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Old 04-14-2007, 07:15 PM   #31
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Quote:
Originally Posted by Archon
No, leave the ignition off, but to test them thoroughly, you have to test the primaries also. You'll have to pull the coils to do that, so you can do both primary and secondary after you pull them.
ok, after driving the car when I tested them again...

mounted on the module readings as follows:
20k

coil 3/6 read 7.18

coil 2/5 read 7.09

coil 1/4 read 7.00

unmounted they were still all 00.0
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Old 04-14-2007, 07:41 PM   #32
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They should read the same mounted or unmounted.

The secondaries are where the spark plug wires attach.
The primaries are underneath the coils & the coils must be removed to check.

If your "unmounted" reading is actually the reading you got when checking the primary windings then you might have to switch the meter to another scale. The primary windings will have a reading less than 1 ohm.

Where in New York are you?
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Old 04-14-2007, 09:03 PM   #33
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Quote:
Originally Posted by Technical Ted
They should read the same mounted or unmounted.

The secondaries are where the spark plug wires attach.
The primaries are underneath the coils & the coils must be removed to check.

If your "unmounted" reading is actually the reading you got when checking the primary windings then you might have to switch the meter to another scale. The primary windings will have a reading less than 1 ohm.

Where in New York are you?
Hey Ted thanks for the reply,
the "primarys unmounted" were removed off the module.. I stuffed electrical wires in the two female inserts underneath the coil to get a connection, they were read on a the meter scale pointed at 200. the secondaries were still on the module with meter pointed on 20k where i recieved different reading as stated above when motor cool and hot.
I'm in new york city brklyn.
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Old 04-14-2007, 10:11 PM   #34
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Rod - I'd have to think that there is some type of measurement error here. The reading of the primaries you have would show that all 3 coils are bad. We have yet to ever see that, and I would think that you're car likely would be running very poorly, if at all.

Were the wires that you used to test solid or stranded? If stranded, make certain that no tiny strands from each piece are touching each other. I'm not trying to insult you, or your abilities, but experienced techs have done things like that.

If you're certain that it was measured properly, head back to Radio Shack and buy some resistors that are less than 1 ohm. Measure them with the meter, and see if it reads properly then. Perhaps the meter doesn't read properly on the lowest scale.
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Old 04-15-2007, 12:26 PM   #35
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Quote:
Originally Posted by Archon
Rod - I'd have to think that there is some type of measurement error here. The reading of the primaries you have would show that all 3 coils are bad. We have yet to ever see that, and I would think that you're car likely would be running very poorly, if at all.

Were the wires that you used to test solid or stranded? If stranded, make certain that no tiny strands from each piece are touching each other. I'm not trying to insult you, or your abilities, but experienced techs have done things like that.

If you're certain that it was measured properly, head back to Radio Shack and buy some resistors that are less than 1 ohm. Measure them with the meter, and see if it reads properly then. Perhaps the meter doesn't read properly on the lowest scale.
not insulted at all ,I learn as go along "learning gearhead" .not sure what you mean by solid or stranded but, if you are asking if the wires I used were attached together they were not..I used a separate wire for each female insert. I could see the meter read numbers but,end up on 0.00 I would change the number on the meter scale, all it would do is change the decimal position.. I even check the wires were making through out contact by attaching one end to the postive cable and sparking it on metal. The car runs good only thing I notice it shakes on idle. I'll try to use different wires next time and see..however, what about my secondary reading are they odd?
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Old 04-15-2007, 01:04 PM   #36
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Rod, can you please put your year and model in your signature? It has a direct bearing on your issues, and those that read your topic have to hunt for the information.

Click the profile link at the top of the page to access your signature.
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Old 04-15-2007, 01:24 PM   #37
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Quote:
Originally Posted by willwren
Rod, can you please put your year and model in your signature? It has a direct bearing on your issues, and those that read your topic have to hunt for the information.

Click the profile link at the top of the page to access your signature.
will do..Thanks.
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Old 04-15-2007, 04:28 PM   #38
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Stranded wire has a lot of tiny wires in one cover to make a larger diameter wire.
http://en.wikipedia.org/wiki/Image:*..._lamp_wire.jpg

A solid wire will have just one large wire in the cover. If one of the tiny strands from one side touched one of the tiny strands from the other side that you're measuring, it will show a short (0 ohms).

The secondaries are within specs. The resistance will change some from hot to cold.
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Old 04-15-2007, 04:54 PM   #39
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Quote:
Originally Posted by Archon
Stranded wire has a lot of tiny wires in one cover to make a larger diameter wire.
http://en.wikipedia.org/wiki/Image:*..._lamp_wire.jpg

A solid wire will have just one large wire in the cover. If one of the tiny strands from one side touched one of the tiny strands from the other side that you're measuring, it will show a short (0 ohms).

The secondaries are within specs. The resistance will change some from hot to cold.
The wire I used did not have strands.. It was kind of like a solid thin paper clip style wire when I striped the plastic off...I used that one because it would not come apart when inserting it to the very thin female inserts.. I'm wondering now if that would of made a difference in the reading.
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Old 04-16-2007, 02:30 AM   #40
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Nope, it shouldn't make a difference. Get the resistors and test the meter readings with those.
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