89 GT problem

[ID89GT]

OK so I just recently got an 89 Mustang GT, and am working on fixing it all up, and have run into a problem. Whenever I accelerate quickly, the car will lose power and will backfire quite a bit and will just not doing anything. If I accelerate gradually it won't do it, but that defeats the purpose of the car and ain't no fun lol. I have been told it is the fuel pump, but don't want to go out and spend 150 bucks or so right now for the one I want and it still has the problem. Any help will be appreciated

 

[MarcMonteverde]

check timming

 

[HISSIN50]

First thing to do is pull codes. If it's the pump, you should see a lean code stored. Or have an assistant watch fuel pressure while accelerating.

Good luck.

 

[93 LX]

fuel filter??

 

[Mustang5L5]

Most likely a tune-up issue.

Run the codes. Give a quick visual to the cap, rotor, and wires and change them if they look burned.

Replace the fuel filter

 

[ID89GT]

I replaced the fuel filter, and it ran great for about 2 blocks. Then it went crap on me and now its only gettin worst. Now I can't even accelerate at all without it going crap on me. It is starting to have problems just gettin the car to start even now Also when it does start, you can hear the fuel pump really good whirring in the back when inside the car, and with the exhaust system on it, its pretty loud to overcome that

 

[93 LX]

check fuel pressure

 

[HISSIN50]

Also when it does start, you can hear the fuel pump really good whirring in the back when inside the car, and with the exhaust system on it, its pretty loud to overcome that

Noise is as good of a barometer for fuel pump performance as it is for stinkyness of a fart. Don't go by sound alone and assume nothing.

Good luck.

 

[87coupe50]

well, I was gonna say change the fuel filter cause I just had a similar issue. Maybe you just have a ton of crap in the tank and need to flush or replace the tank.

 

[ID89GT]

Well now it doesn't start at all. It just turns the engine but it never actually starts

 

[HISSIN50]

Good. That makes it easier. Check for spark. Check injector pulsing. Check fuel pressure. Go from there.