Dandy74

so my car wont take any throttle just happened its like it starts to pick up then just like drops all cylinders it idles perfect swaped the tfi no luck there but i did notice that if i leave the #1 injector unplugged it misses but will load up in drive also unplugged the spout that didnt help either fuel pressure is 32 at idle and 40 when the throttle is cracked what controls injector operation? sound like a pick up? thanks in advance for any help

mjr46

have you cleaned the maf and checked the fuel filter for restriction??

Dandy74

the maf is cool does it with the maf unplugged also it really feels like its running out of fuel but i know the pressure and volume is good i even popped the line off at the rail and tons of volume

mjr46

^^^that's not an accurate way to verify it's doing what it is suppose to....you really need to drive the car with a gauge hooked up to the fuel rail and tape it to the windshield and monitor the pressure under various driving conditions like at cruise and WOT..and see if there is a change or drop in pressure..due to a restriction or a weak pump

95stang50

i kno this sounds stupid but dude check for vac leaks....take a bottle of chemtool and spray all over...every where you have vac lines around you manifold egr everything....my car kinda had the same problem and my egr diaphram had a hole in it which was causing a bad vac leak...good luck

Dandy74

well i replaced the pick up,module coil,cap and rotor fuel pressure is a strong 32-36psi at wot
i start it cold and its fin i hit maybe 1/2 mile and anything above 3k it feels like it dropping 4 cylinders once warm on time u acell and it will rev up next time nothing maf disconnected,ect and tps disconnected same thing after it starts missing in the upper end i make it home and any throttle at all it just misses like the pcm is shuttting injectors off will idle perfect and when you step on it nothing there liek no fuel pressure but i know its good even used an alt fuel supply at 40psi same thing i thought for sure it was the pip circuit but after the pick up was replaced same thing only direction i have at this point is the pcm anyone have any ideas? oh and the evp and egr were also disconnected no help
Thanks anyone have a 94 5.0 auto pcm for cheap??????

Dandy74

anyone else have any input>?