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Fuel pump or Fuel Pump Resistor

Dragan

Dragan

New member
Hey guys I wanted to know how i could tell if i need a fuel pump or just the resistor the car will run and drive fine sometimes but then sometimes it will stall out and if it does when i turn the key i dont here the hum from the fuel pump and it wont start but then sometimes it will hum and then start. its random really like it will then it wont the price is way more for the pump so any help would be great thanks guys
 


so it has stall while driving?

That issue could be a few things. Your cps sensor can cause that if its going bad.

Maybe you fuel pressure regulator is shot. Pull the vac line off it and see if gas comes out. If it does, then its bad.

Hopefully others will chime in.
 
To rule out the Fuel Pump Resistor...do this and that will put your pump in high speed mode. If it runs fine on this, your resistor is bad. replace it. if not, could be the fuel pump or like cam said, sensors.

hope this helps.
 
yeah it will do it when the car is running but not all the time, it will just stall out and then when i try to start it i don't here the hum from the fuel pump. Other times the car will be sitting and when i go to start it there is no hum and it wont start. But then some times it will start right up and run fine. when i first started having this problem the car was running in park after i had ben driving it and it started to chug for a second and then the rpms jumped up real high then it went back to normal idle. thats the only time it did that
 
sounds like it could be the CPS with the way you describe the RPM changes. RPM fluctuation is a pretty good indication.

try the resistor tab bend thing and see if that helps. if not, maybe it is your CPS or fuel pump. any SES lights??
 


no lights are on and i will tomorrow but do i bend that prong out then start the car or do i do it when its running?
 
bend it out before you start the car because you're going to have to take it out to bend it and it will not run without the resistor in there.
 
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