Where you located...does a f150 1991 have an under the hood fyse box?

Sir, you are an excellent instructor! Amazing video.

Thank you-valuable information and simply explained for me to understand.

Good information, thnks

04:09 ECM Diode, Simply Remove & Replace for better connection. THANKS FIXED MY 543 Ford OBD code. Power restored.

I've been searching trying to figure out why it will start but then the fuel pump doesn't Pump Fuel again I never thought to check that dialed I didn't know anything about that had anything to do with this song I really appreciate you don't

Great explanation of a problem. Thank you for sharing.

I got no power to my switch, so what’s the problem?

thanks

Very good job thanks

U know ur chit! Thanks a mill.

How can u tell if the nurse fuel is trip

Ok I have a 1986 and I don't have no power going to my fuel pump

Thank you!! For the Video!!🙌🏼🙌🏼👍🏼👍🏼💯🇺🇸🙏🏼

Thanks for a great troublshooting video! Loved it.😊

This is a great video thanks

Mmmmm❤

Dude thank you.

Where are you located? I have the same problem.

Thanks for very informative video. I have a 94 F 150 that will only feed from the rear tank. I pulled the bed and replaced the front fuel tank pump and presto. All works. Next day no run on front tank. After watching your video I checked the inertia switch, swapped relays around, Checked diode with meter. Found only 6 volts at the front/rear selector switch. What feeds 12 volts to thisswitch? Where can I get a schematic? I went to the library, searched the web. No joy yet. Like to know what the next item is upstream of the switch.

THANK YOU MY 1987 ACTS QUIRKY THIS WAY

Got any ideas why a 2003 mercury mountaineer no fuel pump prime when you turn key on. Car will start after cracking to get oil pressure car starts and runs fine. Just harder to start when it hot. .

Very Good. Hope you can help me. I have the same truck. sat 3 years. I replaced front tank, treated fuel cleaned throttle body all good then was going to replace the rear tank and just prior to mounting the tank I thought I would check the voltage on the rear harness. I got like 5. something volts. Went to start on front tank pump would not run. checked voltage on new selector switch. NO voltage, checked relay, inertia switch all good. An idea? Thought I would just connect the new rear pump not installing it in the tank and see if it would run. I am out of ideas

Could you please tell me why I have a light throttle.

Great video!

Thank you for clear explanations.

Is it normal for fuel selector switch wires to get hot and on the diode when checking it how did you check it to make sure it's good.

F250 7.3 related switch

What would you think. Fuel pump works can jump and make them run good fuel shut off switch. Good diode but no power from the cab harness to to fuse box? Can run a jumper wire with fuse inside the cab to fuel pump make them run all the time but won’t prime off the key

Iv replaced 3 fuel pumps in 6 months if I keep flipping tank selector switch it runs fine but in a few minutes fuel problems again

Thank you. I am working on the same problem and this was vary helpful

87 F150 doesn't have that power distribution box there. Is the 87-95 speed density version a lot different?

Thank you so much for this detailed video and you have a very sexy voice which made it all the better. Thanks

This helped me tremendously

Great video with detailed, yet common sense explanation and demonstration for what can be a confusing and difficult situation to diagnose and repair, especially for those of us who are non-mechanics. Many thanks, as this significantly aided my troubleshooting on my 93 F150.

Excellent job Sir. Good advice about the side relief.

Good job bro👏🏼👏🏼👏🏼👏🏼👏🏼👍👍👍👍

Man thanks so much! All I did was push in the ecm diode and truck started right up! 1992 Ford F-150 xlt, hope this helps someone else!!

Will that dio or whatever you called it in the fuse block there cause the fuel pumps to keep priming went you turn the key on? Cause I'm almost out of sensors to replace on my 97 f250.

It always makes me happy to spend a couple hundred bucks too.

awesome video my friend simply explains straight to the point just awesome.

It was that damn red button

Great video very informative make more videos like this pls

Wow thanks for this video

Where do I start... I bought a semi busted 1994 f 150 from a homeless man for $1k. 3 hours into the trip home it stopped running. I suspected it to be the fuel pump as the gauge level wasn’t working and fuel over flowed from the tank. Long story short, after sitting for months, replacing the starter battery and fuel pump, it still didn’t run. The hose that’s supposed to recycle vapor was detached, causing gasoline to overflow from the tank. The old fuel pump only had two wires running from it (positive and ground) The other two wires from the pump were cut off, which explained the reason I couldn’t read the fuel level. The positive was ran directly to a random positive harness. I had to undo all the bull shaz and connect a new pump properly to the wiring harness. Still, no power. Now I’m thinking maybe the previous owner wired it like he did as an inexpensive alternative to making a fuel pump relay directly to the battery due to not getting enough voltage to the pump. So my next step is to chec

Where do I start... I bought a semi busted 1994 f 150 from a homeless man for $1k. 3 hours into the trip home it stopped running. I suspected it to be the fuel pump as the gauge level wasn’t working and fuel over flowed from the tank. Long story short, after sitting for months, replacing the starter battery and fuel pump, it still didn’t run. The hose that’s supposed to recycle vapor was detached, causing gasoline to overflow from the tank. The old fuel pump only had two wires running from it (positive and ground) The other two wires from the pump were cut off, which explained the reason I couldn’t read the fuel level. The positive was ran directly to a random positive harness. I had to undo all the bull shaz and connect a new pump properly to the wiring harness. Still, no power. Now I’m thinking maybe the previous owner wired it like he did as an inexpensive alternative to making a fuel pump relay directly to the battery due to not getting enough voltage to the pump. So my next step is to check the inertia switch, tank selector, ECM diode, relay, fuel pressure and pump. If I that doesn’t solve the problem, direct battery connection is a must.

Hello l have two fuel tank s.lf one fuel pump goes out can the second tank be used?

Finally a no nonsense salt of the earth guy. No B.S. just great guy.

@Tri-RRR Services, did you have any obd1 codes pulled? I am at your video with a no-start on my 97 f350 auto and pulled a 542 fuel pump open circuit or ecm code. They just replaced the fuel selector switch and don’t believe the inertia safety is tripped or bad (those things are resilient in my experience), but that ecm relay I had no idea. I have a feeling my 92 f150 is in limp because of that and this new-to-me f350 is possibly suffering from a bad connection there too. However, wanted to check on any obd1 codes you had pulled.

Clear. You go direct to the problems. Not bla bla bla like others thanks a lot