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Old Oct 11, 2009 | 09:40 PM
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Default Boost a pump question

I have a problem with my msd boost pump blowing the fuse and melting the power wire it is set about 1/2 way on the boost **** I have a 2004 and unless I spend lots of cash this is the only way I know to get fuel to my procharger help me please any sugestions or ideas would be great! Thanks in advance Scott
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Old Oct 11, 2009 | 09:43 PM
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what size fuse are you running? 20amp or 40amp, what fuel pump? How good are your ground connections?
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Old Oct 11, 2009 | 10:07 PM
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30 amp fuse good call on the ground I'll check it out I have the MSD pump it's adjustable you can turn up the amps I'm not sure if it's to high
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Old Oct 12, 2009 | 10:09 AM
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Crimp the tabs in the fuse holder tighter, (pair of pliers etc) they come very loose for some reason from the factory which causes heat to build and melts it down. The fuse wont blow because it is not over amped, just over resisted.
We have done that for years with them and have not had a problem since.
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Old Oct 12, 2009 | 10:14 AM
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Originally Posted by DOUG @ ECS
Crimp the tabs in the fuse holder tighter, (pair of pliers etc) they come very loose for some reason from the factory which causes heat to build and melts it down. The fuse wont blow because it is not over amped, just over resisted.
We have done that for years with them and have not had a problem since.
Thanks your right it was loose that's why the fuse melted down without blowing! Very helpful thanks Scott

Last edited by a/c man; Oct 12, 2009 at 10:16 AM.
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Old Oct 12, 2009 | 10:14 AM
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Anytime..
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Old Oct 12, 2009 | 11:04 AM
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Another good idea is to jumper the stock MSD fuse holder and move the fuse to a more accessible location.
Why they put it right next to the box is beyond me.
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Old Oct 12, 2009 | 11:56 AM
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Originally Posted by corvettebob1
Another good idea is to jumper the stock MSD fuse holder and move the fuse to a more accessible location.
Why they put it right next to the box is beyond me.
Have you ever melted the fuse or blown it
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Old Oct 12, 2009 | 12:04 PM
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Originally Posted by a/c man
Have you ever melted the fuse or blown it
mine melted down. I cut off the fuse holder and added a new one with heavier guage wires all the way to the battery..
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Old Oct 12, 2009 | 01:27 PM
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Originally Posted by chriswtx
mine melted down. I cut off the fuse holder and added a new one with heavier guage wires all the way to the battery..
did that fix it
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Old Oct 12, 2009 | 03:09 PM
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yes been fine for almost 2 years now
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Old Oct 12, 2009 | 07:33 PM
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Originally Posted by a/c man
Have you ever melted the fuse or blown it
Yes it blew the fuse 1 time, when it was mounted on the frame rail behind the L.F. tire.
Found the holder full of water, that's when I decided to move it.
Not fun changing it down there, never had a problem since.
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Old Oct 15, 2009 | 11:34 AM
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I had a MSD BAP go bad (it began to smoke and stopped working), so I replaced it the new one worked fine for a day or two, then would intermentitly stop working, after reading this thread I snugged up the fuse connection and it now works great!

Thanks to all the guys with experiance giving us ideas, it would have been a long time before I thought of that one.

Thanks

Toby
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Old Oct 15, 2009 | 12:59 PM
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Originally Posted by DOUG @ ECS
Crimp the tabs in the fuse holder tighter, (pair of pliers etc) they come very loose for some reason from the factory which causes heat to build and melts it down. The fuse wont blow because it is not over amped, just over resisted.
We have done that for years with them and have not had a problem since.
Used too have the same problems on the cheaper fuses used on amp kits when I worked with car audio.
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