Gas Pedal Problem

General discussion forum for J30 and M30 owners!
Xoltol
Posts: 33
Joined: Sun Oct 28, 2007 9:37 am

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Well, recently i changed the fuel pump/filter, and battery, because my car wouldn't start, it would just crank and never turn. After i changed those 3 parts, my Car turns 1/3 tries, but when i press the gas pedal it shuts itself off. Usually what i do is take out the hose and Spray, some starter fluid into both sides of the engine and that usually helps the car starts successfully, but everytime i press on the gas pedal, the car dies out INSTANTLY, any idea what this might be and how to fix it?


littlewillie
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Modified by littlewillie at 10:56 PM 12/23/2007

gr8scott72
Posts: 1220
Joined: Thu Feb 16, 2006 1:37 pm
Car: 1994 Infiniti J30t

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littlewillie wrote:You say it "would just crank and never turn" & "Car turns 1/3 tries, but when i press the gas pedal it shuts itself off". Sounds like you have a bad gas pedal. Try cleaning it before replacing it & maybe it will "crank & turn" like it's suposed too.

Willie
Bad gas pedal? Waaaa?

Maybe he needs to flush his blinker fluid too?

Ebbtide
Posts: 98
Joined: Mon Aug 14, 2006 3:02 am

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I installed high speed muffler bearings and replaced the piston return springs. Runs fine now.


littlewillie
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Modified by littlewillie at 10:56 PM 12/23/2007

Xoltol
Posts: 33
Joined: Sun Oct 28, 2007 9:37 am

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So i would have to simply change the gas pedal? or change the ENTIRE solenoid? cause i dunno how to do the solenoid lol.

gr8scott72
Posts: 1220
Joined: Thu Feb 16, 2006 1:37 pm
Car: 1994 Infiniti J30t

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Xoltol wrote:So i would have to simply change the gas pedal? or change the ENTIRE solenoid? cause i dunno how to do the solenoid lol.
He's teasing you. It's not the gas pedal. It might be the MAF or the throttle position sensor or one of many other things but it is NOT your gas pedal.

Sorry your introduction here was like that. Most people on here are MUCH more helpful.

Does the car have any codes? (Check engine light)

Xoltol
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Joined: Sun Oct 28, 2007 9:37 am

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I dunno how i would read codes, I herd you have to try to start the car, and the check engine light will blink, but mine doesn't.

gr8scott72
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Joined: Thu Feb 16, 2006 1:37 pm
Car: 1994 Infiniti J30t

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Xoltol wrote:I dunno how i would read codes, I herd you have to try to start the car, and the check engine light will blink, but mine doesn't.
what year is your car?

Xoltol
Posts: 33
Joined: Sun Oct 28, 2007 9:37 am

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1993

gr8scott72
Posts: 1220
Joined: Thu Feb 16, 2006 1:37 pm
Car: 1994 Infiniti J30t

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Xoltol wrote:1993
You can find out how to read your codes here:

zerothread/217489

Which is a sticky at the top of the forum, btw.

Xoltol
Posts: 33
Joined: Sun Oct 28, 2007 9:37 am

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Ok i'll go out in the morning, grab the code, and come back.
Modified by Xoltol at 5:21 PM 10/29/2007

littlewillie
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Modified by littlewillie at 10:57 PM 12/23/2007

Xoltol
Posts: 33
Joined: Sun Oct 28, 2007 9:37 am

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Ok i did the diagnostics, and i either got 55 or 54, when i checked the list there was no 55 so i'm guessing it was 54, but ok how do i fix that?

Xoltol
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Joined: Sun Oct 28, 2007 9:37 am

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So i was looking online, and apparently a few people told me that the engine code 55 means that it has "No Malfunction"? if so, then why when i press the gas the engine shuts off, or why can't the car start without spraying the starter fluid into the engine?

Some serious help please, i'm trying to fix this by the weekend.

littlewillie
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Modified by littlewillie at 10:57 PM 12/23/2007

Xoltol
Posts: 33
Joined: Sun Oct 28, 2007 9:37 am

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Ok with the fuel filter, i find that i'm getting NO pressure whatsoever at all. and the fuel filter is new, so is the fuel pump. No fuel is coming out at all so yea it looks like no fuel to engine.. what next?

littlewillie
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Modified by littlewillie at 10:58 PM 12/23/2007

Xoltol
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I've done that several times, and neither of the lines have any flowing fuel in them.

littlewillie
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Modified by littlewillie at 10:58 PM 12/23/2007

littlewillie
Posts: 179
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Modified by littlewillie at 10:59 PM 12/23/2007

littlewillie
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Modified by littlewillie at 11:00 PM 12/23/2007

Xoltol
Posts: 33
Joined: Sun Oct 28, 2007 9:37 am

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Hmm, Definately a fuel pump problem? we replaced the old one with a new one.... but yea we haven't been getting any fuel whatsoever.

littlewillie
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Modified by littlewillie at 11:00 PM 12/23/2007

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95-J30tt
Posts: 463
Joined: Tue May 02, 2006 5:46 am
Car: 95 Infiniti J30tt (Twin Turbo)

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did the problem start right after the fuel pump was replaced, or did it run with the new pump and then died??, if the pump worked and then died, then keep on reading and check out the picture in the link below......

take the easy steps first, check the fuel hoses, fuel pressure regulator, fuel tank cap.... also make sure that the intake piping is all in place, check the air filter for any blockage, and make sure that both vacuum lines running to the fuel pressure regulators are in place (see picture in the link below) ....

if all those checks fail to reveal something, then go ahead and check the fuel lines, pull both of them out (make sure to mark which is which, because one of them is a return line, if they are put backwards, the engine will not start).... turn the key to (ON) but dont start, you should hear the sound of the fuel pump pressurising the fuel lines...

if you dont hear it, then check the fuel injector fuse and the fuel pump fuse, then check the fuel pump, get to the pump (dont remove it yet), check if all contacts are in place and that nothing is loose.....

if all is in order, then it would most likely be a fuel pump failure, get another pump and put it in there, and start her up.....

by the way, which lines did you see to conclude that there is no gas going into the engine???

i've attached a picture of the stock engine with instructions in the link below, i hope this helps

http://www.q45.org/gallery2/v/...dex=1

please post your updates

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95-J30tt
Posts: 463
Joined: Tue May 02, 2006 5:46 am
Car: 95 Infiniti J30tt (Twin Turbo)

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one more thing, it might sound stupid but check it anyway

the alternator might be a problem, if your lights are dim, or they dim after you start the car.... when you start the car, take a multimeter and check the battery terminals, they should give a reading above 13.5 volts

if the alternator is dead, it could cause the engine to die under load or high rpm.....

Xoltol
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Joined: Sun Oct 28, 2007 9:37 am

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Well we replaced the fuel pump, and so far nothing, no buzzing sound that says its on and still no fuel into the engine, anyone know where the fuel pump relay in the J30 is?

nothing new to say so far, its still not pumping with the new one.

Xoltol
Posts: 33
Joined: Sun Oct 28, 2007 9:37 am

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Wooh, Fixed it, got a service manual, pulled out the fuel pump relay and saw that thefuse was burned out, so replaced it and it runs better than before. Thanks for all the help!

littlewillie
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Joined: Wed Aug 03, 2005 12:07 pm

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Modified by littlewillie at 11:01 PM 12/23/2007


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