DIY on testing OEM coils
05-25-2008, 11:36 PM
#1
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DIY on testing OEM coils
I have a voltage meter and I would like to make sure my OEM coils are perfect.
Here is the procedure I found in the service manual but what settings do I set my voltage meter at?
Here is the procedure I found in the service manual but what settings do I set my voltage meter at?
Last edited by turborx8; 05-25-2008 at 11:41 PM.
05-25-2008, 11:40 PM
#2
I tried the "Search" function and came up with this,,
https://www.rx8club.com/showthread.p...t=coil+testing
Doesn't mean that the coils could not be failing during high rpm operation.
https://www.rx8club.com/showthread.p...t=coil+testing
Doesn't mean that the coils could not be failing during high rpm operation.
05-26-2008, 12:00 AM
#4
One Shot One Kill
u would set it on resistance, the omega looking thing. as low as possible on the range for the test on no resistance (basically testing that the lines are touching).. on the million/OL. you are testing that the 2 terminals are not touching. i doubt this will be everything for a coil, but it's really the only "test" that can be quantified.
05-26-2008, 12:11 AM
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u would set it on resistance, the omega looking thing. as low as possible on the range for the test on no resistance (basically testing that the lines are touching).. on the million/OL. you are testing that the 2 terminals are not touching. i doubt this will be everything for a coil, but it's really the only "test" that can be quantified.
I switched the setting to "->+" and I got the following readings on termials A/B
Coil #1 - 507
Coil #2 - 512
Coil #3 - 504
Coil #4 - 509
I switched the setting to "->+" and I got the following readings on termials C/B
Coil #1 - 429
Coil #2 - 427
Coil #3 - 428
Coil #4 - 430
I got the following readings on termials C/A
Coil #1 - 504
Coil #2 - 509
Coil #3 - 509
Coil #4 - 506
Last edited by turborx8; 05-26-2008 at 12:24 AM.
(me, for example)
05-26-2008, 12:51 AM
#9
The ">+" symbol is for testing diodes... use the symbol that looks like a "horse shoe" which is the symbol for Ohms that you will use to measure resistance.
Basically... you want the multimeter to show resistance... this will tell you that there isn't a short within the coil. Here is what I measured when I pulled my coils:
Terminals A/B measured 1.6 - 1.7K
Terminals C/B and C/A measured 2.5 - 2.6M.
Basically... you want the multimeter to show resistance... this will tell you that there isn't a short within the coil. Here is what I measured when I pulled my coils:
Terminals A/B measured 1.6 - 1.7K
Terminals C/B and C/A measured 2.5 - 2.6M.
05-26-2008, 12:57 AM
#10
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The ">+" symbol is for testing diodes... use the symbol that looks like a "horse shoe" which is the symbol for Ohms that you will use to measure resistance.
Basically... you want the multimeter to show resistance... this will tell you that there isn't a short within the coil. Here is what I measured when I pulled my coils:
Terminals A/B measured 1.6 - 1.7K
Terminals C/B and C/A measured 2.5 - 2.6M.
Basically... you want the multimeter to show resistance... this will tell you that there isn't a short within the coil. Here is what I measured when I pulled my coils:
Terminals A/B measured 1.6 - 1.7K
Terminals C/B and C/A measured 2.5 - 2.6M.
2000 K
200 K
20 K
2000
200
I set the meter to 20k and I got the following readings on terminal A/B
Coil #1 - 1.53
Coil #2 - 1.58
Coil #3 - 1.56
Coil #4 - 1.57
I can't get a reading with C/B and C/A wiht my meter set to 20k ohm. It just displays "1"
Last edited by turborx8; 05-26-2008 at 12:59 AM.
05-26-2008, 01:05 AM
#11
You got a 1 displayed because you were trying to measure resistance that was ~2.5M with the meter set to 20k.
You need a meter that can measure more than 2M ohms
FYI... 2000k = 2MB ohms
You need a meter that can measure more than 2M ohms
FYI... 2000k = 2MB ohms
Last edited by Jon316G; 05-26-2008 at 01:20 AM. Reason: added info
05-27-2008, 08:48 PM
#17
I just noticed that he (turborx8) has the MazSport Ignition Solution listed in his bio (or whatever you call that field at the bottom) 
Were you just curious if the stock coils were bad?
Were you just curious if the stock coils were bad?
Last edited by Jon316G; 05-27-2008 at 09:47 PM. Reason: added question
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