Question about 2000 Mercury Grand Marquis

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On a 2000 Grand Marquis 4.6 V8 engine: is the heater hose from the water pump that is routed under the intake manifold a dealer item only?

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Yes tube is dealer only

Posted on Feb 05, 2010

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1 Answer

2002 gran marquis loosing water around firewall where could it be coming from it's squirting out(engine compartment)


There can be a water fitting to the heater hose located under the rear of the intake manifold.

Jan 14, 2017 | 2002 Mercury Grand Marquis

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What is the heater hose routing on an 86 mercury grand marquis 5.0


Look at the fire wall you will see two hoses going through the wall they are 3/4 inch they will be your heater hoses one routes out the back of the intake manifold I believe the other is by the ECM valve.
Are you missing your heater hoses if so it may be that you have a bad heater core have you owned this car for long. If you are needing to reinstall all your hoses look on You Tube you will probably find a video telling you how to do it.

Jan 09, 2015 | 1986 Mercury Grand Marquis

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Where is the water outlet on a 1997 Mercury Grand Marquis


What they mean is the water coolant hoses connected to the inlet manifold these will need to be removed as part of the job l can`t fore see any major problems it`s pretty striaght foward..

Jan 05, 2013 | 1997 Mercury Grand Marquis

1 Answer

Coolant line under intake is leaking 95 town car


95 Lincoln town car coolant leak under intake SOLUTION EASY

Ok this is a 4" piece of hose leaking on a tube that runs under the intake manifold and fastens to the rear of the engine with 2 small bolts that are very hard to get to. The heater core hooks up to this tube with a 5/8 hose that's 3/4 on the other end going into the heatrer core.
Solution:
remove alternator
see clamp on hose?
remove it.
If you can't remove it, clamp vice grips on it and take a steak knife and cut through the hose towards the rear of the engine. Now with large screw driver pry the hose and clamp off the nub on the rear of the water pump housing. You may have to move the tube and remaining hose out of the way first. Just stick your hands in there and force it out of the way. Now you have a clean nub to hook a 5/8 bypass hose to. Here's where you get it. Go back to the heater core and and remove the hose that connects to this tube that runs under the intake. Just cut it where it hooks to the tube and remove it carefully from the heater core because this is now your needed bypass hose. Now with a couple feet of 3/4 hose and a coupler you have all you need to reroute this water outlet around the engine to the heater core. Take your hose you cut from the other end of the tube and removed from the heater core and and fasten it to the nub on water pump housing use new screw type stainless Steel clamps. You have to take this one apart to put it on. Stick a 3/4 coupler into the other end and route a long section of 3/4 hose under alternator to the heater core using SS clamps where needed. job done... Just leave the old tube where it is under the intake manifold......Thank you Very Much

Feb 14, 2012 | 1999 Lincoln Town Car

1 Answer

Where is water temp sending unit on a 99 marquis


There are two. One is the sending unit for the temperature gauge. It is located in the intake manifold runner just to the left of the alternator. (Left, meaning your left as you are facing the front of the engine -Passenger side of the engine)
The other is the sending unit for the computer which is located in the left cylinder head under the intake manifold. (In this case, Left means the engine left bank or driver's side of the engine.) The intake manifold must be removed to get to it.

Dec 26, 2010 | 2000 Mercury Grand Marquis

1 Answer

Grand Marquis LS 2004 smoking under hood on drivers side what is possibility of being gasket? no broken hoses ..not short on oil. no leaks..no radiator or heater problems. ..brand new thermostat installed...


This model uses a composite (some would say plastic) intake manifold, which has been known to develop cracks in the area of the thermostat housing. In addition, the water pump has a pipe to the back of it that emerges in the rear of the intake manifold. Both of these areas peculiar to this motor are known to leak coolant. In its history, many of these plastic manifolds had to be replaced, and there were even techinical bulletins from Ford on them. If you have leak in the tube or pipe that goes under the intake manifold to the back of the water pump, then you will likely want the dealer to fix it, as you may need a new water pump.
Two things then to watch: 1) coolant level and color and 2) any signs of leakage behind the main serpentine belt in the area of the water pump.
Since the serpentine belt is large on the 4.6L motor, and due to its rotation, it is possible that you only have a bad water pump and that the liquid is being thrown by the rotation of the motor. The water pump is not a difficult repair, as it comes off with only a few cap screws. However, if it is detached from the rear inlet pipe (as I mentioned above), it would require that the manifold be removed for it to be reattached. This is not a difficult job, but is very time consuming.

Nov 28, 2010 | 1989 Mercury Grand Marquis

1 Answer

My truck just started blowing antifreeze from the right side of the motor under the alternator i pulled the brackets off the front and the water pump but i could not locate where it was coming from what...


If that is a 318 or 360 V8 check the small hose from water pump to the intake manifold they had a habit of developing a leak and it can spray over towards the alternator.
it is a short L shape hose from water pump to intake manifold.
Also check heater hose under the alternator for leaks or cracks.

Nov 14, 2010 | 1999 Dodge Ram

1 Answer

Change a thermostat 2000 marquis


  1. Drain the coolant below the water thermostat.
  2. Remove the engine appearance cover.
  3. 84796017
  4. Remove the bolts, the water outlet adapter and hose and position out of the way.
  5. 84796018
    1. Remove the water thermostat and the O-ring seal from the intake manifold.
      • Inspect the O-ring seal, install a new seal if necessary.
    1. To install, reverse the removal procedure.

Jul 02, 2010 | 2000 Mercury Grand Marquis

1 Answer

Coolant fluid leaking below carberator 1989 dodge daytona


May not apply to yours, but I have seen coolant lines routed under intake (actually through plenum below carb)...the idea is to pre-heat and vaporize fuel to prevent "puddling" under carb. If you look at most v8 engines, exhaust is routed the same way, to do the same job. You may need to use a mirror to see under there to determine exactly what's going thats causing leak.

Apr 05, 2009 | 1989 Dodge Daytona

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