I HAVE A CODE 12.~ No reference pulses to Electronic Control Module (ECM).
#1
Junior Member
Thread Starter
Join Date: Apr 2004
Location: Lexington Kentucky
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 RS Camaro
Engine: 305
Transmission: Automatic
I HAVE A CODE 12.~ No reference pulses to Electronic Control Module (ECM).
I need help! My car will run on for a hour or so and then it will be choked out and die by no fuel....meaning a signal was being sent to do so.....well i did the paper clip rig and counted the flashes and i got a code 12 which is 12. No reference pulses to Electronic Control Module (ECM). WTF does that mean and how can i fix it!?!? please help!
-Troy
-Troy
#2
Member
iTrader: (1)
Join Date: Feb 2001
Location: Dayton, OH 45431
Posts: 408
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 Camaro Z28
Engine: 5.0 TPI (LB9)
Transmission: 4L60
Originally Posted by Trizzoy
well i did the paper clip rig and counted the flashes and i got a code 12 which is 12. No reference pulses to Electronic Control Module (ECM). WTF does that mean . . .!?!?
-Troy
-Troy
Originally Posted by Trizzoy
it will be choked out and die by no fuel....meaning a signal was being sent to do so.....
Last edited by Slepewesel; 07-01-2006 at 06:18 PM.
#3
Junior Member
Thread Starter
Join Date: Apr 2004
Location: Lexington Kentucky
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 RS Camaro
Engine: 305
Transmission: Automatic
it feels like it runs out of gas....started back up in like 30 seconds....lasted about 10 min.....did it again....30 secondds.....another 30 secnds and up agian...no smell...no sounds just shuts the fuel pump off. oh yeah i did hte code read and it flashed 12 over and over and over....it did it 3 times a piece.
#4
Banned
Join Date: Jun 2006
Location: Sherman, Tx - N. of Dallas
Posts: 499
Likes: 0
Received 0 Likes
on
0 Posts
Car: Blue 89' RS
Engine: 5.7L
Transmission: 700r4
Axle/Gears: 3.42
check the fuel filter? strange. It sounds like what happened whenever i pulled a fuses out of my two tbi's and my fuel pump ( i was changing the fuel filter, had to get the pressure out)
#5
Senior Member
Join Date: Jun 2006
Location: Desert Heat
Posts: 503
Likes: 0
Received 0 Likes
on
0 Posts
Car: 90 RS/90 Z-71/73 Vega
Engine: 3.1/5.7 TBI/5.7
Transmission: 700R4/700R4/350turbo
Axle/Gears: 3.23/3.42/3.42
The distributor pick-up coil sends a signal to the ignition module which then sends this info to the computer.If you dont get a signal from the pick-up...ecm cant find a reference signal and shuts down.Something to consider especially if you havent replaced it yet,and engine has some mileage.If you decide to replace the pick up do the module as well.AC DELCO parts only..
#6
Member
iTrader: (1)
Join Date: Feb 2001
Location: Dayton, OH 45431
Posts: 408
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 Camaro Z28
Engine: 5.0 TPI (LB9)
Transmission: 4L60
Originally Posted by jstrdn90rs
AC DELCO parts only..
Check your fuel pressure also.
#7
Originally Posted by Slepewesel
It means there are no trouble codes stored in the computer. Are you sure you counted right? You do know that each code will flash 3 times, right?
That's fairly consistent with the symptoms, too. Running for a period until warmed, complete ignition failure until cooled, then restart and running again until it's warmed.
Just as as jstrdn90rs advised, the pickup coil and reluctor are suspect. The HEI switching module is suspect, and even the ignition coil is suspect.
Trending Topics
#9
Re: I HAVE A CODE 12.~ No reference pulses to Electronic Control Module (ECM).
I have a 1994 chevy s-10 4cy automatic transmission, when I drive it for 30 minutes the transmission slips out of gear. I can cut the engine off and start it up again and it drives for a little bit longer then slips out of gear. I can continue to do this this for a couple of times then it has to sit for a long period of time. The fluid is clean and no signs of burning. I put the code reader on it twice and it comes up code 12. I talked to our mechanic at work and he says there is nothing wrong with the truck (ok) it has to be the gear shifter allowing it to slip. I am no mechanic but I don't think he is either. any ideas on what maybe the issue
#13
Junior Member
Re: I HAVE A CODE 12.~ No reference pulses to Electronic Control Module (ECM).
Matthews1...My 1994 Cadillac Deville & a 1984 Chevy C-10 I purchased for my oldest son for his 17th Birthday had similar issues. The Cadillac had this issue after I did a transmission filter change. Then I realized I had refilled it with the wrong fluid type. The only universal ATF fluid that seems to work with all of my vehicles and previous vehicles has been " Valvoline Maxlife ATF Synthetic" and 1/4 bottle of Lucas Transmission Stop Leak. The C-10 I purchased was doing the same thing, but I had noticed when I had inspected it. That behind the seat the previous owner was using Dex IV, so him selling it to me for $750, because "it needs a new transmission" was no problem. After I had it towed home. I went to Walmart and purchased the above cocktail and have had no problem since out of the C-10's tranny. Just food for thought. Ps...I used the Lucas because I figured with my infinite wisdom it probably contained additives that might be needed, that may not be present in the right amounts in the non-dealer brands. here are the previous and some of the still owned vehicles the cocktail worked with: 1994 Lexus 400, 1994 Cadillac Deville, 1986 Olds Cutlass, 1979 Pontiac FireBird, 1986 Pontiac Fiero, 1992 Camaro RS, 2002 Monte Carlo SS, 1997 GMC Z71, 1984 Chevy C-10, 2006 Dodge Charger 3.5, 1982 Cadillac Eldorado, 1986 Chevy S-10,and 1974 & 1977 Olds Delta 88. All of these vehicles I have used Valvoline Maxlife ATF Synthetic & Lucas Transmission Stop Leak without any transmission issues. Of course they never had any issues to begin with except for the little metal shavings in pan.
Last edited by ken5; 12-16-2019 at 11:29 AM. Reason: Comment directed to Matthews1
Thread
Thread Starter
Forum
Replies
Last Post