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Look for the accumilator/dryer. (it is a silver looking can)Itis on the low side of the AC system.
drop the fuel tank, it is on top. But before you do that, make sure your fuel pressure regulator is not the problem, probably is.
Wrong , 1979 cadillac eldorado has 2 Electric Fuel Pumps and is Fuel injected, One low pressure pump in the Gas Tank and one High pressure Fuel Pump on the Frame rail in front the Driverside Rear Wheel.
You need to clean or change your heater core Also check your rad cap to be sure that it holds the pressure change it every 2 years minimum
2003 cadillac cts has the oil pressure light on
a trans pressure shoul do
The refrigerant 134 loaded through the LOW PRESSURE side of the vehicle a/c system, but I will say if you are not knowledgeable, nor equipped on refrigerants-LEAVE IT TO A PRO--you could get hurt or cause damage
The proper pressure for you vehicle's tires will be listed on the label on the driver side door jamb.
go to local auto parts store and get a Qwest Subzero r134a kit and Eldorado should be 2.0 lbs and you must remove the black cover off of the port near the coolant recovery tank and then check pressure with a pressure guage and make sure it's low first if so...Turn car on with A/C hi and use valve bleeding apparatus to release freon from can into port until pressure guage shows green or ok...shaking can while doing so...cappire!
The 1983 Cadillac Deville oil pressure sensor can be found on the side of the engine. The oil pressure sensor will be on the left-hand side of the engine.
oviously you have a vacume-leak intake to modulator-valve/or bad modulator-valve,check for leaks/replace modulator.this device controls kickdown-band apply pressure,with engine vacume
The oil pressure sensor is located on the oil filter adapter on the 1994 Cadillac Sedan Deville.