Just replaced fuel pump.. now blowing fuses

[thebutcher37]

Hey everyone what could be the problem?

I just replaced my fuel pump with a TRE 340

and the car was running fine as soon as i changed it but last night cut-off right out of nowhere.

blew a fuse last night checked #11 fuse, was burnt so changed it car started right up

this morning started car , and it would start and just shut off.. checked fuse and it was about to burn out so i replaced with a higher 30amp and it started and drives fine now, but im about to change it back to a 10 amp just to be safe.. what could this be? what should i do/check?

[jeffw]

make sure everything is hooked up correctly and there is exposed wires.

[thebutcher37]

Dun Dun Dun....

ohkay!... i had to work so i drove it to work and then home with a 10amp fuse..

my bad idk what i was writing earlier.. i had meant i only had a 15amp.. NOT a 30amp i was confused i guess, and made a typo..

i planned on checking it when i got home but on the way home i felt like i ran over road debris.. and my car kinda felt shaky in the drive line...

so when i got home jacked up the car i found that my gubio EXPLODED!!!

Damn its like I never get ahead!:hitler:

[ak-]

Oh wow LOL.

[bmw325csi]

WTF happened to you guibo, cheese and crackers! be sure to change the center support bearing while your there!

[thebutcher37]

WTF happened to you guibo, cheese and crackers! be sure to change the center support bearing while your there!

UGH.. more work... LOL :p

New drive shaft FTW... Tee HEE

[Simon S]

Bumping an old thread..

Same deal after installing a TRE pump.

At first – 7.5A fuse would fail after ~60 seconds.
After cleaning/replacing connections at fuel pump – and cleaning ground point behind rear seat, fuse would fail after 20-30 minutes (some improvement)

I contacted Nick North of TRE – and was informed that the pump typically draws between 10-12 amps.

I’m going to try a 10 amp fuse – if it works, great – otherwise I really don’t want to jump up more than 5 amps on factory wiring. Can’t find anyone that makes a 12A mini spade fuse – which would be ideal. Installing a 15 will be my last, LAST resort..

[Simon S]

Follow up: put 1-1/2 hours run time on today with a 10 amp fuse. Ran fine. I'm happy.

[vpilarrt]

18 gauge wire is rated for 16 amps. I'm sure the factory wiring is more like 14 or 12 gauge which is rated for 32 or 41 amps, respectively. No worries.

[Simon S]

cool

[thebutcher37]

Ha.. thanks for updating this guys....

I have a very nasty habit of not remembering to post resolved topics..

hope this helps others.

[Simon S]

No prob -
You still runnin' on a 10A ?

[thebutcher37]

No prob -
You still runnin' on a 10A ?

You know what... I went to double check because i was sure there was a 15amp

but to my amazement there was a 30amp fuse.


So, I wouldn't recommend to put a 30amp...

but I know that the car was ran with this for quite a while...

I now changed it back to a 10amp and the car started and idled... so

10 amp is where it stays!

[Simon S]

lol
10-4

[cwhiteboy]

Just found this thread, had the exact same problem after installing a new TRE fuel pump, and just got done spending hours checking all the wiring for a short. Gonna put a 10A in there and have a backup 15amp just in case. Thanks guys, i was really starting to get frustrated.