Posted a few days ago about a reasonable repair cost for new fuel pump my '96 merc. grand marquis. Had it replaced ($430) and problem still exists. Intermittent starting (about every 7-10 days) it won't start up/turn over. It cranks fine, but just won't start. Checked crank and cam sensors, fuses. No problems/codes come up on Scanner. Could it be IAC valve or an electrical problem. Mechanic thought it was the fuel pump. Appreciate ANY thoughts/ideas/suggestions.
look to your fuel pressure regulator. it is located on the fuel intake manifold. It is probably out of adjustment.
Fuel pressure reg. Or week fuel pump do a line pressure test running when you let it sit the pressure will blead back down and you have to crank longer and longer . The loger the reg is bad the harder yuor pump must work to try and build set pressure and your pump will eventualy be on its last leg too
Non adjustable migration judgeroy
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