Car stalling, jerking and suddenly dies

ChuddyChuddy Member Posts: 1
edited December 2018 in Ford
Hi, my 2005/2006 Ford focus hatchback car developed a stalling, jerking and sudden stop problem after installation of a catalytic converter and for 5months running. I have changed the spark plugs, ignition coil, fuel relay, used 9fuel pumps, changed slow jet, changed air collector, used 2 fuel pump casings, inner & outer fuel filters and changed the brain box all to no avail. I have also washed my fuel tank from clogs. Diagnosis displayed error codes PO230, P1100 & P720. Please, what could be the possible element that reduces voltage to the pump thereby overheating it 20-30minutes after working or when the A/C is turned on?
I took voltage readings for the battery, relay, inertia switch, alternator and fuel pump. When engine is idle, battery-12.48v & cranking-13.5v. When engine is idle, alternator-12.49v & cranking-13.77v. When engine is cranking, Inertia feed cable before switch-12.92v & after switch-12.84v. When engine is cranking, fuel pump-12.6v & during the stalling, jerking & sudden dead situation- fuel pump-11.6v. The problem is intermittent. it occurs at odd times. Sometimes 20times in a day, sometimes twice, 3times, 40times, but it sure occurs. One cannot predict especially when the A/C is turned on. What are your thoughts on this please?
Sign In or Register to comment.

Your Privacy

By accessing this website, you acknowledge that Edmunds and its third party business partners may use cookies, pixels, and similar technologies to collect information about you and your interactions with the website as described in our Privacy Statement, and you agree that your use of the website is subject to our Visitor Agreement.