What causes the upper radiator hose to collapse?
As the pressure in the system drops — when the engine is off and cooling down — the pressure cap allows the excess coolant in the overflow tank to return to the radiator. If the radiator cap is malfunctioning, the vacuum created in the system will collapse the hose.
How do you change oil pressure on a Saab 9-3?
The procedure to access the Saab oil pressure switch on a 9-3 is as follows: Remove the air cleaner cover. Disconnect the pipe of the mass air flow sensor. Remove the upper engine cover. Remove the upper turbocharger delivery pipe. Remove the bolts of the turbocharger delivery pipe. The car should now be raised.
Can a bad radiator hose cause engine damage?
In other cases a cooling system fault can cause the hose to collapse. In either case an inspection must be performed as a coolant hose that has collapsed cannot flow coolant properly. This can result in the vehicle overheating and engine damage. 5. Radiator hose is broken
Where does the radiator hose attach to the engine?
The upper hose attaches from the top of the radiator to the top of the engine at the thermostat housing. The lower hose attaches from the bottom of the radiator to the water pump of the engine. If you suspect either radiator hose is failing, watch for the following symptoms:
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What kind of coolant does a Saab 9-3 use?
The picture below is for a 2004 Saab 9-3 Arc and also shows the flow direction of the coolant in the system (in case you were curious): This job will require disconnecting components above and below the engine compartment such as air hoses, the radiator fan cowling and the intercooler and condenser attached to the radiator.
Where is the radiator located on a Saab?
For those that aren’t familiar with vehicle cooling systems the radiator is usually found in the front of the car behind the grill and front bumper, and in front of the radiator fan. The picture below is for a 2004 Saab 9-3 Arc and also shows the flow direction of the coolant in the system (in case you were curious):
Where do you remove the radiator cover on a car?
Remove the upper radiator support cover (the metal portion behind the headlights and over the top of the radiator). You can remove the radiator support cover WITHOUT removing the headlights, grill or bumper cover. Remove top bolts for the headlights and the bolts through the cover near the center.
How to remove a radiator from a subframe?
Disconnect the lower radiator connection (#24 in image). Unhook the intercooler and condenser from the radiator. Unhook the fan cowling from the radiator. Then remove the lower radiator mounting from the subframe (#28 in image): Carefully lower the radiator and remove from the vehicle. Reassembly!