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Old 12-09-2009, 04:34 PM
epiphaknee epiphaknee is offline
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Join Date: Dec 2009
Posts: 84

A bad fuel pressure regulator can cause unsteady idle, poor MPG, loss of power, surging. You must have the CPI engine.

Just pull the intake plenum and look for washing. The gas will wash out, typically on side or the other. If you replace the FPR consider replacing the nut kit too (the two hoses that bring fuel into the plenum). Replace the plenum gasket, clean out the plenum and it is off to the races.
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