How noisy is your fuel pump?

[CWLONGSHOT]

I was at a rock store today, buying pavers and border stones. I took the MJ and 2WD LO was quite useful!! The MJ handled the weight great, no objections what so ever.

 

BUT.. as it sat there idling as I loaded the bed with the stone. I noticed quite a bit of noise from the fuel pump. So much so, the kid there helping me commented on it. Asking if I had something special for a pump. From the rear, its about as loud as the exhaust at idle.

 

SO, I wondered, how loud is yours??

 

CW

[juan]

CW - I know you just installed a new tank in your MJ, Let me remind you that not all aftermarket tanks are created equal - I had a similar problem in my xj and this is what I did back in 2002 and to this date is working very well...

 

http://www.jonfund.com/forum/ubbthreads.php?ubb=showflat&Main=38&Number=320#Post320

[HOrnbrod]

Nice cure Juan. CW, as far as noise for mine, the only time I hear it is when I turn the key on before starting. Do you have your ballast resistor still wired in the fuel pump circuit? The drop in operating voltage quiets it down quite a bit after starting.

[CWLONGSHOT]

YUP! I checked that first thing after in swapped in the new pump. Checked that it wasnt broken that is as I knew it was there.... :D

 

THX Juan!! :brows:

 

CW

[HOrnbrod]

Just for kicks and grins, check the voltage drop w. a DMM across the ballast w. the engine running. You should see about a volt or two. Might not being relay switched in the circuit on IGN RUN. :eek:

[glundblad]

Mine is pretty noisy. I was going to post this question myself.

 

I remember it was always noisy even when new. It sounds as if I have a leaky air brake and yes, I would say it is as loud as the exaust. I have a new tank that was installed at the dealer about 4 years ago when my dad owned it. I have no idea if it was OEM or aftermarket. I assume it was OEM. I might crawl under there and check later. Thanks Juan. My fuel pump is pretty new too and the dealer installed it.

 

My son saw an old rusted Cherokee POS drive by and he said it sounded exactly like the Comanche, fuel pump and all. I always assumed it was normal.

 

But yes, it is annoying. And sorry CWLONGSHOT, I am glad to hear that someone else has the same problem. :waving:

[ratrapp]

my factory fuel pump was pretty quiet.the first time it went out i replaced it with a mopar pump and it was quiet.that pump lasted about 6 years and when it died i put a carter pump in it from the local federated store and it's louder than my 255 lph pump in my mustang.as long as it works i can live with it.

[CWLONGSHOT]

my factory fuel pump was pretty quiet.the first time it went out i replaced it with a mopar pump and it was quiet.that pump lasted about 6 years and when it died i put a carter pump in it from the local federated store and it's louder than my 255 lph pump in my mustang.as long as it works i can live with it.

 

I think I'm on the fourth pump and second tank...... The blooming things last 6mo to a year then give up the ghost.... Next time I think I'll bite the bullet and spring for a mopar unit.

 

CW

[ratrapp]

i'm on my 3rd pump and 2nd tank.

[HOrnbrod]

Does anyone manufacture a poly tank for MJs? Seen them for CJs but never for our rigs. I'd get one in a heartbeat if I could find one.

[ratrapp]

try justgastanks.com.i got one made from plastic for a customers 78 j20.no one else made anything even out of metal except them.

[HOrnbrod]

try justgastanks.com.i got one made from plastic for a customers 78 j20.no one else made anything even out of metal except them.

 

Been there - nothing for MJs.

[cracker]

Sorry about bringing this back from the dead but.....

 

I have noticed more recently that the fuel pump is pretty loud but seems to have just recently gotten this way.

 

Has anyone noticed that the fuel pump instantly getting louder is a sign of it about to fail?

[ratrapp]

my carter had gotten loud and it died just a month ago.i replaced it with an airtex and it's pretty quiet so far.