I have an 02 GT, sat for about 6 years before I bought it. Put a fuel pump in it, filter, cleaned injectors with a pulse machine new screens and o-rings. I've only driven it a handful of times at this point. Recently it developed an ignition cut above 3500 under load. Scan tool says it has 7 psi under this condition. Even at idle pressure would drop significantly. Not quite to 7 though, around 14-18 psi at idle.

On mechanical garage jumps to when 40 when you rev it, drops to 20 then back to 30. No drop when revving just when you let off the gas. To be expected I imagine, maybe not 20 though? Check video out

vacume line on sensor attached, idles at 30, detached idles at 40. Just like book says to test pump and sensor.

Im gonna try and drive it tomorrow with mechanical gauge hooked up. Got too late tonight to drive, she's loud as ****. I'll update post tomorrow after test drive.

mainly if anyone has had this problem what was fix? Or any insight on problem would be helpful.

thanks boys see you in comments

 

For anybody having this stuttering issue under load and your fuel pressure is good, should be a faulty fuel pressure sensor!
I'll be getting the sensor this weekend and update and see if it fixes problem!