Zetec dies without warning

[Off Road SHO]

My Zetec powered Superformance S-1 had a problem similar to yours. Mine turned out to be a poorly seated 8-port wiring connector. Because of the heat generated by a loose connection, the female side of the connector would expand and open up the circuit. As it cooled back down, it would make the connection again. Fuel pump relays that are undersized are notorious for this.

 

Tom

[kayentaut]

I spoke with 1turbofocus today and he made some suggestions I will follow up. I appreciate Off Road SHO's suggestion and will check that also.

[Kitcat]

I second the 1turbofocus idea, wh/you have followed up on. I had 3 years of fueling woes on my SVT Zetec powered Cat until my mechanic called Tom (many times) and they finally got it sorted. It never would have been resolved w/o his help.