No way. They're probably looking at the ICM or something along those lines.
Just have your PCM fixed. Most tuners can fix it no problem. And if I had to buy new, I'd buy a NEW GM PCM.
Like I said, do yourself a favor and have yours fixed.
Just have your PCM fixed. Most tuners can fix it no problem. And if I had to buy new, I'd buy a NEW GM PCM.
Like I said, do yourself a favor and have yours fixed.
01-19-2009, 10:59 PM
#15
There is something wrong with that. $109 for a PCM? No way. They're probably looking at the ICM or something along those lines.
Just have your PCM fixed. Most tuners can fix it no problem. And if I had to buy new, I'd buy a NEW GM PCM.
Like I said, do yourself a favor and have yours fixed.
Just have your PCM fixed. Most tuners can fix it no problem. And if I had to buy new, I'd buy a NEW GM PCM.
Like I said, do yourself a favor and have yours fixed.
Nothing wrong with that at all. I have gotten them through Auto Zone in the past. They are reman GM units with a warranty for roughly $120. They do take your old one as a core.
01-20-2009, 10:00 AM
#19
The only problem with those PCM's is that they do not have any kind of file in them,or at least they didnt use to, All you had to do is take it to the dealer and have them flash a stock tune into it but here it cost $100.00 I tried to upload a file with tuner cats and LT1 Edit and it would not take it until I got it flashed at the dealer....