fuel pump relay, what does that do?

[Sliding Ninja]

when I step on the gas the car studders like i not gettin the fuel for it to run smooth ,could it be the fuel pump relay or my exhaust system is leaking air.I need some advice

[projectRDM]

You're joking right? The fuel pump relay provides power to the fuel pump, controlled by the ECU's signal.

[Sliding Ninja]

You're joking right? The fuel pump relay provides power to the fuel pump, controlled by the ECU's signal.
then the signal might be funked up thank you fo yo helful advice whore!!

[projectRDM]

Great attitude, how old are you, 12?

You asked a very basic question, and gave the most vague reasoning for asking it. No one can diagnose your problem without a little more insight or at least a better description of the problem.
Not running smooth can be attributed to a dozen different things. Grow up and use some common sense before you come on a web board crying about some weird problem.

[Sliding Ninja]

Great attitude, how old are you, 12?

You asked a very basic question, and gave the most vague reasoning for asking it. No one can diagnose your problem without a little more insight or at least a better description of the problem.
Not running smooth can be attributed to a dozen different things. Grow up and use some common sense before you come on a web board crying about some weird problem.
i said my car studders when i step on the gas, that was a simple question for someone with a world size ego .just becuz you have a 240 don't make you the the baddest mechanic online sissy.

[Yeajimi]

Go get your exhaust replaced. The problem is caused because it isn't up to par for your driving. Go for 3" from cat back... that'll do you right.

[Sliding Ninja]

Go get your exhaust replaced. The problem is caused because it isn't up to par for your driving. Go for 3" from cat back... that'll do you right.
my car doesn't use turbo, so 2 and a half will be useful 4 stock thanks yeajimi no props for post hooker

[kandyflip445]

Wow. You just tried to tell one of the most knowledgeable people on this board off and then you make a SECOND ignorant comment. 3 inch it better on the KA GO SEARCH! Also It could be a number of things. Like you could need gas. For all we know it could be something as stupid as that.

[Sliding Ninja]

Wow. You just tried to tell one of the most knowledgeable people on this board off and then you make a SECOND ignorant comment. 3 inch it better on the KA GO SEARCH! Also It could be a number of things. Like you could need gas. For all we know it could be something as stupid as that.
no one ask you to post any comments now your full of gas.theres no page for your 240 so don't front on your car.

[Sliding Ninja]

Wow. You just tried to tell one of the most knowledgeable people on this board off and then you make a SECOND ignorant comment. 3 inch it better on the KA GO SEARCH! Also It could be a number of things. Like you could need gas. For all we know it could be something as stupid as that.
no ride! just a gay dreamer

[kandyflip445]

Actually my "page" is the link in my signature. And you're about to be banned for calling me gay and guess what! YOU STILL WON'T KNOW WHAT'S WRONG WITH YOUR CAR!

[Shawn_of_the_Dead]

Oh man....that sucks.

[Phlip]

no ride! just a gay dreamer
You get ONE warning, and this is it, next time you decide to try and go to war with those who tried, but deemed you too ignorant to help, I will personally see your stay here to be a short one.

[Sliding Ninja]

You get ONE warning, and this is it, next time you decide to try and go to war with those who tried, but deemed you too ignorant to help, I will personally see your stay here to be a short one.
sorry dudes forgive me for not knowing for what i have done.im a MONSTER

[Sliding Ninja]

You get ONE warning, and this is it, next time you decide to try and go to war with those who tried, but deemed you too ignorant to help, I will personally see your stay here to be a short one.
sorry dudes forgive me for not knowing for what i have done.im a MONSTER roaar!!!

[OdessaS13]

i usually don't do this but ill put this in the simplest way possible.

you are an idiot yes it in bold letter because you are that big of an idiot and using any more of an insulting word would be a waste of grammar

reason: you ask question, get an appropriate response for an answer you could have typed on yahoo and gotten a result in 3 seconds, you tell the person off :fawk2:

[g6civcx]

Most of the fuel pump schematic is described in here: http://www.zilvia.net/f/showthread.php?t=108545&highlight=fuel+pump+relay

In electronic circuits, the relay is a device that allows a small current to control a much larger current. Take our cars for example. The ECU is a very sensitive device that uses very low current. The fuel pump on the other hand draws a lot more current.

So in order for the ECU to control fuel pump current, you need a relay. Otherwise, the ECU has to deal with the task of handling a very large current and supplying that current to the fuel pump. You don't want that large a current flowing through the ECU because it can damage the circuit board.

So the relay's job is whenever the ECU draws current, the relay sends battery power to the fuel pump. This keeps the high current off the ECU wiring and isolates the high current.