2 Problems solved, then 2 new appears.....

[__Larsson____]

Okey so this is whats happening, fixed the brakes with new mastercylinder on my Charger and changed the leaking radiator.

Drove out for the first time from the garage and took it for a short test drive like 50 meters andr returned to the garage, checked the oil level in the transsmisson , turned it of and added som more, started the car and then it died....... now sign of life at all. I have not a original electrical system in the car, it was made here in sweden. The cause of the car died was a "head fues" on the big wire that comes from the battery and gose to the starterrelay.

I have also changed the alternator to a 100A ONE Wire alternator.

Any ideas?

 

[oldbee]

Wow, pull all your fuses, look for any other wires melted. Put new head(?)fuse in, turn key on; if new fuse stays ok then add one fused circuit at a time. May need more info.

 

[Cranky]

The fusible link blew out?

 

[oldbee]

The fusible link blew out?

Language barrier probably (?) paternal side of family came from Nordic area, gotta help if I can!

 

[steve340]

Did you route that alternator charging feed direct to the battery?
If not you send 100 amps through the standard dash wiring and amp meter - something will burn out.

 

[Maxrat]

The fusible link blew out?

I was thinking the same thing

 

[__Larsson____]

Okey i have now put in a new wire from the alternator to the battery. And i disconected the old one and now all seems to work fine.... BUT now low oilpressure...........

 

[steve340]

Put a mechanical gauge in the engine and check it that way to be sure.
If your gauge was the standard one in the dash perhaps it was damaged by all that power going in to the dash wiring?

 

[Shorthorse]

Put a mechanical gauge in the engine and check it that way to be sure.
If your gauge was the standard one in the dash perhaps it was damaged by all that power going in to the dash wiring?

Steve, not to nitpick but at some point Larsson had a major short which caused the fusible to go open. The alternator size was not the cause. Amps are a measurement of consumption, not a measurement of pressure. Any device draws only the amps it needs to operate. The alternator responds in kind. If that device is defective or has a bad connection then it will draw more amps than normal up and to the limit of its fuse. You could put a 1000 amp alternator on a car but it will only respond to the demand of its devices. Think of it this way. A typical car battery which is common to all devices in a car has a standing capacity of lets say, 500-900 cranking amps. Those amps aren't being pushed into the cars electrical system when to turn the ignition switch on.

 

[__Larsson____]

Put a mechanical gauge in the engine and check it that way to be sure.
If your gauge was the standard one in the dash perhaps it was damaged by all that power going in to the dash wiring?

I dont have the original, i have a kit from DAKOTA DIGITAL =P I showed 14PSI at the lowest on idle, but i think it maybe the carburetor cause the idle gets lower and lower when getting hot, like 400 rpm when i showed 14 PSI

 

[steve340]

Did it always read that low or only after the wiring issue? I was wondering if the short caused a voltage spike or a backfeed that damaged other components of the instrument panel.
My 440 has about 30 psi at idle hot.
At the end of the day you need to make sure you have enough oil pressure or your engine may fail.

 

[Cranky]

I dont have the original, i have a kit from DAKOTA DIGITAL =P I showed 14PSI at the lowest on idle, but i think it maybe the carburetor cause the idle gets lower and lower when getting hot, like 400 rpm when i showed 14 PSI

Did it always read that low or only after the wiring issue? I was wondering if the short caused a voltage spike or a backfeed that damaged other components of the instrument panel.
My 440 has about 30 psi at idle hot.
At the end of the day you need to make sure you have enough oil pressure or your engine may fail.

It's barely running at 400rpm so yeah, it could show low PSI on the gauge.....so, don't let it run that slow because not only is PSI low but so is flow and very low flow means the top end usually suffers the most.

 

[MarPar]

Dont you just love old cars lol