1984 Ford LTD 6 cyl Automatic 300000 miles
My car will not start when the temperature outside is below 60 degrees. The fuel pump does not engage at all. I have replaced numerous parts including both fuel pumps, fuel pump relays, fuel pressure regulator and temperature sensors that go into the computer. Because the " mechanics" tell me its this or that, but this morning it left me stranded. It had enough fuel in the line to start and get down the road before it died. This happened all winter last year and is already starting up this year. What can be the cause of this issue?
Hi kimbergainer, Welcome to 2carpros and TY for the donation
Here's your possibilities: Fuel pump could be on its way out-check it by doing a fuel pressure test if its within specs if okay test the fuel pump relay-For that weather start using Heet every fill-up and also examine the fuel filter
October, 14, 2010 AT 6:53 PM
I have already replaced those parts, including the fuel filter, fuel pumps, relays and fuel pressure regulator. I used HEET all winter last winter and NOTHING! The fuel pump is not engaging at all. It has throttle body so it is not a carb issue.
October, 14, 2010 AT 7:10 PM
Open up the fuel pump relay socket and check for power at the yellow wire, power here-the problem is coming from the computer control circuit of the fuel pump relay or the pink and black wire going to the fuel pumps. Also check the inertia switch
Also check the red wire on the injectors if it has power
October, 17, 2010 AT 10:11 AM
I cannot locate the inertia switch. Can you tell me where it is located?
October, 17, 2010 AT 12:13 PM
Fuel Pump Inertia SwitchIn trunk, attached to left wheel well
October, 17, 2010 AT 12:24 PM
This is a station wagon so there is no trunk. Where would it be?
October, 17, 2010 AT 1:00 PM
Did you do this? Open up the fuel pump relay socket and check for power at the yellow wire-Do you have power? It has an inertia switch-try checking the side panels the switch contains 2 red wires
Note: the inertia fuel cut off switch is designed to kill the injectors not the fuel pumps