| Re: MF'r broke down....round two!!! |
Subject: Re: MF'r broke down....round two!!! by Matatk on 2011/6/19 2:37:33 Thanks to Axel for pointing out my incorrect testing. I was reading the FSM and the pictures were blurry (no written step by step). I thought I needed to test secondary resistance from rotor button to tach and rotor button to batt. This is incorrect (if you think about it logically, since there is no resistance between tach/batt the reading will be the same either way) I actually checked the chilton's manual and the tests are better described. 1) Primary resistance test - ohm meter leads connected between batt and tach - this should be close to zero 2) Secondary resistance test - rotor button to batt - my readings for this are infinite, which is consistent with several coils, including Axel's diagnosis of his. Other coils seem to have a specific ohm range, I can't find one for our corvettes. 3) Secondary resistant test - rotor button to ground - should be around 8k, although the FSM doesn't specify this number. If tests #2 and #3 both show infinite, then the coil is bad. |
