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Where thermostat housing hoses diagram 2.2L

Need to know where hoses go from thermostat housing to motor and heater core?

Posted by Anonymous on

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Posted on Jan 02, 2017

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SOURCE: 1998 Saturn SL1 - I

Hi,
As both hoses from the heater core are hot, there is no need to replace the heater core.
The problem will be in the heater control under the dash. I have no experience with Saturn, but I am responding to your problem so as not to remove the heater core.. That would be wasted time and money. The heater, A/C mixture control is the problem.
Someone else will need to guide you through the rest of the way.
Sorry i could not lead you all the way through.
Wayne

Posted on Nov 17, 2010

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2.8l. How can I replace thermostat?


Not from what I am reading. Here is the procedure from the AutoZone repair guide.....

2.8L & 3.6L Engines

  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Drain the cooling system.
  3. Disconnect the heater hoses from the heater core.
  4. Remove the thermostat housing bolts.
  5. Remove the thermostat housing with the heater pipes, hoses and bolts.
  6. Carefully clean the sealing surfaces with a plastic gasket scraper.
  7. Remove the thermostat.


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To install:
  1. Assemble the heater pipes and hoses to the thermostat housing.
  2. Install a new gasket to the thermostat housing.
  3. Install the thermostat.
  4. Install the thermostat housing bolts to the thermostat housing. Partially install the thermostat housing bolts in order to retain the gasket.
  5. Install the thermostat housing with the heater pipes, heater hoses, gasket and bolts.
  6. Install the thermostat housing bolts and tighten to 15 ft. lbs. (20 Nm).
  7. Connect the heater hoses to the heater core.
  8. Fill the cooling system.

Jan 30, 2016 | 2007 Cadillac CTS

1 Answer

I need to locate the inlet heater hose on a 2006 Jeep GC 3.7L V6. both hoses seem to go to the same place.


Yes they do appear to go to the same place but it isn't. Water comes out of the engine from one hose and returns to the engine on the other.
Attached link shows how to flush a heater core on a jeep. It doesn't really identify which hose is which but I would guess the the smaller hose comes from the engine and larger one returns it to the engine.
Because the water from the engine is under pressure and the return is under less pressure and larger to allow full flow.
2003 Jeep Liberty 3 7L Flushing the Heater Core

The second link shows the thermostat housing that the other ends of the hoses connect to.
How To Install Replace Engine Coolant Thermostat and Housing 3 7L 2002...

Sep 15, 2014 | 2006 Jeep Grand Cherokee

2 Answers

I had to bypass my heater core. I snaked a hose from the input pipe around the motor and tied back in at the thermostat BYPASS HOUSING. I started with a 5/8 hose piece to a 3/4 elbow back to a 5/8 hose...


Was the heater core leaking? Have you checked your thermostat? By passing a leaking core should stop a running hot problem if that was your only leak. Does your cooling fan come on? Has the car been run extremely hot?

Oct 06, 2013 | 1993 Pontiac Grand Prix

1 Answer

How to back flush heater core 2007 grand prix


drain coolant system locate heater cores hoses going through firewall you need to buy the radiator flush kit at any auto parts stores. remove heater cores hoses from one end or buy extra long heater hoses same size as heater core hoses in vechicle at auto parts store use the flush kit when you flush through one of the heater core hoses let the other hose drain in a drain pan when you use home garden hose use low water pressure dont use garden hose to the max or you will rupture heater core. your best bet let radiator shop flush whole coolant system. because heater cores hoses are in a tight spot.make sure engine off if you just going to flush out heater core only .after flushing heater core good time to replace heater core hoses.if job too hard or complicated let radiator shop flush out radiator the engine block and heater core because if radiator stopped up or engine block stopped up the gunk and rust will reenter plug up heater core.if you tight on money you can flush out your own radiator.drain out radiator using large drain pan. remove top radiator hose and remove bottom radiator hoses connect to water pump.use garden hose with flush kit part with water pressure not too high put garden hose to top radiator hose run water until clear water run out bottom radiator hose in drain pan,the flush out engine block remove thermostat.if you had another spare thermostat housing with RTV SILICONE SEALANT THAT HAS SET UP INSTALL THERMOSTAT HOUSING BACK TO ENGINE WITHOUT THERMOSTAT FLUSH OUT THE ENGINE BLOCK, WHEN DONE INSTALL NEW THERMOSTAT THEN INSTALL ORIGINAL THERMOSTAT HOUSING WITH NEW ORING WHICH YOU BUY AT DEALERSHIP.IF ALL SOUND COMPLICATED LET RADIATOR SHOP FLUSH OUT COOLANT SYSTEM.

Nov 27, 2012 | 2003 Pontiac Grand Prix

2 Answers

I dont have any heat and i need to know how to replace the hearter core, however the windows aren't fogging up so maybe its the thermostat


the only way you should have to replace a heater core is if it leaks or gets plugged up. When motor is hot feel the two hoses that go to the heater core. one should be fairly hot and the other should be the same but if one is just warm then follow hose and locate a flow valve and check for operation. OPening and closing with control hot /cold knob. Check coolant level in radiator while cold as well as fill reservoir to full when cold. Also remove radiator cap when cold and warm truck and check for flow of coolant. if lower radiator hose is hot hot hot and upper hose is cool then thermostat may not be opening properly, or thermostat is stuck open not building heat. You didnt mention if truck was overheating?? If its not i'd check for the flow valve operation, if it is i'd make sure coolant levels are full and waterpump is working.

Feb 03, 2011 | 1994 Chevrolet Astro

2 Answers

1998 jeep cherikee. Very little heat. Heater core supply from thermostat housing is hot core return line is very cool. Coolant level is full. I do not see any flow control valves on heater hoses. What...


Either the heater core is pluged with rust,or maybe some one has used stop leak in the radiator,and caused a blockage.You can take one hose off the heater core,and the other hose off the thermostat housing.Take a garden hose to the one you took from the thermostat housing and see if it is plugged.If you get a good stream out the other end it is ok.Then the other most common thing is where the hose that goes in the intake is narrow and often gets plugged with rust or corrosion.When you take that hose off,you will be able to see the blockage if it is that.

Jan 30, 2011 | 1998 Jeep Cherokee

1 Answer

1993 buick lasabre is leaking water in the car heating coil gone out. I need to know what hose to cut and plut to by pass heater


loop the heater hoses that go into the heater core,the big one(feed)hose re route to the thermostat housing.by pass return,you don't need if your by passing the heater core.











TIM......

Oct 31, 2010 | 1993 Buick LeSabre

1 Answer

Engine was overheating need to know if a tube is supposed to go from the radiator to the engine coolant


you should have one upper radiator hose, one lower radiator hose, a small diameter hose that runs over the top of your radiator starting from the radiator cap going left across the top and then to your coolant reservoir and another from your thermostat housing to the firewall for the heater core the upper radiator hose should also go to your thermostat housing. the lower radiator hose goes to your water pump This hose routing is only for a 4 liter straight 6 I'm not sure about the V8 or the 2.5 liter motors

Sep 24, 2010 | 1995 Jeep Grand Cherokee

2 Answers

I have a 2002 pontiac firebird v-6 3800. The heater hoses run into a part that is attached to the motor. I am trying to find the name of the part so I can replace it or find an engine diagram for that...


Paul, if you mean "radiator hose" then the part is the thermostat housing.

Perhaps the part is the bypass valve, which causes the heated water to "bypass" the heater core if the core is restricted.

Sep 28, 2009 | 2002 Pontiac Firebird

1 Answer

How to replace heater core in a 1988 jeep cherokee?


Jeep Cherokee XJ Heater Core

Work for '92 models, but can use it like a reference guide.

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Figure 1

  1. Disconnect battery ground cable, then drain cooling system.
  2. Disconnect hoses from heater core.
  3. If equipped with A/C, remove evaporator/blower housing as follows:
    1. Discharge A/C system, then disconnect hoses from expansion valve.
    2. Disconnect electrical connector and vent tube from blower motor.
    3. Remove console, if equipped.
    4. Remove lower instrument panel attaching screws, then the lower panel.
    5. Disconnect electrical connections from A/C relay, blower motor resistors and A/C thermostat.
    6. Disconnect vacuum hose from vacuum motor.
    7. Cut evaporator/blower housing to heater core housing retaining strap, then disconnect heater control cable.
    8. Pry retaining clip from rear of blower housing flange, then remove the three retaining screws.
    9. Working from engine compartment, remove evaporator/blower housing attaching nuts, then the evaporator drain tube, Figure 1.
    10. Remove right kick panel, then the instrument panel support bolt.
    11. Pull right side of dash outward, then rotate housing downward and towards rear of vehicle until studs clear dash panel. Remove housing from vehicle.
  4. Remove heater core to housing retaining screws, then the heater core, Figure 2.
  5. Reverse procedure to install.
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Figure 2

Personally, I'd pressure test the cooling system then look at the heater core to see if it leaks. It may just be a loose clamp or leaky hose.

Also can check the forum jpmagazine.com

I hope help you; good luck (remember rated this).

Sep 15, 2009 | Jeep Cherokee Cars & Trucks

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