No spark, all 3 coil packs ohm bad
#1
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No spark, all 3 coil packs ohm bad
1992 SSEi won't start and it has no spark. All three coil packs' secondary windings don't ohm out at all. I haven't had them off yet to check the primary windings but if the secondaries are bad doesn't seem to be much point in checking the primaries! Seems odd that all three should go bad at once though. Can something cause them to short out like this? In other words, if I buy three new ones will they just short out again?
Ya know it'* amazing how much more interesting and fun working on a car is if you don't have to depend on it for daily transportation.
Ya know it'* amazing how much more interesting and fun working on a car is if you don't have to depend on it for daily transportation.
#4
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I'm not sure we can say yes or no to the new ones not shorting out. It'* very odd that you had all three go bad at one time. I don't think we've ever seen those odds before.
Did you check the meter on something else known to be good to confirm it'* operation?
Did you check the meter on something else known to be good to confirm it'* operation?
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Yes, I checked the meter. It normally shows "1" when it'* on and in the OHM position but not touching anything. I touched its own contacts together and it went to "0" (no resistance) Tested it against the alternator case, it went to "0" and checked out spark plug wires with it--it gave appropriate readings (don't remember what) based on their length--i.e., some resistance. It'* a good meter. I can't think of anything that would provide a surge strong enough to short out all three coil packs at once, but none of the three show any kind of resistance or flow. The meter just stays on "1" like you're not even touching anything. Break in the wires somewhere inside.
#6
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If they were shorted out, they'd read zero. Not '1'.
Are you checking resistance between the posts? Not from post to ground? Go post to post and make sure your scale is set appropriately, or on 'auto'.
I seriously doubt all three coils are bad. Try another meter.
Are you checking resistance between the posts? Not from post to ground? Go post to post and make sure your scale is set appropriately, or on 'auto'.
I seriously doubt all three coils are bad. Try another meter.
#9
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Originally Posted by willwren
If they were shorted out, they'd read zero. Not '1'.
Are you checking resistance between the posts? Not from post to ground? Go post to post and make sure your scale is set appropriately, or on 'auto'.
I seriously doubt all three coils are bad. Try another meter.
Are you checking resistance between the posts? Not from post to ground? Go post to post and make sure your scale is set appropriately, or on 'auto'.
I seriously doubt all three coils are bad. Try another meter.
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Originally Posted by kjhansen57
Ya know, this is a brand new digital multimeter and I'm not that familiar with it. Maybe I ought to read the instructions... Hmmm.
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