cosmobius
Member
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- Location
- Tetonia, Idaho
before i begin, i will say that i have read MANY threads and the glow plug testing information in the TMs.
I tested one of the plugs with an ohm meter (i am an electrician and know exactly how to use one) and got a reading that was well outside of the acceptable limits. just to double check, i turned the key on and cycled the gp system then removed the same gp and it was extremely hot. after installing it again warm, the ohm reading was much more acceptable but still not within range. i know that heat affects resistance but the manuals are not clear whether the plugs should be tested cold, warm, or hot. If the plugs need to be within a specific resistance range, i dont see how the test light can be of any use since a light will come on from no resistance to a fairly high resistance. Any help would be appreciated.
Thanks in advance!
I tested one of the plugs with an ohm meter (i am an electrician and know exactly how to use one) and got a reading that was well outside of the acceptable limits. just to double check, i turned the key on and cycled the gp system then removed the same gp and it was extremely hot. after installing it again warm, the ohm reading was much more acceptable but still not within range. i know that heat affects resistance but the manuals are not clear whether the plugs should be tested cold, warm, or hot. If the plugs need to be within a specific resistance range, i dont see how the test light can be of any use since a light will come on from no resistance to a fairly high resistance. Any help would be appreciated.
Thanks in advance!