Technical Koalar random thoughts

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Technical Koalar random thoughts

Hi koaler success someone had insulated the small thread that fits inside the battery tray with tape presumably to stop it rusting I took the tape off so I could get the bolt off then the gauge instantly went to 3/4 so thanks for your help
 
Hi koaler success someone had insulated the small thread that fits inside the battery tray with tape presumably to stop it rusting I took the tape off so I could get the bolt off then the gauge instantly went to 3/4 so thanks for your help
jim-carrey-ohcome-on.gif
:ROFLMAO:
 
Earth strap, faulty, replacement or not

Yes I know the pictures aren't great, I borrowed someone to crank the car while I photograph one handed

Do a simple voltage drop testing under load

Can be done with a test light or multimeter makes no difference in this case

Here I am going use a test light, for the last year or so it's been may main electrical diagnostic tool

Yes I have oscilloscopes, fluke meters and multiplexers, but for the majority of car faults a test light is better as it shows some current can pass through a wire rather than just voltage present

Yes this is a Suzuki not a fiat, but the principles are the same
IMG_20250725_114031410_HDR.jpg

Attach the light to the battery negative

IMG_20250725_114054672_HDR.jpg


Touch the test light on battery positive, to make sure it's got a good connection and the lamp hasn't blown


IMG_20250725_114250451_HDR.jpg

Scratch some clean metal and crank or try to

Here the earth strap bolt lights up


IMG_20250725_114321536_HDR.jpg


But if put the probe on the cable eye and crank the engine it does not light

The problem is the connection between the earth strap and the block not the earth strap itself


Often people say I've measured the ohms and it's okay, no you proved there is continuity not it's able to carry a couple of hundred Amps

Here the same Suzuki before it was fixed

IMG_20250725_123120492_HDR.jpg


If you are using a multimeter on the volts range. Ideally it should be under 200 millivolts while canking or tying to


There's a video in post 15 of a faulty earth on a panda
 
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