Fuel Pump Fuse

[rash]

Hi everyone,

Ive got this issue with my fuel pump fuse.

to keep it short and direct - we installed a new battery - initially did it the wrong way( wrong terminals) removed it in seconds!

connected the battery properly (proper terminals) - then everytime we start the engine - it cranks but does not start.

observed the fuel pump fuses beside the battery and realise its blown - replaced it and it blows again.

in short everytime we replace the fuse and turn the ignition before even starting the engine the fuse would blow.

Do assist please, its really frustrating how a simple task can cause such crazyness..

cheeers folk...

in advance merry xmas!

[shyr33]

Um so you didn't touch/change the fuel pump anytime recently? Wrong terminals as in the positive was put on the negative terminal of the battery and vice versa?

[mad082]

you may have cooked a wire somewhere in the wiring and it's shorting out when you replace the fuse and give it power again. i would try unplugging the fuel pump and then replacing the fuse and trying it then just to see what happens.

[rash]

Um so you didn't touch/change the fuel pump anytime recently? Wrong terminals as in the positive was put on the negative terminal of the battery and vice versa?

nope did not...

yes wwrong terminals as in what you mentioned..

everything else seems fine in the car, no other wire issues or accessory problem.

only thing that goes wrong is the fuel pump fuse keeps blowing when ignition is on.

[rash]

you may have cooked a wire somewhere in the wiring and it's shorting out when you replace the fuse and give it power again. i would try unplugging the fuel pump and then replacing the fuse and trying it then just to see what happens.

allright will try that.

see if the fuse blows then.

another method to diagnose further...

[rash]

allright will try that.

see if the fuse blows then.

another method to diagnose further...

disconnected the fuel pump n still the fuse for fuelpump blows ! Sheesh...

Could it some funny drama sent by the ecu? Any idea?

[mad082]

if you do have a spare ecu you could try then i would. there is a small chance you have damaged something in the ecu

[FloRida]

I don't have a spare ecu... How else can I troublshoot the problem? Btw how much does a used ecu cost? ATM I extreamly tight on budget... I am looking for the most cheapest way to solve the problem...

[rash]

I don't have a spare ecu... How else can I troublshoot the problem? Btw how much does a used ecu cost? ATM I extreamly tight on budget... I am looking for the most cheapest way to solve the problem...

true tat... he spoke for me... ny other methods to bypass ecu just to get it running

[BH_SLO32]

It wont be the ECU as it only earths the relay trigger. You will need to find the short by a process of elimination. Power is feed to the fuse and then to the relay. Try unplugging the relay and connect a new fuse. If it blows again it implies there is a short in the wire connecting the fuse and relay. If it doesn't blow, you will then need to check the wiring from the relay to the fuel pump.

[rash]

It wont be the ECU as it only earths the relay trigger. You will need to find the short by a process of elimination. Power is feed to the fuse and then to the relay. Try unplugging the relay and connect a new fuse. If it blows again it implies there is a short in the wire connecting the fuse and relay. If it doesn't blow, you will then need to check the wiring from the relay to the fuel pump.

the relay is the one beside the battery am i right ?

only one relay beside the battery area, and a buncha fuses.

i will try that asap.

thanks...

[rash]

the relay is the one beside the battery am i right ?

only one relay beside the battery area, and a buncha fuses.

i will try that asap.

thanks...

tried it without relay, and fuse did not blow.

also got a new relay and tried - all cool. fuse did not blow. engine cranks but does not start.

do you think it cud be there fuel pump ?