Question about Chevrolet Blazer

1 Answer

No heat, I have replaced heater core, engine does does not run hot so there is not a problem with thermostat, heater hoses are not clogged

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 370 Answers

2 questions for you. 1- is the blower fan working? 2- does the valve to allow fluid to go to the heater core work? its a small valve that opens and closes to allow the hot radiator fluid to to though the line. it has 2 wires coming out of the top of it on the heater hoses. try that and see if that works. you can get the valve at any auto parts store. hope this helps

Posted on Dec 29, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

I changed thermostat on 2005 buick rendevous ultra 3.6l. still have no heat. whats next?


Was lack of heat in the cabin the only reason you changed the thermostat? Were the radiator hoses hot (or very warm) to the touch before you changed the thermostat? Were the heater hoses hot before you changed the thermostat? Did you get a check engine light and code stating that the engine was not getting (or slow getting) to operating temperature?
Getting heat from your heater depends on a blend door actuator letting air flow through the heater core in the HVAC unit. If your radiator hoses are hot, your heater hoses are hot, and you have no trouble code indicating the engine is not getting to operating temperature, but you are not getting heat inside the car, you need to check your blend door actuator or the control unit for the heater.

Jan 08, 2017 | 2005 Buick Rendezvous AWD

2 Answers

Will new thermastat restore heat to my 1998 lincoln markviii lsc collectors edition?


If the engine seems to be running well, the problem is not likely with the thermostat, but with the blend door in the heater control box. These have a tendency to get stuck over time. To see if the have the potential for heat, warm the engine up to normal temperature. Then under the hood, find the heater hoses. They are smaller diameter hoses (about one inch in diameter). There are two of them one runs to the heater core, the other is the return line fell both hoses. If they are warm to the touch (almost hot), then you have coolant thru the core. If only one side is hot, then you may have a clogged heater core. If there is heat on both, the problem is in either the dash controls for the heat, of the blend box under the dash.

Oct 25, 2015 | 1998 Lincoln Mark VIII

1 Answer

1995 jeep cherokee heater problems


Get jeep up to operating temp
Turn on heater to max heat
Hood feel 2 heater core hoses goint into upper passenger side of engine compartment firewall.
They should feel too hot to hold
If it's not hot, could be 6 things
1. heater control valve is bad
2. Vacuum to heater control valve is bad
3. clogged heater core.
4. Bad thermostat
5. Bad waterpump
6. Needs more coolant (check when system is cold)

Do these things:

1. Disconnect vacuum line from control valve and feel under valve to manually move valve to open position. This should let hot water flow through core. If you now have heat inside, replace the heater control valve. Or you can disconnect the plunger on the heater control that is hooked on to the silver bar on the bottom of it. With it disconnected you can manually move it to the open position. It will always remain on.

2. When system is cold, disconnect both heater hoses going to heater core. hook up a water hose to one side of heater core and flush out any gunk. When you get done, the water should run clear. If you see lots of gunk come out, that was probably the problem. Replacement is like $20-30

3. When system is hot and engine running, squeeze the upper radiator hose (using gloves) when you release it you should feel a surge of water. Proves your water pump is working. If no surge, check thermostat. If thermostat checks good, look at the weep holes at the bottom of the water pump for traces of antifreeze. If you see a trace or stream of coolant, indicates bad pump.

4. As far as testing the thermostat, watch as your engine heats up on the gauge. when it gets to a certain point you will see the temperature rise, then lower, then rise again. This means your thermostat opened properly, cooling the system temporarily, then heated it back up. Replacement is around $5

Try these and see how it goes.

Feb 01, 2012 | 1995 Jeep Cherokee

1 Answer

A t hot temp subaru forester 1998


A car running hot can be of many causes. Thermostat can be checked by removing and place in boiling water thermostat should open when water reachs temp, hole in hoses hoses will expand when they become hot so a pinhole will open and beome lager when hoses heat, enginge needs flushing a lot of rust and dirt in anti freeze will cause the car not to run correctly, and water pump going bad. Also heater core however I would flush engine before replaceing heater core as it may become clogged.

May 10, 2011 | 1998 Subaru Forester

1 Answer

76 COUPE DE VILLE NO HEAT!!! FLUSHED COOLANT SYSTEM REPLACED ANTI-FREEZE, REPLACED THERMOSTAT TO 195 DEGREES, REPLACED A/C THERMO VACUUM SWITCH, HOWEVER FLUID IS CIRCULATING THRU HEATER CORE. THERMOSTAT IS...


Feel the hoses going to heater core, one should be hot and the other warm. If one is cold or both are then heater core is clogged. Make sure heater control valve works and as vacuum to it and or the cable is free.

Jan 16, 2011 | 1976 Cadillac Deville

3 Answers

No heat , replaced radiator , water pump, rad. cap , hoses and flushed system twice.blows cool air.whats left?


Thermostat.? if you haven't? Do it first then try it. While the car is running for a while touch the heater hoses that lead to the firewall. if one is cold and one is hot? You have a blocked Heater core. Follow the hoses back to the engine. Unconnect them both. By using a garden hose flush out the heater core do one side and then reverse by doing the other hose Lots of junk will come out so be care ful. Mistake people make is "Flushing the system" That doesn't mean your flushing the heater core.
Seeing that you have done everything else it could be the thermostat which you didn't list or the heater core being clogged. When you finished installing the thermostat and flushing the heater core out. Replenish the coolant system . If you have a bleeder on the thermostat housing? use it . loosen it and top off the fluid until you see fluid comeout of the bleeder. The system being air bound would cause no heat..

Jan 10, 2011 | 2000 Buick LeSabre

1 Answer

I have a 1993 Jeep Grand Cherokee. I just replaced the heater core that started leaking. I put in another one and now my heater does not put out enough heat. Even before I changed the heater core, my...


not sure on your cherokee but often there is a valve in the heater hose line just as the water enter the heater core .. the valve is controled by the the selection of heat or cool .. those valves frequently clog up and need replaced ... you might also have an air lock in your heater core .. if air is trapped in there then it doesnt want to come out and it occupies a portion of the heating surface .. you can take the top heater hose loose with the engine running but not hot .. that will blead off any air in the core .. it will also show you if you have a clog .. you should have lot of water flow thru there with the engine running .. you may also have a bad thermostat .. if that the case then the engine wont get up to temperature preventing the heater from working properly ..

Feb 22, 2010 | 1993 Jeep Grand Cherokee

2 Answers

I have an o2 altama and the heater does not work just cold air any suggestions


With the engine warm and the heat turned on, feel the hoses going through the firewall to the heater core. If one is hot and the other cold, you have a clogged heater core which must be backflushed to clear a blockage.

If the hoses are both cold, move up the hoses until you find a valve. This is the heater control valve. If it is hot on one side of the valve, that valve is clogged or shut. Investigate why the valve is not passing coolant - a clog or the actuator is broken/disconnected.

If both sides of the heater control valve are cold, replace the thermostat. While you have the thermostat housing open, make sure there are no blockages in the connection pipes.

Feb 04, 2010 | 2002 Nissan Altima

1 Answer

Not enough heat coming out of the heater of 1988 2.5L Jeep Wrangl


it sounds to me your heater core is plugged. you can try to back flush it,being this vehicle is twenty yaers old,i would say to replace it

Dec 15, 2008 | 1988 Jeep Wrangler

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

70 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

77169 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22258 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...