Question about 1992 Cadillac DeVille

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Broken coolant line

92 Deville coolant lines with two flange pipes coming together under car by passenger wheel suspension with hose connecting them are corroded and developed pin hole leaks and then failure. What are they called?...what are they for?? where to get replacements? Difficult to change?

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Coolant bypass tube for heater . put the car on a lift to change.be safe. its easy to change.

Posted on Jan 12, 2009

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1 Answer

Where is the fuel filter on my 92 Cadillac Sedan deVille


Most gm cars for that year have the fuel filter located under the car on the passenger side just about midway or a little aft the front passenger wheel . You cannot see it unless the car is on a lift or you can crawl under. It is an in line canister shaped filter that is secured with a band type bracket. each end has a nipple that you slide the gas lines over and plastic locking clips that should come with the filter.

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HOW DO i REPLACE THERMOSTAT 1997 CADILLAC DEVILLE?


The most common overheating problem with the Northstar engine is a blocked purge line(small hose).The purge line is designed to purge air out of the cooling system.
There is a small diameter hose coming from near the top of the coolant tank (not the cap) ,this is the purge line.
With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.
If the hose is clear, check for blockage at the nipple on the tank.Or trace the hose back until you find the blockage.
The hose goes in to the engine to a crossover and comes out the other side close to the thermostat housing,the blockage may be there.
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The thermostat in the northstar engine is located at the bottom radiator hose (unlike most conventional cooling systems), the hose connects into the housing where you will also find the water pump.

You will need to remove the air filter housing and air duct to gain easy access to the thermostat.

Remove the hose from the housing,then remove the two bolts on the flange,the thermostat can then be pulled out.

Take note of the orientation of the thermostat as you remove it.

The thermostat in the Northstar engine is a dual action device.
One end of the stem is the Thermostat(obviously) and at the other end is a spring loaded pressure valve(the thinner end).
Make sure the thermostat end is nearest the rubber hose and the pressure valve end is in towards the engine.

Feb 14, 2015 | 1997 Cadillac DeVille

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2005 buick lesabre AC hose plugged leaking water onto passenger floorboard. How do I fix this?


You need to find the drain pan line that comes through the firewall. Open the hood and search for the line on the passenger side firewall. The line is probably clogged from insects, animals, or other gunk. use a short piece of dowel or wire to unclog the line and allow the pan to drain to the outside of the vehicle.

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2004 trailblazer coolant leaking rear


It may be from a rear heater, possible corroded line, had the problem with my suburban and my sisters 4 runner. just replaced the line.

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On my 96 deville i have a coolent leak coming from passenger side of engine towards the fire wall by front tire


Hello: Check the coolant overflow tank, the hoses and the metal pipes the hoses attach to. If there is bubbling in the tank after driving the you may be low on coolant or have a blown head gasket problem.

Oct 24, 2011 | 1996 Cadillac DeVille

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I need to know the name of the pipe conected to the bottom of the radiator into the motor?


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c...

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1 Answer

1998 Kia Sportage heater return hose location....


Actually it does make sense. All you need to bypass the heater core is a section of pipe that can be used to connect the Heater core Supply and return lines together. All they actually do is make a loop using the heater core as the turnaround. This is normally 5/8 hose and any metal pipe section can be used as long as the hose fits on it and you can put a water clamp on it to hold it in place. In fact, if you have a control valve on your heater core line going into a piece of hose connected to the Firewall you can disconnect that and use it to connect the two lines together in a pinch. radiator flush kits come with a piece that attaches to these lines for flushing the system. Your supposed to cut the line and put this part in between the two pieces but you can just as easily disconnect the lines from the firewall and attach them with this piece. A Yard water hose slicing kit, metal, would work just as well as long as you have to correct size. Good Luck.

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2 Answers

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The AC condensation drain tube is also located on the passenger side fire-wall towards the bottom of the fire-wall, it is there to drain the condensation from the evaporator/core plenum so that it does not flood the passenger compartment floorboard with water and it can easily be viewed from under the vehicle, and if it is cool clear water that is leaking and not hot coolant then you have no problem and that is a normal condition when the AC is operating.

If it was a coolant leak the cooling system would be low on coolant, and the engine would run hot when the coolant gets low.

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I cannot find the water bypass part that is located from the radiator to the motor...what is the real name to that pipe


it's your heater core lines. the 2 lines that come out of the fire wall on the passenger side under the hood.

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