slowpoke
(Member)
05/16/15 08:07 PM
mpi fuse keeps popping

Alright guys I got my car all back together and I went to start it and nothing happened. Mpi fuse keeps popping. I've checked a few things and a couple different threads but the information leads no where. Any tip or info would be great.

Yao
(Senior Member)
05/17/15 10:49 AM
Re: mpi fuse keeps popping

try this:

click


89Mirageman
(It's no Mirage, man)
05/17/15 11:06 AM
Re: mpi fuse keeps popping

Did you replace the fuel pump while the car was down by chance? I did this on a 90 GSX several years ago and accidentally pinched one of the wires while putting the metal cover back on and it kept shorting and popping that fuse every time I hit the key. Just a thought.

slowpoke
(Member)
05/18/15 09:07 AM
Re: mpi fuse keeps popping

Thanks for the link I'll follow this. Got it narrowed down to the mpi circuit off the ecu but I keep finding broken wires and more bs than I wanted.

No I didn't replace the fuel pump in this build not yet anyways. I plan on selling it once it starts and runs


slowpoke
(Member)
05/26/15 04:48 PM
Re: mpi fuse keeps popping

Problem solved

SouthCaliVR4
(Gas Analyzer)
05/26/15 06:44 PM
Re: mpi fuse keeps popping

What solved the problem? That others may know in the future.

MuffinMan7580
(Member)
05/26/15 08:33 PM
Re: mpi fuse keeps popping

Yeah, what was the deal?

slowpoke
(Member)
05/30/15 02:20 AM
Re: mpi fuse keeps popping

It was self inflicted. A stock boost solenoid wiring was under the battery when I tightened it down and shorted to the battery tray causing it to pop.

WaRrIoRs16
(Member +)
05/31/15 11:40 AM
Re: mpi fuse keeps popping

Same thing happened to me except the solenoid fell down to the axle. It would allow me to start the car and try to drive it and then when the axle turned and knocked the solenoid to just the right spot it would short. PITA to find. We were troubleshooting it in the dark and saw the spark was how we noticed it.

slowpoke
(Member)
06/02/15 10:46 PM
Re: mpi fuse keeps popping

Yea we took the harness all out of the loom and everything and just so happened to see the connector under the battery sticking out.

dsm1990tsi
(Newbie)
06/14/15 08:43 PM
Re: mpi fuse keeps popping

I had a similar issue and found wiring by the ecu rubbed through and caused the fuse to blow.


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