96 t-bird 4.6 problems after manifold change
just got done replacing the intake manifold on my 4.6. car ran ok before except for a small coolant leak under the aluminum coolant manifold. replaced with an aftermarket manifold. I replaced the plugs with the recommended autolite platinums to replace the original motorcraft platinums. also replace the air cleaner and fuel filter.
now the car hesistates (like a bad accelarator pump on a carb'd car) when you first hit the throttle. after warming up it lugs/jerks at around 30 mph or so, and occassionally idles rough. check engine light came on after about 5 miles.
i have checked all the electrical connections, fuel enjectors, plug wires and vacuum connections/hoses, wires/sensor connections. everything appears to be right. i got a p1443 code and checked the EVAP sensor and system. I didn't touch them durin the manifold change, but now have the driveability problems with occassional miss and lugging around 30 mph. else has had this problem or found the fix? searched the forum on the code, but everything checks out.