AboutTony Florence Expertise Automotive and some diesel pertaining to ford,mercury and lincoln vehicles
Experience Dealer level employee for 17 years, from tech to current service advisor, previous tech at goodyear auto center,independent shops auto and large truck including my own
Organizations member of indiana street rod assoc, lions club
Education/Credentials lincoln tech grad with auto/diesel technology, business management
Awards and Honors ford master certified service advisor,service manager, warr admin., commercial business
Question My Question is simular to this guys problem.. thats why i copied and pasted below.
The fuel pump keeps running even if i switch tanks when engine is shut off, also we have duel fuel gas/propane, with 2 different switches one switch is front/rear , second switch is gas/off/propane. I pulled the codes and it tells me that my problem is the primary and secondary relays/circiuts.. i've looked in my manual "Haynes" 1980-1996 . And i cannot find the picture of where the relays are or even what they look like. can you help ? hopefully this is the problem what do you think ?
Ford Repair - sensor
--------------------------------------------------------------------------------
Expert: mark henson - 3/1/2009
Question
QUESTION: which sensor would cause the fuel pumpe to come on when not needed. or cause a flooding problem ,i think i have a loose wire.to one of them. thanks a lot ,glad people like you are willing to do this. i would if i knew any thing. i am going to get the codes pulled soon. but give me your best guess.
ANSWER: larry what is your year/make/model and engine size-no sensor turns on your fuel pump it is controlled by fuel pump relay-inertia switch and pcm relay-give me a little more info and exactly what is happening and i will try to help.
---------- FOLLOW-UP ----------
QUESTION: i`m sorrry,it is a 92 ford f 150 300 6 cy duel tank, when check engine light comes on ,it will hardly run. if you stop and turn the switch back on you can hear the pump running,both tanks do the same.if ligh goes out it runs great.light flashes like a loose wire on a sensor.i guess i`ll try to pull the codes today,thanks in advance
Answer Hello Vince, Start by checking the fuel pump relay, it shound be located under the hood on the left side engine compartment power dist. box. If it is stuck you should feel it and hear it making a noise. The relay should be black in color, but there are a couple other relays black in color also. That is where I would start checking 1st. Hope this helps Thanks Tony
