96 4x4 Blazer 4.3, no dash idiot lights or fuel pump prime.
#1
96 4x4 Blazer 4.3, no dash idiot lights or fuel pump prime.
Hey guys I have a 96 Blazer 4x4 with the 4.3 Vortec. Well anyways the problem I'm having is when I turn the key to the on position, I get no dash idiot lights, no gauge checks, no fuel pump prime. I already replaced the Fuel Pump, the ECM, the Ignition Coil pack, and the Battery. I checked for spark but also nothing. I noticed when I just bump over the starter real quick that then all the idiot lights come on and the fuel pump will then prime itself. CAN ANYONE PLEASE HELP ME??? I think I pulled out every last hair on my head. THANKS
#5
So I opened up the steering column and tapped on the ignition switch, then everything came on as it should. I then started it but it ran really rough for a minute or so then died. What do you think that could be?
#8
Alright so I replaced the Ignition Switch and now everything works as it should and it starts up fine, BUT.....it runs really rough then dies after a minute or so. I hooked up my code reader and got the code for Low voltage on the MAF and also the Crank Position Sensor. Any thoughts of what I should do next? Now I'm kinda lost.....
The only code I'm getting now is P0341.
The only code I'm getting now is P0341.
#9
P0341 - CMP (camshaft position) Sensor A Circuit Range/Performance
The CKP, CMP, and MAF are all fed off of the +5V reference from the PCM. The TPS, EGR and FTP are also fed off of this reference.
The CKP, CMP, and MAF are all fed off of the +5V reference from the PCM. The TPS, EGR and FTP are also fed off of this reference.
#10
I just installed my old ECM and now its all fine. A tech at the local Chevy Dealership told me that the new reman ECMs need reprogramming before installation so instead I just thru in my old ECM since that wasn't the problem. Thanks for all the help swartlkk......