Have a 1989 Grand Marquis with a fuel pump(?) problem...

The pump runs constantly (power off, key out) this of course drains the battery dead.

Replaced the pressure regulator this summer (no fix) what should I check next?

 

you may need to replace the starter solenoid (the round block that the positive battery cable bolts to). I may be mistaken, but I think that controls the ignition power for the car.

 

your fuel pump relay is stuck switched on. it is located under the hood on driver side fenderwell area. there is a group of relays and it is a mint green looking one. $15 from parts store

 

ah... that's what that relay is for. what's the other one for?

 

Make : MERCURY Model : GRAND MARQUIS Year : 1989 Build Dates : 0000-00-00 - 0000-00-00 NHTSA CAMPAIGN ID Number : 07E064000 Date Owner's Notified: 2007-10-15 Date Received by ODI: 2007-08-27 Date Added to Database: 2007-08-24 Manufacturers Involved: FORD MOTOR COMPANY Manufacturer's Responsible for the Recall: Manufacturer Campaign Number: Component: FUEL SYSTEM, GASOLINEELIVERY:FUEL PUMP Potential Number Of Units Affected : 34000 Summary:
CERTAIN FEDERAL-MOGUL AFTERMARKET FUEL PUMPS SOLD UNDER THE BRAND NAMES OF CARTER, ACCUFLOW, NAPA, TRUFLOW, PARTS DEPO, AND PARTS MASTER, SHIPPED BETWEEN AUGUST 2006 AND JULY 2007 FOR USE ON THE VEHICLES LISTED ABOVE. THE FUEL PUMP DIAPHRAGM IN CERTAIN PRODUCTION RUNS MAY HAVE BEEN IMPROPERLY INSTALLED OR INADEQUATELY TESTED WHICH MAY CAUSE THE FUEL PUMP TO LEAK. Consequence:
A LEAKING FUEL PUMP COULD CREATE A VEHICLE FIRE HAZARD. Remedy:
FEDERAL-MOGUL WILL NOTIFY OWNERS AND REPLACE THE DEFECTIVE FUEL PUMPS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 15, 2007. OWNERS CAN CONTACT FEDERAL-MOGUL AT 248-354-7700. Report Initiator: MFR E Report Regulation Part Number: Federal Motor Vehicle Safety Standard Number:

 

I think this is nice version.

Term Papers

 

Full size premium [but if you need a rental why not a cheapo like hyundia sonota it is nice comfortable and easy on gas and wallet and seats almost the same number of people 5 instead of 6.