Crown vic thermastat housing cracker,can i just replace housing or whole intake

Believe that is the thermostat housing , if so yes

You send it off to the promised land. You can buy a working crown Vic for the same price a repair will cost you.

its possible to drill out the broken part and use a extractor to remove the piece or drill out the hole and install a heli coil of the right size.

you can drive it but it will damage your catalyst system, that is why the klight flashes to let you know other problems can develop. the car being a 2002 it has a misfire monitor in the computer. go to a local parts house and have them scan for misfire codes to see which cylinder is misfiring. make sure you check the intake at the #5 cylinder (which is the first one on the left side of the engine)to see if it is getting coolant in it from the intake leaking at the thermostat housing.

You will have to replace the entire intake manifold. Check with salavage yard or try to locate a after market part from auto parts house.

The temperature gauge sending unit is located in the front section of the intake manifold, just to the right of the alternator on the 4.6L engines. Got this from autozones repair manuals

water in oil pan? try taking out the spark plugs and turning car over. Is there coolant/water coming out? If so you need Head gaskets or intake gaskets weren't done properly. If this problem wasn't there before gaskets were done I'ld strongly suggest looking at intake gaskets again.

Replace you Maf sensor and have a nice day. lol does the hesitation go away when you let off the gas. does it buck hesitate and misfire under load? most common problem is the maf sesnor.
easy to change. don't buy a used part it may develop the same problem after a little while. you can try cleaning the wire inside with brake cleaner (not intake cleaner). it may or may not help.

These are notorius for cracking the intake m anifolds, they are plactic, just had one in the shop a week ago, look around the thermastat housing for cracks, I hope this helps you

first of all if you have the new mirror off of a crown vic or grand marquise there is nothing to worry about wiring because you have to take the door panel off and once off all you have to do is plug in the new mirror the same way you took the old one off