Stumbling and stalling 3.4 V6
#1
Stumbling and stalling 3.4 V6
I have a 2000 Chevy Monte Carlo with a 3.4 liter that is stumbling and even stalling while driving. It will stall in park as well, it fires right back up and go again. It has been getting worse too.
It's not throwing a check engine light and no codes stored in the computer. I've replaced the Intake gaskets fuel filter and fuel pressure is at 45 psi. Plug wires, ignition module, O2 sensors, TPS, IAC valve, MAF, temp and knock sensors and fuel pressure regulator are all new.
What else should I check or look at?
It's not throwing a check engine light and no codes stored in the computer. I've replaced the Intake gaskets fuel filter and fuel pressure is at 45 psi. Plug wires, ignition module, O2 sensors, TPS, IAC valve, MAF, temp and knock sensors and fuel pressure regulator are all new.
What else should I check or look at?
#3
I hooked up a vacuum gauge to it and it reads 14-15 inches of vacuum. According to the gauge that indicates late ignition timing. I checked all the hoses and they are good. Would this be caused by a cam or crank sensor going bad?