Voltage Stabiliser

suffolkpete

suffolkpete

Member
Every now and then the fuel and temperature gauges on my 1974 2200SC would drop to zero and return to normal after a few minutes. I have changed the voltage stabiliser but the problem still persists. All the other ignition-switched functions seem to work normally. Any ideas what else might be wrong?
 
I would just check the related fuse. I had a situation on my car recently where the same thing would happen along with losing indicators. Turned out the fused holder needed closing up a little. Plan is to replace the four fuse series 1 fusebox with a blade style one with extra stations soon.
 
FOR THE s2 fuse board misbehaving - I made these for the 25A fuse positions. 1/4" brass tube bits stuck on plastic rod or dowel, blade socket soldered on. The 1/4 brass tube is a tight fit in the sockets, difficult to push in. 1 dry joint so far in a couple of years. The solder gives a soft surface to improve contact. I tried the manufactured ones from US, but when the ends are spaced for our sockets the blade fuse contact is small.
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A bit less work is to make these U shaped wires - 1/32" piano wire (hobby shop), bent with needle nose pliers. It ensures that the socket sides are connected electrically and mechanically, because they are NOT mechanically connected , relying on the fuse end for that.
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I checked the fusebox, the contacts were a bit slack, so I pinched them up and replaced the 15 amp fuse with the correct 25 amp one, so we'll see how it goes.
 
suffolkpete said:
I checked the fusebox, the contacts were a bit slack, so I pinched them up and replaced the 15 amp fuse with the correct 25 amp one, so we'll see how it goes.
Click to expand...

Pinching them up won't do much as a the brass 'spades' aren't one piece, the plastic each side of them creates the spring.

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You need to ensure that the brass spades are clean, and more importantly, the fuses are the correct length. The middle one here is too short, so all of the power is going through a reduced contact area and has heated up to such an extent, that the plastic has melted. Some of the fuses rely on the fuse itself to transfer power to the top of the other side (The other spade) so even if the power isn't going through the fuse, just across the top, it can still cause overheating if the fuse is the wrong length.

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part is Keystone 3557. technically 20A, so be aware of that.
Teil ist Keystone 3557. technisch gesehen 20A, also seien Sie sich dessen bewusst.
 
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