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Appropriate amp clamp for ignition system troubleshooting

  • josegumby
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8 years 6 months ago #10897 by josegumby
Hi,

I have a (hopefully) simple question. I have a Honda Element that feels like it has a little bit of a misfire under moderate load ("shudder" under moderate acceleration). I would like to use an amp clamp on the fuse circuit ( Fuse Buddy Mini Current Loop ) for the ignition system to see if I can narrow down the problem to a specific ignition coil (to avoid blindly replacing coils, of course). I already have a 4-channel picoscope, and I am looking at the following two amp clamps:

PICO TA018 amp clamp ($159.00)

PICO TA189 amp clamp ($459.00)

Will the (far cheaper) TA018 60-amp amp clamp work for me to be able to clearly see the ignition system waveforms, or am I going to need the far more expensive one?

I need to revisit the scanner-danner premium youtube pages to refresh myself, but I think having an amp clamp in my arsenal would really be nice. I just want to make sure I have the right one for what I need to accomplish at the moment.

Thanks,

Curt

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8 years 6 months ago - 8 years 6 months ago #10899 by Andy.MacFadyen
The peak current on a coil is normally no more than 10 amps so the low range clamp is all that is required, however you don't need to go for an official Pico all you need is a generic one and BNC to Bannana adaptors and you can save money or see the tools section on this forum.
Link to Amp Clamp in Tools Secion of the Scannerdanner Forum

If you want a BNC connector clamp Hantek do a budget one, just make sure you buy from a seller with a good returns policy in case it arrives DOA.

" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)



Last edit: 8 years 6 months ago by Andy.MacFadyen.
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  • josegumby
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8 years 6 months ago #10900 by josegumby
Great! Thank you!

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  • Dylan
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8 years 6 months ago #10915 by Dylan
I have the PICO TA018 amp clamp ($159.00) and it works great. You don't need that expensive precision clamp.

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