2002 Chevy Tahoe - 5.3L Code VIN Z P0327
Posted: Tue Sep 14, 2010 9:00 am
I Have a 2002 Chevy tahoe 5.3 Vin z Code PO 327 KS 1 Short/low voltage
This Car Is From Another Shop I was Told they replace the 2 knock sensors and this code keeps coming back. I Installed a scanner and the code is there On Data Screen Ks reads 0 Is it a normal valve of 0 or should it be something else. This Also Had A short in the ecm fuse which i fixed the wire harness rub on the the front driveshaft. i repair the harness and we had to replace the ecm and flash it. Also It Has A stalling problem. the other shop told me they replaced the fuel pump and its still doing it. I put a fuel pressure gage on the rail and found that the fuel pressure is only 42 lbs it should be 56 tp 66lbs under all conditions. I am thinking it the fuel pressure regulator.
There Is a zero reading on the knock sensor. I just put a new fuel pressure regulator in and now the pressure is where it should be, But it still stalls when you floor it to pas or if you are driving at 30to 55 mikes per hour.
Any help on this thanks mike A.B.M Automotive 631-878-0713 or http://www.centermorichesgulf.com e mail abmauto@optonline.net
This Car Is From Another Shop I was Told they replace the 2 knock sensors and this code keeps coming back. I Installed a scanner and the code is there On Data Screen Ks reads 0 Is it a normal valve of 0 or should it be something else. This Also Had A short in the ecm fuse which i fixed the wire harness rub on the the front driveshaft. i repair the harness and we had to replace the ecm and flash it. Also It Has A stalling problem. the other shop told me they replaced the fuel pump and its still doing it. I put a fuel pressure gage on the rail and found that the fuel pressure is only 42 lbs it should be 56 tp 66lbs under all conditions. I am thinking it the fuel pressure regulator.
There Is a zero reading on the knock sensor. I just put a new fuel pressure regulator in and now the pressure is where it should be, But it still stalls when you floor it to pas or if you are driving at 30to 55 mikes per hour.
Any help on this thanks mike A.B.M Automotive 631-878-0713 or http://www.centermorichesgulf.com e mail abmauto@optonline.net