Question about Jeep Grand Cherokee

1 Answer

I have a 1994 jeep cherokee 4.0 . when heater is in hot or cold position it allways blows out of the defrost. any one can help

Posted by on

  • kingfishtx Mar 25, 2009

    My 1995 GC has same problem. Only just started to blow out hot or cold air out defroster vents. Took to dealer year ago and they fixed for few hundred dollars. but just reverted bac to same condition after year.

    Anybody know what they fixed ?

  • curt88 Apr 08, 2009

    I have the same problem but it only blows cold air and when i start the read out for the controls says ...ER... any help

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 475 Answers

This is a vacuum problem. Under the hood on the pass. side by the firewall there is a vacuum line that feeds the heater doors. This line is either disconnected or broken. These cars also have a vacuum resoivor that stores vacuum, this could be broken or leaking vacuum.

Posted on Dec 03, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My heater won't blow hot in my 2001 Jeep Cherokee


Does it leak any antifreeze on the floorboard or anywhere? Common problem with the jeep cherokee that the heater or A/C will cause it to leak and had to replace the whole unit.

Dec 08, 2012 | Cars & Trucks

1 Answer

Air only blows from the dash vents and will not change to the defrost or floor, and I have no heat - only cold air. Air conditioning seems to work. 1994 jeep grand cherokee v8 with climate control.


the damper or flapper ibside the heater box is not moving. If they are vaccum actuated could be lack of vaccum or bad diafram in the actuator...replace

Sep 09, 2010 | 1994 Jeep Grand Cherokee

1 Answer

I have a 1996 cherokee country. When I use y


Could be the control switch itself. Or possibly the actuator that moves the door from defrost to heater. With the heater on, try switching from defrost to heat and try to hear if you can hear anything in the dash operating.

Mar 09, 2010 | 1995 Jeep Cherokee

2 Answers

Heater doesn't get hot, air blows good, just not hot to warm car or defrost windshield


your heater box needs to be clean use clr in the 2 lines let seat over night flush and reconnect lines

Jan 13, 2010 | 1995 Jeep Cherokee

1 Answer

I have a 2003 Jeep Grand Cherokee Overland with automatic climate control. The drivers side blows cold air constantly. It has no heat.


sounds like the blend door motro may be bad, this motor is screwed to heater box, there are a few of these motors one for pass/side for hot/cold air then one to control position of air like defrost or vent or floor, then the driverside cold/hot air, i think this motor is on driverside part of heater box, to make sure locate each motor while moving all controls until you spot the one that doesnt move, then remove it and move door manualy to see if you get heat, then replace that motor, hope this helps,

Dec 26, 2009 | 2003 Jeep Grand Cherokee

1 Answer

Grand cherokee heater blows cold air


Check the coolant level, sounds like you may be slightly low....Be sure heater is on high when filling the system....Look for any air bleeds...

Dec 06, 2009 | 2003 Jeep Grand Cherokee

1 Answer

1994 Jeep Wrangler, heater problems


Sounds like the blend door that diverts air flow inside the heater box is not working, or, the heater control valve on the heater hoses in the engine bay is not closing.

Jul 30, 2009 | 1994 Jeep Wrangler

1 Answer

Heater only blows hottest temp no blend of hot and cold


Sounds like something was left disconnected behind the a/c control panel.

Nov 15, 2008 | 2001 Jeep Cherokee

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

Related Topics:

240 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

60667 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21936 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

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

Answer questions

Manuals & User Guides

Loading...