one day my 03 grand marquis ran just fine next wont start ? runs on starting fluid

Asked by Nov 28, 2015 at 08:14 AM about the 2003 Mercury Grand Marquis LS Ultimate

Question type: Maintenance & Repair

My 03 grand marquis ran perfect one day and the next will not start. Starts and runs on starting fluid WHY?

3 Answers

18,570

Clean throttle with spray throttle cleaner add Lucas Fuel Injector cleaner to gas tank.

46,425

Evidently if it runs on starting fluid and stops when starting fluid is gone, it is not getting fuel to the engine or the injectors are not operating. Bad fuel pump, bad fuel pump module, engaged inertia safety switch, bad ECU or bad fuel pump wiring are all possible causes.

1,245

replaced the fuel pump relay first. Also, a scan reading might show if that's it, or the things mentioned above.

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