Question about 1997 Jeep Grand Cherokee

1 Answer

Heater has very little heat coming out of it. Thermostat seems fine and there is no air in the system. Any suggestions? Thanks

Posted by on

  • 1 more comment 
  • Dennis Jannone Dec 14, 2009

    Shows normal

  • Dennis Jannone Dec 14, 2009

    Shows normal

  • Curt Downs May 11, 2010

    What is the temp gauge indicating after 15 minutes of driving? Normal range, cold range, hot,?

×

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.

    President:

    An expert whose answer got voted for 500 times.

  • Jeep Master
  • 1,779 Answers

You may have a heater control valve that is stuck in the closed (or mostly closed position). It regulates the flow of coolant into the heater core, it is mounted in the heater hose line under the hood. A $30 part. I had no heat and this is what was wrong with my Jeep.

Posted on Dec 14, 2009

Testimonial: "Great information now I'll check it out over the weekend as everything else seems to be ok. Thanks! Dennis"

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 there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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 repairmen in the US.

Here's a link to this great service

Good luck!

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:

1 Answer

Flush clogged heater core


The coolant is green because there is anti freeze and rust inhibitor that colours the water. If there was a blockage the engine would overheat. I suspect the thermostat has jammed open.

Mar 12, 2017 | Nissan Murano Cars & Trucks

2 Answers

My heat is not working very well.its blowing strong but very little heat i changed thermostat still doing same thing


have the coolant system pressure bled as an air lock in the heater system will cause this problem.

Dec 21, 2013 | Cars & Trucks

1 Answer

2008 V6 3.9 pontiac montana still over heating


Hi, Yes you have an air lock in your system, you may get this sorted by 1/. Removing one of the cooling hoses & try to blow with air.
2/. Drain all the system then put your heater on inside the vehicle & have the engine running & refill the system Start to do this from a cold engine. Please leave me feed back: Malcolm Campbell, Thanks.

Oct 27, 2017 | Pontiac Montana Cars & Trucks

1 Answer

The temp guage pegs out on my 2005 uplander. I have changed the thermostat and flushed the radiator. The water pump seems fine and both radiator hoses get hot after it runs for a while. The fans kick on...


Having a blocked heater core will not make the engine over heat. You will just not get any of the heat from the fluid that would normally be pushed through the heater core because your core or cores are blocked (I think you have two cores if you have a rear heater.). The engine does not need your interior heater cores to keep cool. When you select "heat" on your console, either a valve opens up and allows fluid to move through the lines to your heater cores and or an air duct opens to the cores to blow air across them...


Did your heater work before your work?

Does the gauge stay pegged or does it fluctuate?


If your gauge now fluctuates after your work, it would indicate to me that there is air trapped in the engine or bubbles passing by. The air does not cool the engine block as well so the temp will rise quickly. It will then cool a bit as the coolant splashes by. If your gauge is staying hot and never moves, it could mean: you are missing a lot of coolant, trapped air near the temp sender, or your thermostat is not opening. A closed thermostat would make the gauge go all the way hot and stay hot. The thermostat can be checked with a pan of boiling water on the stove. When boiling, put the thermostat in the water and check to see if it opens. It is also important that the thermostat is installed in the correct direction. The temp sensor much be on the engine side. I am also assuming your pump shaft is not sheared and is still connected to the impeller and it is spinning as well. You can take your belt off and move it by hand to see if you feel any resistance. If you are sure the thermostat is opening and the pump circulating, I would then check and see if you have air in trapped in your system. I looked at my Uplander and noted a lot of hoses and metal pipes at a higher level than the filler neck of the radiator. Perhaps, when you filled your system back up from the radiator, that a lot of air got trapped in the upper part of the engine and the heater lines. I also saw that there were little brass valves near were the hoses connect near the pump and on the driver side. I would suggest running the engine and open and close the little brass check valve on the divers side to see if you have fluid or just air coming out. I wouldn

Nov 12, 2010 | 2005 Chevrolet Uplander

1 Answer

Same problem: 2001 Toyota Tundra that won't blow


that is entirely possible yes, could also be a broken cable to change the temp from hot to cold, could be a problem with certain ac components under the dash

Mar 12, 2010 | 2001 Toyota Tundra

2 Answers

Heater problem with 1994 Suburban. have replaced radiator, thermostat (3 times). Also flushed the system and have run water (via garden hose) directly through the heater core. the flow seemed good. The...


If your temp is jumping between 150-200 degrees then I am guessing you have an air pocket in the engine where coolant should be. The air pocket moves through the engine and when it gets to the water pump, it looses prime and doesn't move the antifreeze which causes it to warm up. Take the radiator cap off the radiator when the engine is cool. Start up the engine and let it run until the thermostat opens up. As the air moves it's way to the radiator it will escape and you will see the antifreeze level go down. Watch it run and as the level goes down add antifreeze until the radiator remains full. Then make sure your overflow tank is up to the required level and I bet your heater works a lot better after that.

Good luck.

Jan 29, 2010 | 1994 Chevrolet Suburban

1 Answer

Blower is working but only cold air is coming out.


you forgot to bleed the heater,,, it has an air lock in it,,,fined the top hose with the bleeder velve in it and bleed the air out the system by topping up the rad and open the bleed velve
dont do this with a hot engine??? it hurts!!!

Oct 30, 2009 | 1995 Subaru Legacy

1 Answer

2006 pontiac grand prix vary little or no heat


Are you sure you got all the air out of the cooling system? Air pockets are very common problem when you do any work to the cooling system. An air pocket will do what you discribe.

Mar 18, 2009 | 2006 Pontiac Grand Prix

2 Answers

Heating problem


But have you changed the thermostat in the engine, you are describing a sticking thermostat.

Oct 22, 2008 | 1996 Chevrolet Impala SS

Not finding what you are looking for?
1997 Jeep Grand Cherokee Logo

Related Topics:

315 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

Marvin
Marvin

Level 3 Expert

83481 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22393 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

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

Answer questions

Manuals & User Guides

Loading...