I enjoy this project series do much, I've got Vanilla Ice playing in the background, wearing my Z. Cavariccis, Varnet sunglasses, and ordered a Oakley Thermonuclear Protection neon green Windshield banner sticker for one of my cars! Can't wait for the next video. I'm sure it will be...To the Extreme! Get it?!!
I could not for the life of me disconnect the fuel pump relay under my driver seat. It looks just like yours. To slide it out, Did you push down on the green tab or pull it up? I was worried that if i took out the seat then I would to strip the bolt holding the front together (watched a LMR video stating to be careful)….but looks like I might have too to have a better look and access at the relay.
Man it’s been a while since I’ve done this…I wanna say I used a screwdriver and carefully pried it open. Push that seat all the way forward, get a light on it, and be prepared to be at an awkward angle. Good luck.
So my 91 has a running pump but will not build pressure until it's running. KOEOi get zero fuel pressure. I can hear the pump running and the engine does run. But once it's running the pressure will be around 35psi with the regulator hooked up and 40 unhooked. But when I shut the car off the pressure drops to zero immediately. Any help would be appreciated.
Sometimes in can be an issue with the regulator or the pump itself. For the pump, it could either be a leak on one of the hoses or maybe the check valve could have an issue. How old’s the pump?
@autoobsessivegarage I'm assuming original. I have a 255 pump to put in anyway. I just changed all 8 injectors and put in a known working regulator after I asked this and it's still doing it. So I'm gonna drop the tank
The base fuel pressure KOEO is exactly 39psi for a 5.0 Mustang...Any higher and it will mess with your fuel tables and it appears that youre not using the stock MAF either which will mess with your MAF voltage to AirFlow calibration... Do you have the EGR deleted aswell?.If so and you didnt do the delete mod your timing will not adjust...
Spot on. It’s my buddy’s Mustang, and it’s got some mods for sure…it also had a bunch of parts just thrown at it by the last mechanic to get in there. He ended up getting a basic tune to account for these mods after I set everything up to a solid baseline and the car runs great now.
I enjoy this project series do much, I've got Vanilla Ice playing in the background, wearing my Z. Cavariccis, Varnet sunglasses, and ordered a Oakley Thermonuclear Protection neon green Windshield banner sticker for one of my cars!
Can't wait for the next video. I'm sure it will be...To the Extreme! Get it?!!
Haha I do everything “To the Extreme” my friend. Still have that cassette tape kicking around somewhere.
@@autoobsessivegarage Word?!! Word to yah mutha!
I could not for the life of me disconnect the fuel pump relay under my driver seat. It looks just like yours. To slide it out, Did you push down on the green tab or pull it up?
I was worried that if i took out the seat then I would to strip the bolt holding the front together (watched a LMR video stating to be careful)….but looks like I might have too to have a better look and access at the relay.
Man it’s been a while since I’ve done this…I wanna say I used a screwdriver and carefully pried it open. Push that seat all the way forward, get a light on it, and be prepared to be at an awkward angle. Good luck.
So my 91 has a running pump but will not build pressure until it's running. KOEOi get zero fuel pressure. I can hear the pump running and the engine does run. But once it's running the pressure will be around 35psi with the regulator hooked up and 40 unhooked. But when I shut the car off the pressure drops to zero immediately. Any help would be appreciated.
Sometimes in can be an issue with the regulator or the pump itself. For the pump, it could either be a leak on one of the hoses or maybe the check valve could have an issue.
How old’s the pump?
@autoobsessivegarage I'm assuming original. I have a 255 pump to put in anyway. I just changed all 8 injectors and put in a known working regulator after I asked this and it's still doing it. So I'm gonna drop the tank
The fuel pump was not original. The pump is a walbro. Not a 255 pump. But I found a small weeping leak on the tank.
That’s definitely your fuel pump on it’s was out
The base fuel pressure KOEO is exactly 39psi for a 5.0 Mustang...Any higher and it will mess with your fuel tables and it appears that youre not using the stock MAF either which will mess with your MAF voltage to AirFlow calibration...
Do you have the EGR deleted aswell?.If so and you didnt do the delete mod your timing will not adjust...
Spot on. It’s my buddy’s Mustang, and it’s got some mods for sure…it also had a bunch of parts just thrown at it by the last mechanic to get in there. He ended up getting a basic tune to account for these mods after I set everything up to a solid baseline and the car runs great now.
Never knew the fuel pump relay is under the seat.
Pretty wild right?
Not in 93’s. Under the hood.