2000 Mustang GT won't full throttle

Modularcrazy said:

I have a 2000 Mustang GT, runs great until aggressive with full throttle and falls straight on it's face and bogs down. If your very easy with throttle it is better but once above 3000rpm or around there. Anyone have ideas?? Throttle position sensor new.

Click to expand...

You possibly have a fuel delivery problem. Replace the fuel filter and if that doesn't help, do a fuel pressure test.

Thanks, I was leaning towards that but filter and fuel pump are new. May have some some stuff breaking down in gas tank. Injecters are new as well. Did sit for a few years

Remove all of the EFI **** and put a god damn carburetor on it and msd ignition. The beauty of keeping it simple will show up every time you want to do a mod or adjust anything and it doesn't cost you hundreds to re tune it and then another few hundred for bigger injectors and all of that. Throw a supercharger on in your garage and do a WOT pull right out of your driveway! imagine that

Modularcrazy said:

Thanks, I was leaning towards that but filter and fuel pump are new. May have some some stuff breaking down in gas tank. Injecters are new as well. Did sit for a few years

Click to expand...

Ok.
Another thing to check is the charging system. It can be charging enough to keep the battery charged to start the engine but not enough to run the computer. It can cause all sorts of driveability problems.
Also, scan for any codes. There may be some even if the Check Engine Light is not lit up.

Panther140 said:

Remove all of the EFI **** and put a god damn carburetor on it and msd ignition. The beauty of keeping it simple will show up every time you want to do a mod or adjust anything and it doesn't cost you hundreds to re tune it and then another few hundred for bigger injectors and all of that. Throw a supercharger on in your garage and do a WOT pull right out of your driveway! imagine that

Click to expand...

Good luck trying to get it to pass emissions testing.

I think your right on fuel delivery, I have checked it with my actron cp9185 scanner and there are no codes or misfires.

Idk where they do that at but it certainly isn't where I live. Damn gestapo Nazis regulating the **** out of everything. We seriously need another good ol fashioned revolution.

Check your fuel pressure, report back.

If fuel press is ok try cleaning the maf its possible that its so dirty that it cant read right to report correct load


Sent from my iPhone using Mustang Evolution

Panther140 said:

Idk where they do that at but it certainly isn't where I live. Damn gestapo Nazis regulating the **** out of everything. We seriously need another good ol fashioned revolution.

Click to expand...

Lol good luck.. Our police are armed like the military and will flash bang your ass. We live in an interesting time for sure.


Yes I edit my posts a lot, auto correct likes to sabotage me!

V6 stang said:

Lol good luck.. Our police are armed like the military and will flash bang your ass. We live in an interesting time for sure.


Yes I edit my posts a lot, auto correct likes to sabotage me!

Click to expand...

Hence the "Gestapo" reference. Our police are not here to protect us anymore. Its dangerous that nobody is realizing that.


News flash for everybody: The government does not have empathy. The thing that is most precious to any government is its power over the people that it rules. That is the number 1 concern.

Also im not for a carb setup, anytime weather changes u have to change jetting if u have a boosted carb setup, and these 2vs just dont make enough hp n.a for me to be content


Sent from my iPhone using Mustang Evolution

Ehh, if the weather changes like 60 degrees, then you have to. And its really easy to re jet a carb idk why everybody thinks messing around with EFI is easier. It is easier to re jet the carb once or twice a year than it is to jump through the 50000000000 hoops that you have to do to make an EFI system feed a forced induction engine.


Plus, carbureted throttle response > Anything else. Don't even get me started on Drive by wire

Replaced fuel filter last night and that took care of the problem. I overlooked that since it was just changed a few months ago. Thanks

Changed fuel filter last night and that fixed it, no problem with throttle now. Thanks

did you (safely) cut it open and look at all the gunk? what color was the fuel that fell out of it? was it a nice dark brown roast, or more of a rusty orange?

Dark Roast, I'm sure the gas was tarnished some from sitting for so long before i bought it but this is the second fuel filter and 3rd tank of gas with new fuel pump.

Modularcrazy said:

I have a 2000 Mustang GT, runs great until aggressive with full throttle and falls straight on it's face and bogs down. If your very easy with throttle it is better but once above 3000rpm or around there. Anyone have ideas?? Throttle position sensor new.

Click to expand...

Did you figure it out becaus I put new throttle body bigger injectors new fuel pump and a tube and mine does the same thing