1999 Pontiac Grand Am GT 3.4 Liter V-6

PO128 -- engine coolant low or thermostat not working
P0440 - EVAP system malfunction, gas cap loose - Cat convertors missing from car can cause this
P1189 - Engine Oil Pressure Switch Circuit -- CAT CONVERTORS MISSING FROM CAR can cause this.

White smoke in the exhaust is a sign of water in the engine. What is the level of the radiator? You may need a new head gasket or heads.

1999 Pontiac Grand AM 2.4 liter DOHC L4 VIN "T"





1999 Pontiac Grand AM 3.4 liter V-6 VIN "E"





Hope helps.

sounds like a bad fuel pressure regulator,this located on the fuel rail that the injectors are on it has a vacum hose going to it,a small one,if you remove this vacum hose and there is fuel on the hose side this is bad even just a small amount,there should be no liquid on the vacum hose side,becarefull when replacing,you must relieve all fuel pressure 1st

Hello jon...here is your firing order...Number 1 cylinder being on the left bank as you face the engine
1994 Pontiac Grand AM
3.1 liter V-6 VIN "M"
Good luck...i hope this helps, please rate me a fixya.

sounds like you a major vacumm leak which would cause this problem. you can take a can of brake cleaner and spray differant places over itake area and if the idle picks up and smooths out you should be able to find the leak.

Do you have a check engine light on? What codes?

IS IT IN THE ENGINE OR INSIDE

I would check the exhaust pipe a little closewr. White smoke can also mean a blown head gasket. Check the tail pipe to see if moisture is present. Also check coolant level. A blown head gasket can also cause related problems.

Bill

the coil pack it's self should be numbered Starting left to right across the front it is 2, 4, 6 and across the back left to right it is 1, 3, 5. Emissonwiz (only the OHV, pushrod V6 was avaliable in 99 unless you had the 4 cylinder)