At present I'm getting spark to only two of eight cylinders. I'm thinking I might have a problem with my coil packs. I have four coils, each delivering spark to two cylinders (typical "wasted spark" setup). There are five wires coming out of the coil packs...one constantly hot (+) and four that I presume should ground each coil at the correct time thus causing the appropriate coil to discharge. But, when I hook an ohm meter across the terminals I get zero resistance between ANY TWO TERMINALS! It seems to me I should get INFINITE resistance between the terminals. Why does everything seem to be connected together? Bad coil pack or am I missing something?
Thanks,
Bob
How much resistance at coil pack terminals?
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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streetrover
- MegaSquirt Newbie
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a73camaro
Re: How much resistance at coil pack terminals?
Are you using a digital multimeter? There should be X ohms of resistance between the positive and and one ground. There should be 2 times X ohms of resistance between any two grounds. That is because the meter measures through two ignition coils.
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Matt Cramer
- Super Squirter
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Re: How much resistance at coil pack terminals?
And, depending on the coil, X could very well be less than 1 ohm. Make sure your meter can read that low.a73camaro wrote:Are you using a digital multimeter? There should be X ohms of resistance between the positive and and one ground. There should be 2 times X ohms of resistance between any two grounds. That is because the meter measures through two ignition coils.
