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DeVille

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Question
I have a 99 Cadillac deville that keeps over heating.I've replaced the water pump and thermostat its still running hot
The most common causes of overheating include low coolant level (including that due to leaks), a faulty thermostat, a plugged radiator, a faulty radiator pressure cap, collapsed hoses, non functioning cooling fans, and a faulty water pump or drive belt....
Question
Why is my temperature gauge going up and down?
Hi There, It sounds like you may have a sticky thermostat or potentially a cooling fan that may be working intermittently. The thermostat regulates the flow of the coolant in your car's engine and controls when the coolant flows in...
Question
Water pump leaking
If you're positive the water pump is the source of the leak, then the replacement pump was not properly installed. Either the seal is skewed or the pump is not tightened down correctly. I recommend that you have a cooling...
Question
The car won't start.
Hi there. Assuming that the battery is good, the connections are clean and tight, the replacement starter is good, the security light is turning off. There are several things that still can affect starter operation. If, the vehicle will start...
Question
Radiator
The lower radiator hose goes to the water inlet on the engine block. If there is a problem with any of the radiator hoses, or any part of the cooling system please feel free to request any of the cooling...
Question
Overheating problem with my car.
Overheating is a serious problem that can result in extensive engine damage. It can also be caused by many different failures, from a faulty water pump to a blown head gasket. A qualified technician, such as the ones at YourMechanic,...
Question
Loud exhaust
Hello. The symptoms and situation that you describe are commonly associated with an exhaust leak. If your muffler or exhaust pipes were bent when the accident occurred then it is very possible that they developed an exhaust leak and are...
Question
Leaking power steering
Greetings! There are a few things likely causing your leak: a low pressure hose, high pressure hose, leaking pump, or a leaking rack and pinion. I suggest having these components inspected for leaks by a certified technician, such as one...
Question
Key stuck in ignition
The problem may not be in the ignition switch but in the transmission shift linkage. Try and push the shifter up into park and turn the key at the same time. There are technical bulletins for the shift linkage causing...
Question
Engine
Hello. Thank you for writing in. Do not assume right away that you have blown a head gasket. When the cooling system overheats and throws coolant all over the engine bay, every hot part of that engine will create steam....
Question
Cooling fan not coming on
Most of the time when the fan stops coming on it is caused by a fan failure. If the fan stops working it means that either the motor in the fan failed or it blew a fuse. If it blew...
Question
Coolant leaking into cylinders
Hi. As coolant is burned through the combustion chamber, it travels through the exhaust which can damage your catalytic converter. This will lead to the clogging of your exhaust and can cause different problems with your vehicle. If you need...
Question
Car won't stay running
Sounds like you might be having an alternator problem. The vehicle uses the battery to start, once it is running the alternator takes over providing the vehicle with all the electricity it needs. If the alternator fails, the car continues...
Question
Car running very rough
A rough idle can be caused by many things. Injector problems, worn ignition components like spark plugs and wires, or vacuum leaks are all examples of things that can cause symptoms similar to what you are describing. Products like Seafoam...
Question
Car not starting
If you are having an issue with the security system, the security light on the dash should light up. I would have the battery tested. A dead battery can cause all kinds of computer issues. If you find that the...
Question
Car cutting off while driving
This could be a fuel delivery issue, but it is hard to say exactly. Your vehicle has a complex engine control system that can self diagnose issues most of the time. Start by having the computer read and see if...
Question
Car clicking when starting
Hi there. This sounds to me as like an issue in your anti-theft system. When your vehicle has its battery changed, the power is reset. This commonly triggers the anti-theft system which tell your computer to lock up. Have a...
Question
Alternator not charging
The alternator charging rate is controlled by the engine control module under the air cleaner housing. You should disconnect the battery and check the connections at the engine control module and look at pin 54 on connector one (C1). It...
Question
I installed a after market radio in my 2002 Cadillac Deville and no sounds will come from my speakers. But when I put my stock rad
Your car might have a built in amplifier that requires a 12 volt signal to be sent in order to turn on the amplifier. The wiring harness for your stock radio may already accommodate that but the new radio has...

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