Not Ranked
if the needle is "bouncing" rather than moving from high to low, it really does sound like an electrical problem (weather that be sender. gauge or earth needs to be investigated)
Buy a gauge like this http://www.ebay.com.au/itm/Pressure-...ht_5615wt_1139
Screw it into the block direct where your sender is and see what a mechanical gauge does.
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Last edited by boxhead; 04-22-2013 at 06:16 PM..
Reason: Wrong gauge.
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