follow the upper radiator hose from the radiator to the motor. it will be inside the housing the hose attaches to. ps...not easy to replace
If you have replaced the thermostat already, and the radiator is flowing properly, I hate to tell you, but the quad 4 has a nasty reputation of cracking heads around the exhaust seats. Be very careful in getting this repaired; make sure the shop that does it has had experience with this motor.
I know at least Skylark had the Quad-4 engine as an option in the 90's models.
It is located on the passager side, there is a metal pipe that runs under the engine on that side and them turns and goes straight up, the thermostat is located on top of the pipe under the exaust manifold. You can see part of it from the top of the engine if you look straight down. I need to change mine but have not figured a good way to get to it yet. Looking thru from the tire well you can get a better look at it.
Quad driver module? Or your PCM is out.
Quad Four is 1 3 4 2 V6 is 1 6 5 4 3 2
the ignition coil is located under the top cover that says 2.4 quad
bottom of engine below ex manifold.
These engines take care of themselves... They have a air bleed tube coming out of the water outlet, which is located under the power steering pump on the drivers side. This tube runs back over to the fill tank. This system does not have a cap on the radiator, just on the fill tank. This is correct on the 97 Buick Skylark 2.4 Quad 4 which I have.
I believe there is a slightly finned top on this motor (quad 4). remove the bolts on this and it should remove the finned plate, giving access to the spark plugs underneath.
under the exhaust manifold. follow the bottom radiator hose (the one that drops below the oil pan).. the metal piece that the hose connects to holds the thermostat (thermostat's at the other end)
On the 2.3 Quad 4 Skylark engine the power steering pump is at the front of the engine block behind the radiator, Usualy where you would see the oil dipstick. The cap should say power steering fluid. Check the dipstick that is on the cap, and fill until the dipstick reads full.
Quad-Drive module or QUAD-DRIVE No.1 error