My zuma will run but when I stop it wont idle it shuts itself off also sometimes when I have the accelator all the way down it takes a bit before it accelerates why is it not workn properly?

Have you ever changed the spark plugs? If not start there if that doesn't take care of it remove and clean the MAF sensor located in the air filter housing. I hope this helps. Take care.

sounds like a bad coil

No read the fix below.

Engine stalling issue at low speeds

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control

TRY THIS;WHILE RUNNING SPRAY WD40 ALL OVER ENGINE..MOVE SLOWLY WHILE SPRAYING..NOW IF ENGINE REVS UP MAJIOR VACUMM LEAK....FIX AND BE HAPPY..GOOD LUCK..INDIAN HEAD SHALAC IS THE BEST SEALANT FOR ALL GASKETS AND VERY CHEAP COMPARED TO OTHERS THAT FAIL AFTER GETTING HOT A COUPLE OF TIMES..BUT I WOULD SAY YOU HAVE SOME KIND OF LEAK..THE ENGINE WILL BE SUCKING ALOT OF AIR THRU THIS AREA.PLUS IF IT LOOKS WET AROUND GASKET OR OIL LEAKS FAILING GASKETS..POTENTAIL VACUMM AREA..HOW DID IT RUN AFTER REBUILT..COULD BE SHOTTY WORK..JUST EXPLORING ALL AVENUES..COULD NEED HEAD RETORQUE IF THEY DIDNT USE LOCK TITE..BLUE NEVER THE RED..RED IS PERMANTE NEVER COMMING APART..HOPE THIS HELPS..BUT IF THE WORK YOU HAD DONE IS STILL UNDER WARRANTY THAN GIVE IT BACK TO GET FIXED..

DON'T KNOW THAT THE CAUSE IS BUT 900 RPM IS WAY TOO HIGH FOR A NORMAL IDLE SPEED.
WHILE IT IDLING HOSE THE ENGINE WITH A MIST OF WATER AND LISTEN FOR A CHANGE IN IDLE SPEED OR AN ELECTRICAL SHORTING SOUND.
SHORTING SOUND = PLUG WIRES
SPEED CHANGE = A VACUME LEAK.

sounds life lack of fuel pressure. First ( and cheapest ) thing to do would be a new fuel filter.

CHECK THE IDLE SPEED SENSOR, UNPLUG IT AND SEE IF THE VEHICLE REVS UP A BIT. IF IT DOES, THEN REPLACE IT. ALSO CHECK THE FUEL PUMP RELAY IN THE FUSEBOX. HOPE THIS HELPS. .LET ME KNOW. GOOD LUCK

Dead sparkplug or plug wire. Vacuum line disconnected , loose or broken,or timing / timing belt.

it all depends on what yr the ford is b/c my grandmas car dose it a lot when you go to shut the car off make sure it is in park and it is in a idle then when you start it it should be fine if not go under the hood and see if it accelator can be lossened a littel bit if so it will save you on gas and the idle wont be as high. if that dose not work then dont worrie about it it wont harm the car any and dont pump the gas pedall while the car is not running