Vehicle starts and immediately stalls intermittently, of course this is the same Impala I have been having all kinds of problems with, one after the other. *No check engine light. I am going to go through the motions of regular checks (fuel pressure, sensor checks, scans etc). This car has a dual hall effect crank sensor (3x and 18x). The book reads that the lose of either of these signals will prevent the car from restarting at all. It also has a camshaft position sensor that controls SFI. The cam sensor signal can be lost and the vehicle will be able to be restarted and run in Limp in mode. I think I am dealing with a fuel pressure issue although I have not got to this test yet (i am getting there). My question is, I pulled the vacuum line off the fuel pressure regulator and had no change in engine performance, even with throttle snap test. Just wondering if I should chase the cam sensor next if my fuel pressure tests come out okay (considering I have a no code condition)? This stalling issue will happen cold or hot and car will start right back up and run fine. But the stalling is happening more often now but only on start up. Changing the crank sensor on these is a lot of work considering it is behind the harmonic balancer. Any tips my friends?
have the same problem?
Friday, September 23rd, 2016 AT 8:08 AM