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DeVille

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Question
Overheating when driving
Thermostats can only be installed in one orientation. Unless the thermostat that was installed is the wrong one, or was defective out of the box, the thermostat is probably not the cause of the issue. Inasmuch as the overheating is...
Question
Tapping sound
Hello there, many components will cause a tapping noise with your 2003 Cadillac DeVille. The most common cause of a tapping noise is the fuel injectors. Injectors tap when they open and close and this is a normal operation. If...
Question
take long time to start first in the morning already change fuel regulator crank sensor and cam sensor spark plugs and wires
Hi there. It's possible that you've got a problem with the cold start injector on your Cadillac. The cold start injector is also known as the cold start valve. The part is located on the cold air intake, which is...
Question
oil pressure light came on shut engine I add pint of oil no light yet
If the oil level is low, oil should be added until the level reaches the full mark on the oil dipstick (no higher though). Adding oil to the full line on the dipstick will give you a safety margin just...
Question
fluctuating overheating
It sounds like you may have a sticking thermostat that intermittently opens and closes causing the random temperature fluctuation. When your thermostat is not working properly or is stuck closed, this will not allow the coolant to properly circulate through...
Question
Coolant reserve tank removal.
Hi there If you've never completed this type of repair, you should purchase a service manual for your 2003 Cadillac DeVille which will give you detailed instructions on how to correctly remove the coolant reservoir.
Question
Car runs very rough and misfires after collision?
Hi there: Depending on the severity and location of the colllision, a few things could be damaged; ranging from EVAP control module (which can be the source of the fuel tank issue) or the EVAP vent solenoid. This could be...
Question
Problem with secondary air injection and the idle is hunting.
Hi there. When the air pump is working and the engine is running fine and then when the air pump is turned off and the engine idle starts to hunt, then there may be water in the air pump or...
Question
Engine coolant leaking straight out replaced radiator and hoses and still immediately leaks fluid right out of bottom 2000 Cadillac DeVille
Hi there - you may have a leaking water pump, freeze plug, leaking hose, or cracked engine block. I would recommend a coolant leak inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your...
Question
Should i buy this car
The major issue with the car you are writing in about is the poor fuel economy. This vehicle attains less than 20 MPG which makes the vehicle uneconomical for most individuals and families. In addition, of course, you have some...
Question
My theft system is keeping my car from starting in my 1994 Cadillac Deville
Hello. If the theft light is coming on then it is causing the vehicle not to start. Most of the time the issue is caused by either the key failing or the key sensor located in the key lock cylinder....
Question
Put donut on.but it won't spin
You have either put the spare tire space saver on backwards or you have one that is not compatible with your car. If turning it around does not fix it then you will need to have the tire repaired or...
Question
I have no engine oil in my car is this why my car is not starting ?
Hi There, Generally, when the engine does not start, this can be related to many different possible reasons, however some vehicles have a sensor that measures oil pressure and will not allow the engine to run unless the oil pressure...
Question
I have a 00 deville I just changed the water pump housing and water pump the thermostat and radiator the upper and lower radiator 2000 Cadillac De Ville
Hi there - I suspect your radiator is clogged or otherwise corroded so that it is not shedding heat as efficiently as it should. Idling with the heater on was getting rid of heat without loading the radiator. When you're...
Question
Squealing in 1992 Cadillac DeVille with engine off
Aftermarket electronic mice repellants vended for motor vehicles will make the sound you describe. These are ultrasonic devices. Of course, they are battery operated or USB rechargeable and so won't last forever. I have them in my car(s) and the...
Question
My bcm is not working.
Hello. If the computer is quickly overheating and shutting off then it may be possible that excessive voltage or current is flowing too, or through it, causing it to overheat. This can be caused by wiring issues or by a...
Question
What kind of maitenance costs could I expect from a 2002 deville? I only ask because their value is so low.
It is difficult to predict future repair costs or issues. Will it have issues to deal with ? Most certainly. I say that not just because it is a Cadillac. I say that because it is a 15 year old...
Question
I have a 1991 Cadillac DeVille running very poorly very bad fuel economy she runs very poorly no power almost almost like it's bac
Hello. From what you are explaining it sounds like you have a fuel system issue. It sounds like you are getting too much fuel. It can be caused by a leaking fuel injector, but most of the time it is...
Question
Starter replacement
Hi there. It's probably a good idea for you to either view a starter replacement video for your vehicle on YouTube.com or purchase a vehicle service and repair manual for your Cadillac to get the best data and instructions for...
Question
The problem I'm having is overheating and then water starts to come out of the overfill hose on the reservoir.
Hi there. If you have removed the thermostat and the engine still overheats, then there could be an issue with the water pump or the head gasket. With the engine running at operating temperature before it gets hot, check the...

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