Gen II Swap Guys -- Fuel Pump Prime Options

[Fastbird]

For you guys with the Gen II GTE, do you have a circuit wired up for your fuel pump to prime for 2-3 seconds with initial key on engine off??? I've noticed that on a cold start my car has a mofo of a time starting and I can't hear the pump prime or anything. Car has to try to suck fuel through the system to get it going and it sucks. I never bothered to notice before if (when stock) the pump was wired for a prime or not when the key was initially flicked on, but it sure doesn't now and makes for difficult cold starts.

Any help would be appreciated. Trying to get the last couple little things straightened out on the car.

[brianforster]

it would not a throw a code.

it is a temperature sensor that basically tells the cold start injector to fire when the coolant is a certain temperature. if it is broken then the cold start injector will not fire and you will have issues starting a cold motor. when the coolant is cold enough the switch grounds out and that tells the ecu to fire the cold start injector.

to test it, the only way to test it that i can think of is to ground out the ground wire on the sensor (i think its green, check the wiring diagram) as that will trick the ecu in to firing the cold start injector, if this works repalce that sensor.

junkyards usually sell them for 5$ though so not many people try and test it.

edit: sounds like your cold start injector to me, the switch is the most common fault.

This post has been edited by brianforster: Nov 29, 2006 - 1:18 PM