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1995 Ford Mustang Questions

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Scan tools tell me there are no dtc's in computer, but when obd 2 monitor tests are run I keep getting catalyst incomplete after doing all of the ford specific drive cycle requirements, car is running really bad, I have some kinda vaccum leak because with the car at idle when I barely press the accelerator I hear a whistle sound as if someone was sucking in air to whistle, I just replaced all of the 4 oxygen sensors because the upstream o2 sensors failed min. low voltage tests, and there was a loud buzzing sound under car which I found was the o2 sensors, now the 2 upstream are buzzing again and the cat by drivers side is making a weird humming noise
Scan tools tell me there are no dtc's in computer, but when obd 2 monitor tests are run I keep getting catalyst incomplete after doing all of the ford specific drive cycle requirements, car is running really bad, I have some kinda vaccum leak because with the car at idle when I barely press the accelerator I hear a whistle sound as if someone was sucking in air to whistle, I just replaced all of the 4 oxygen sensors because the upstream o2 sensors failed min. low voltage tests, and there was a loud buzzing sound under car which I found was the o2 sensors, now the 2 upstream are buzzing again and the cat by drivers side is making a weird humming noise
The check engine light is on and at idle the tachometer fluctuates between 650-1100 RPM. I went to an AutoZone and they got an "error" reading when they went to check the codes...
temp guage goes up while car is still, at red light etc., and goes down to normal when moving. wiring hookup at the fan motor itself has a lot of play in it
My dipstick needs to be resealed into my engine. And my car shakes really bad when I'm idle and when I put little pressure on the gas. My car squeaks when I turn a lot but it'll will like do it for a while then it won't do it at all for a while. And I also have a flomaster i want put on my car
And if the oil pump was going out wld it cause the car to die due to inaccurate oil pressure ?
not enough pedal
it runs but need to change it do not think it has ever been looked at
fuel pump might be out, but want to check fuses and filters
does anyone know were the vacume line goe's from the evac system, but theres 2 hoes's that run off the evac pump an one that runs around the fron by the rad. I was wondering were that hoe's might possibly go?
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