On dual tanks when replacing fuel pump, how do you know which one is bad
Asked by nicenanc Feb 21, 2021 at 06:09 PM about the 1992 Ford F-150 XL Extended Cab LB
Question type: Maintenance & Repair
ck engine light came on then wont start completely. I have dual tanks, I had let
rear tank run completely out then switched to front tank, which usually kicks in.
Do you think that one got burnt out
3 Answers
Most likely. The fuel running through the fuel pump motor cools and lubricates the pump motor. When the gas tank runs dry the fuel pump motor can burn out very quickly. Hope that helps! Jim
Guru9WYK2D answered 3 years ago
I had 87 silverado dual tanks and truck quit running. Told both tanks burnt out. I told mechanic what was the odds, then he found out it had some sort of valve under cab of truck that switches from left tank to right tank. I think fords are on same side at least filling doors but check that out 1st.Still had to pay almost 300 to have them put pumps and tanks back in because neither where burnt. Also check button on dash where my electronic electronic valve routed from. Good Luck
