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how to remove the door panel on a 1992 mercury cougar
On a 1992 Mercury Cougar ( which is OBD I , EEC IV ) There should be an EEC TEST connection in the engine compartment
R-12
According to one of Fords websites : For the 1992 Mercury Cougar , 3.8 liter V6 engine : ( the spark plugs are gapped at .054 inch )
According to my Chilton's Auto Repair Manual : A ( 1991 ) Mercury Cougar has a ( 19.0 US. gallon gas tank )
5 qts
According to a website I was looking at : For the 1992 Mercury Cougar , 3.8 litre V6 , 4 speed automatic transmission : ( 18 city / 25 highway , miles per U.S. gallon )
If you replace any brake component that breaks the brake fluid seal or you let it get very low of brake fluid, yes, you must bleed the brakes.
It came from the factory with ( 5W-30 )
Spark plug order? there is no such thing.
You need to bleed the entire brake system. Bleed in this sequence, RR, LR, RF, LF. If you do not know how to do this, do a search online for "bleeding brakes" THE REAR WHEEL CYLINDERS MAY BE LEAKING SHOULD ALWAYS CHANGE WHEN DOING BRAKES AND BLEED REAR BRAKES
If you are having a low pedal feel, chances are you do not to bleed you brakes. I beleave you have shoe and drum set up in the rear. Have your brakes cleaned & adjusted. This will firm up your brake pedal.