Heater only blow on number 4 and heat coming out

Buick LeSabre Heater - RepairPal

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Buick LeSabre Heater blows only cool air...even w/ defroster on. This is a ... Heater fandoesn't come on . ... The blower works but there is no heat coming out.

Blower Motor Problems ' Auto Repair Help - YouTube

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https://www.youtube.com/watch?v=2vmfxYg8LoY
Sep 27, 2009 - Uploaded by mgittelman
The blower motor is a common heater/AC repair within the skill level of ... However if the power wire is a single light purple wire and the ... for blower motor and fuel and relay good but no powercoming on both any ideas? ... my o5 seira, when i start the engine with the air switch on it blows my blower fan ...

Car Air Not Blowing, Heat & Air "How to" Test Testing ...

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https://www.youtube.com/watch?v=hgar6Q1lV6A
Apr 5, 2013 - Uploaded by Fixbook
Here I show how to determine the problem if your air, or blowermotor is not ... Click here to check out the the "Car Runs on 2 cylinders" series: ... How to Fix Over-Heating engine & No Heat in car - Buick (2000 yr) Park Ave . ... Car fan / AC only works on high - Replacing the Blower Resistor - Duration: 4:24.

Buick Park Avenue Questions - NO HEAT!!! - CarGurus

Jeep Liberty heater not blowing hot air Questions & Answers ...

www.fixya.com > ... > heater not blowing hot air > Cars & Trucks > Jeep

Jeep Liberty cars & trucks heater not blowing hot air questions and answers. Ask your Jeep heater ... My 2005 Jeep Liberty will not blow heat through ... properly.

jeep liberty 2002 heat problem/hvac box issue - YouTube

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https://www.youtube.com/watch?v=xf22fvcN1hU
May 28, 2013 - Uploaded by Joffre richer-desroches
Joffre richer-desroches. ... How To Install Replace Engine Coolant Thermostat and Housing 3.7L 2002 ...

warmth comes from the heater in the car
if it is climate control check the climate control module
check for heater control in the vent settings as the hot water tap may not be turning on

I have the same problem with my Dodge Avenger. The issue is with the heater core. The company that made the heater cores for Dodge that year put to much flux in it. The flux comes loose and you get a sludge build up in the heater core that drops to the bottom of it. The heat for the passenger side blows on the bottom of the heater core. So that is why the air is cool on that side. Solution: you can try flushing the the system. If you take the cap off the coolant reservoir you will see the sludge build up. It has a reddish tint to it. Hope this helps.

take the top off the filler cap run engine to boil. keep it full off water to the top. you will see air bubbles coming out as the engine gets hotter. squeeze the pipes on the rads to help the air come out. when fan kicks in turn engine off and leave to cool down.while you are doing this make sure the fan for heater is off but is on full heat. can have fan on number one on speed that is fine.

Heat control switch is bad if you turn it all the way cold and it still blows hot air.

Plugged heater core or bad water pump. don-ohio

If the heat blows hot, the defrost should also. If the heat does not blow hot air, it could be your thermostat, your heater core valve, or the heater core itself. with the vehicle being a 2002, the heater core is the least likely.

Since your blower is working and it is a heat issue,thats where we'll start,First thing is have you checked the coolant level in the radiator when engine is cold,make sure it is filled to top,next verify you have coolant in reserve ,Start your van and get it up to normal operation temperature,If your heat gauge on the dash works correctly it should be 190 degrees,Now lift the hood and locate the two heater hoses going into the heater assembly at the fire wall,Both hoses should be hot to hold on to,if both are hot and no heat inside your problem will be the blend air door in heater assembly.
if neither hose is that hot you need to replace the thermostat in the engine to get it up to 195 degrees.
if one hose is hot and one is luke warm then the heater core is blocked and to blame. hope this helps you.

You may have a clogged heater core, leaking heating cores still provide heat.