my car dies every once and a while i can hear the fuel pump relay click then my car burn what fuel is left in the lines and dies i cannot figure it out i have replaced it and it made no difference it always seems to do it when i am at a stop light or leaving the light please help

 

bump

 

When the engine stops running, air stops coming thru the vane in the AFM which in turn means the vane goes full closed which in turn means the mico switch in the AFM OPENS and removes the ground signal to the Circuit Opening Relay which in turn means the relay OPENS cutting off voltage to the fuel pump which in turn means you now should know why the Circuit Opening Relay makes a click when the engine dies.

 

holy crap that was the most intelligent way i have ever seen anyone put an answer i would have just said its clicking off

 

ok so my car still does this problem its really anoying and i pulled off the afm and replaced it i checked wiring and i just cannot figure it out it will click off and click back on now then sometimes it will get a wild hair up its *** and it will click off adn i have to turn off the ignition and start it back up it wont just start up the ignition has to turn off then turn back on in order to start back up help me please

 

ok so my car still does this problem its really anoying and i pulled off the afm and replaced it i checked wiring and i just cannot figure it out it will click off and click back on now then sometimes it will get a wild hair up its *** and it will click off adn i have to turn off the ignition and start it back up it wont just start up the ignition has to turn off then turn back on in order to start back up help me please

 

ok so my car still does this problem its really anoying and i pulled off the afm and replaced it i checked wiring and i just cannot figure it out it will click off and click back on now then sometimes it will get a wild hair up its *** and it will click off adn i have to turn off the ignition and start it back up it wont just start up the ignition has to turn off then turn back on in order to start back up help me please

 

Jumper the fuel pump check connector and leave it jumpered. Go for a ride and see if you still have the problem.

 

while you folks are on the topic, i am doing an S4-S5 swap. Can you tell me where the fuel pump relays are on each model. The FSM doesnt show it on the S$, only the S5...and I dont have an S5 realy.....might need one?

 

its up underneth the dash nex7 to the brake pedal the brake light switch is actually next to the relay its bright yellow

 

really?? the S5 manual tells me it is on the passenger fender well.

 

Oh, my fault, I meant the fuel pump relay resister. On the S5 it shows it on the fender by the pressure sensor. I do not see this on my S4 as it stands.

 

help me please!!!

 

could it be the relay itself...did you ever try replacing that...just a total wild *** guess.

 

Did you do what Hailers said in post #8? If not, why are you still asking for help?

S4 NA's don't have the fuel pump speed control sysym

 

we had already replace the relay under the dash. hes also checked the afm the connections at the fuel pump. the issue didn't start happening until he went with the T3/T4 turbo.


could be the flux capacitor but that thing runs a 175,000.LOL




http://kalecoauto.com/index.php?main...products_id=28

oh i forgot about the blinker fluid resivour. hmmm could be that too.

http://kalecoauto.com/index.php?main...&products_id=6

 

Did you test it before you replaced it? Or have you replaced a perfectly good relay?

There are no AFM connections at the fuel pump...

There are instructions in the FSM for checking the AFM to make sure the fuel pump safety switch in the AFM and that the circuit opening relay it controls are working proprtly. And then there's Hailers' simple little test...

 

im sorry i mean that he checked the afm connections and also the wiring at the fuel pump. sorry NZ. the relay was good because we pulled it out of my running car to test. i did through his in mine and haven't had any issues with it though. he hasn't been by in a few days but i will test that for him. it doesn't happen all the time from what he tells me its just kind of an intermitant thing though.??????

 

So jumper the fuel pump check connector and leave it that way for a week or so. If the problem stops occuring then it's most likely an loose or dirty connection in the AFM causing intermittent interruption of the safety switch circuit.

 

oh ok ill let him know when he comes by. thanks.