I just replace a coolant hose on 2002 mercury cougar 2.5 engine , and the vehicle boils over after running for about 5 minutes , is there a bleeder valve on this vehicle and where is it?
Try this. With the engine cool. Remove the radiator cap. *(wear gloves, eye protection, and keep away from where coolant can shoot out just in case.
Start your car. allow the engine to come to temp with the radiator cap off. looking into the open radiator you should see coolant start to flow in a few minutes. If you dont see a good deal of flow. You probably need a new thermostat *(ie, it's not opening, hence your fast overheat) At this time you can also see if you have a big air pocket in the radiator and if you need to add more coolant to properly top off the system.
If the coolant flows quickly and you still have an overheat you might be looking at a gunked up radiator. Which means try flushing the system or replacing the radiator.
There is a third option and that is a worn out impeller in the water pump. This repair is tough since the pump is on the motor down the passenger side of the engine bay. You might want to consider a timing belt replacement along with a pump change if your mileage indicates the belt is due for changing. This is unfortunately a very expensive repair. But better than getting a new engine right?
Check the easy stuff first, coolant level, condition of the belt, hoses and radiator cap and THEN go to the expensive stuff.
As always, wear protection, be safe, and good luck!
Problem can usually be traced to 1 of 3 things:
Stuck thermostat; with a thermostat stuck closed you would overheat and eventually get backflow into the reservoir
Bad waterpump; a bad bearing or a leaking water pump would cause your overheating problem
Bad head gasket; these are accompanied by white smoke from the exhaust and a foamy appearance on your auto transmission fluid dipstick
SOURCE: I need the firing order for a 1000 mercury cougar
the firing order 1,4,2,5,3,6.......the coil should be marked. the rear is 4,6,5 and the front is 3,2,1 looking at it from the front, counting from left to right.
SOURCE: my coolant expansion tank is overflowing after 20 minutes running
There could be a couple of reasons for this,
1. The thermostat could be stuck closed creating more pressure than normal. Your temp guage would show a higher temperature or you have another blockage in the system.
2. The expansion tank is too full.
3. The cylinder head may be leaking. If you fill the system run the engine to normal temperature with the radiator cap off, look for quite large bubbles coming out of the filler cap. If the head is badly leaking, they can be like a volcano. The temp will rise quickly from cold and the engine will overheat in a short distance.
It does seem odd that it would only spill over after 20 mins. Suspect that the expansion is over full first if your temp is normal. Let it run until it stops and see where the level is when the engine is cold.
SOURCE: Where is the DPFE Sensor located on my 2001 Mercury Cougar
The dpfe is located at the back of the intake manifold on a metal bracket it has an electrical connector coming from it and 2 rubber hoses that go down to the exaust manifold
SOURCE: Headlight lens removal on 2002 Mercury Cougar
Several car wax companys make kits to clean the outside of the headlight lenses. Check your local parts stores. It's usally pretty hard to remove the len, they are often glued on.
SOURCE: i have a 2001 mercury cougar with the 2.5L v6
Its time to do a injector balance and cylinder leakage test, to determine whether the injector or its circuitry is bad . The leakage test will tell you if the cylinder has a compression leak.
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