fuel pumps going out

[89SHO X2]

this is the 3rd fuel pump i have put in my '94. ran great for a couple weeks and went out. bought new. replacing now with a walbro from my old '89 sho. ideas of what is causing this?

 

[89SHO X2]

i was pondering a thought on my:wave:. i read on line about pumps the atx had a 65lph pump. the one i bought was stock i am pretty sure. thinking they burned out dew to not being able to keep up with the engine. mine has a cold air intake with 80mm maf. have a modified comp. and a cam swap. too much hp for a stock pump. my walbro kept up great with my old sho producing around 300hp. what do you all think?

 

[LOUDSHO92]

The pump may be weak but the mods are not much. Why do you say the pump is bad?

 

[89SHO X2]

pump died

 

[missouri89sho]

Just had similar problem with my 89 - the wiring harness feeding the fuel pump was fried.

 

[LOUDSHO92]

I did replace my fuel pump as it went out. Then it didn't start due to a short in the system. Got that fixed only to have it die again due to the inirtia relay going out.

 

[Ocnaj]

Are you sure you don't have any wiring issues? Give direct power to the pump via the 2 pins closest to the passenger side, can't remember which is positive though. It will run either way but the correct way will put a load on it and you'll here it bog down a little.