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Registered
Join Date: Jul 2009
Location: Stunningly Beautiful Pacific NW.
Posts: 5,293
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Disconnect the VR and go for a run....
I have long suspected that the bouncing tach issue is the result of intermittent shorts, shorting inside the alternator on a bumpy roadbed.
Tach bounces, rev-limiter locks up, car will not re-start absent an ignition off, fully off, for a slow count to 10.
EMI "spikes" due to shorting couples into the nearby ignition trigger.
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