gotfords Posted July 25, 2020 Share Posted July 25, 2020 The fuel pump cut off relay is to the right of the brake booster when looking from the front of the truck. There is a square-ish plastic cap screwed to the firewall that the relay snaps into from underneath. Note that this can hold two relays so it's a good location to add another (or move the trailer relay to) and keep it looking clean. The inertia switch is inside the cab on the passenger side of the hump. There is a square cutout in the firewall pad. Little square box with a white rectangular push button on it. thank you...i will check for them Link to comment Share on other sites More sharing options...
swampedout Posted July 25, 2020 Share Posted July 25, 2020 thank you...i will check for them I have similar cold starting issues as you mentioned earlier, Scott. Either it fires right up or I have to crank the starter for who knows how long. Especially in winter. Like if I miss that first shot, it takes a while after. Link to comment Share on other sites More sharing options...
kramttocs Posted July 25, 2020 Author Share Posted July 25, 2020 I have similar cold starting issues as you mentioned earlier, Scott. Either it fires right up or I have to crank the starter for who knows how long. Especially in winter. Like if I miss that first shot, it takes a while after. Since the rebuild, the starting cold problem has gone away but I still run into the same situation when hot - miss the first fire and have to crank a bit. In your 84 is it still mechanical or have you switched to electric pumps? Does yours turn fast when you have to crank it or is it sluggish? Link to comment Share on other sites More sharing options...
grumpin Posted July 25, 2020 Share Posted July 25, 2020 Since the rebuild, the starting cold problem has gone away but I still run into the same situation when hot - miss the first fire and have to crank a bit. In your 84 is it still mechanical or have you switched to electric pumps? Does yours turn fast when you have to crank it or is it sluggish? Different era and such, but my 92 Bronco had a cold start problem, ended up being the coil. It would crank way too much. Once started it started the rest of the day just fine. Link to comment Share on other sites More sharing options...
gotfords Posted July 26, 2020 Share Posted July 26, 2020 The fuel pump cut off relay is to the right of the brake booster when looking from the front of the truck. There is a square-ish plastic cap screwed to the firewall that the relay snaps into from underneath. Note that this can hold two relays so it's a good location to add another (or move the trailer relay to) and keep it looking clean. The inertia switch is inside the cab on the passenger side of the hump. There is a square cutout in the firewall pad. Little square box with a white rectangular push button on it. ok..mine has two relays...the second one is paint green...what is it? Link to comment Share on other sites More sharing options...
kramttocs Posted July 26, 2020 Author Share Posted July 26, 2020 ok..mine has two relays...the second one is paint green...what is it? Can you add a photo? Some of the relays are green housed. I believe both my trailer and fuel pump relay are. If you can get a photo that shows the wire colors going to the different relays that would let us identify what they are for. Link to comment Share on other sites More sharing options...
ArdWrknTrk Posted July 26, 2020 Share Posted July 26, 2020 Can you add a photo? Some of the relays are green housed. I believe both my trailer and fuel pump relay are. If you can get a photo that shows the wire colors going to the different relays that would let us identify what they are for. Yep, there are fuel pump relays, tank switching relays and trailer relays. I'm not sure about an '84 I-6 but I do know the hot fuel handling system used in 460's and some 351HO's Link to comment Share on other sites More sharing options...
gotfords Posted July 26, 2020 Share Posted July 26, 2020 ok..mine has two relays...the second one is paint green...what is it? ok...sending pics...my 84 f250 is a 460 with hot fueling...it is a Cali truck originally now in AZ and i understand one of these is the fuel pump relay....where is the fuel tank selector relay? thanks Link to comment Share on other sites More sharing options...
ArdWrknTrk Posted July 26, 2020 Share Posted July 26, 2020 ok...sending pics...my 84 f250 is a 460 with hot fueling...it is a Cali truck originally now in AZ and i understand one of these is the fuel pump relay....where is the fuel tank selector relay? thanks Sorry, I look at your Sig and it says inline 6 to me. Link to comment Share on other sites More sharing options...
gotfords Posted July 26, 2020 Share Posted July 26, 2020 Sorry, I look at your Sig and it says inline 6 to me. yes it does for my 86 f150...i just got this 84 f250 2 weeks ago Link to comment Share on other sites More sharing options...
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