I was told that if you have power between the fuse posts, then the ovp was working. I was also told that you can remove the ovp and try the car briefly without it. It was worse without it on my car. (Although worse than dead is hard to imagine.)
I would like to know how to test the air flow meter rather than pay the big dollars to replace that part.
Good luck, (to us all).

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VR
1967 250SL