2001 Chevrolet Blazer Logo
Posted on Apr 05, 2011
Answered by a Fixya Expert

Trustworthy Expert Solutions

At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.

View Our Top Experts

Heater blowing cold air replaced thermastat next day heater blowed hot then it started blowing cold again has a new radiator and the water is not low

1 Answer

Ricky Peters

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.

  • Chevrolet Master 2,620 Answers
  • Posted on Apr 05, 2011
Ricky Peters
Chevrolet Master
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.

Joined: Jul 26, 2008
Answers
2620
Questions
1
Helped
730514
Points
7327

Flush coolant system out first with prestone or peak coolant flush if problem still exist replace heater core.

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

0helpful
1answer

Overheating

About the only thing left is the water pump.
0helpful
2answers

Car heater blowing hot air all time

your thermastat might be gummed up try remo
ving it and checking it should be located on radiator hose closest to motor or your control unit might be fried
0helpful
1answer

I have a 2003 alero with the v-6 what happened was driving down the road the heater works fine. then all of a sudden it was blowing cold air and the temp gauge started climbing. it started blowing how air...

Sounds like the water pump is cavitating . Replace water pump. Check coolant level also. Open the bleeder valve usually located on thermostat housing to remove air from system. close valve when coolant is present while filling. close radiator cap and top off recovery bottle to correct level. These engines are prone to overheating, do not let temp gauge get in the red.
0helpful
3answers
3helpful
2answers

I have a 2010 ford escape..prob started as a coolant leak..took it to ford dealer, they repl water pump..a week later we noticed when u stop a red lite heater starts blowing cold air..took back to...

The performance of the heater indicates low coolant level. Pretty strange about the multiple water pumps, but if is is under warranty, you need to keep going back to the dealer. They must be missing something...
0helpful
1answer

2001 Daewoo Nubria heater stopped working and is now overheating

CHECK COOLANT AGAIN IF IT GET LOW HEATER WILL STOP BLOWING HEAT.
0helpful
1answer

Engine overheats when heater pipes connected

I think you could be right about there being air trapped in the system.
Or the heater core(radiator) is plugged.
Either way you need a pressurized radiator coolant pump to put the coolant in without air being trapped.
Although,i have seen it done by jacking the vehicle up high enough that the radiator was now higher than the heater core level, and then the coolant was put in.
But this is dangerous to try.
0helpful
1answer

Air conditioning blows nothing but cold air. can't get heat.

IF U ARE TRYIN TO GET THE HEAT U CAN DO 3 THINGS
1. TURN HEATER ON THE FACE/FEET POSITION AND PLACE ON HIGH, TAKE THE RADIATOR CAP OFF AND CONTINUE TO POUR WATER/COOLANT UNTIL HEAT GETS HOT
2. CHECK/REPLACE THERMASTAT
3. CHECK/REPLACE HEATER CORE
0helpful
1answer

No heat just warm air

I think you are on top of your problem,,you dont need any one elses advice.
Complete rebuild of the cooling and heating system,, simple.
0helpful
1answer

1995 Nissan pathfinder over heating blowing cold air.

Sounds like either your thermostat, which is the least expensive and easiest thing to change, or your water pump, or clogged radiator, which is a whole new world! The reason it wont blow hot, is because you are not getting any water to the heater core. Hope this helps.
Not finding what you are looking for?

409 views

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

ZJ Limited
ZJ Limited

Level 3 Expert

17989 Answers

john h

Level 3 Expert

29494 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

15088 Answers

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

Answer questions

Manuals & User Guides

Loading...