20 Most Recent 1992 Pontiac Grand Am - Page 5 Questions & Answers

Sounds like you still have air in the system..Does the vehicle have any bleeder screws on the thermostat housing or around the waterpump area..If it does open them up until you get a good stream coming out

Put at least 5 gallons of gas in the tank. Most tank baffles won't let 1 or 2 gallons get to the pump.
Before you do that, go back and make sure everything is hooked up, and no rotten rubber lines at tank and evap connections. If you didn't already, change the fuel filter.

CLOGGED FUEL FILER STOPPED UP AIR FILTER AND CLOGGED FUEL INJECTORS, OR WEAK FUEL PUMP.CHECK FOR INTAKE LEAKS.DIRTY THROTTLE PLATE OR THROTTLE BORE.CLEAN FUEL INJECTORS ADD CAN SEAFOAM TO 3/4 TO FULL TANK OF GAS.CHANGE FUEL FILTER AND AIR FILTER SEE WHAT HAPPENS.

sounds like ur torque convertor is locked up unplug the harness on the transmission ull be fine the selector is an issue that has to be tore apart 2 see whats going on

The battery number is going to be a 75-d or dl and minimum of about 650 cca.

It might be the coil pack

follow your upper radiator hose back to the housing there will be 2 or 3 bolt the thermostat rest between the water outlet housing and head very simple to find


if it helps please give thumbs up

check ur catalytic converter? it may be causing back pressure

You have to buy the replacement line for it. The fuel line is pressure rated. You can try cutting a small piece out and replace it with a hose but you would have to flare the end of each piece with a tube flaring tool. Not a gaurrenteed fix but replacing the whole line is.

You can't without breaking lock cylinder and ignition switch.

the coil pack has the cyl number listed next to each post. 1-3-5 are front 2-4-6 are rear from left to right.

Should also be on plate on inside drivers door and on another plate on firewall.

there is nothing the same on the two the 1992 has computer command control system and 1994 has the OBD II system so none of the 1992 sensors or injectors will work with the 1994 on board computer system......SORRY

While turning key forward try turning steering wheel back & forth. If you are parked on an incline or wheels are turned, it will make it hard to turn key.

The flasher is built into the switch. If your switch is clicking all the time, it's not the hazard switch. It's the turn signal switch. Replaced alot of them, poor design.

High NOX is an indication that your Catalytic Converter needs to be replaced.The hydrocarbons or unburnt fuel are dealt with in the Cat as well.If you do a lot of short in town trips they tend to clog up faster but at eight years old its not uncommon.What I would do is have a "tune up" done or do it yourself,replace the air filter,do an oil change,and replace the cat. Fill up with a higher octane gas and go for a good run( get the engine good and hot) to clear it out and just before your next test take out the air filter in the parking lot and put it back in after the test.The above has worked for me several times. Good luck