Question about 2000 BMW 3 Series

1 Answer

I have bmw 318ci and the hot air is not working, the heater is blowing and set to max heat but only blowing cold air, i have checked the fuse box, any ideas??

Posted by on

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
  • 395 Answers

The heater operates from the hot water from the engine cooling system flowing through the heater radiator which is inside the air ducts under the dash. I suspect that the control wire/cable that goes from the heater control lever has broken or become disconnected from the heater tap that controls the volume of hot water through the heater radiator. Some times there is also a flap in the air ducts that is operated by the heater lever tha varies the amount of air that is heated. The tap may be in the engine bay or tucked in behind the air ducting.

Posted on Aug 31, 2010

  • noelwalsh Sep 14, 2010

    A common problem with the BMW 3 series of the 99 - 2002 year is that when there is a leak in the cooling system for what ever reason ( perished hoses leak in the 3 series a lot ) air leaks in as tiny amounts of water leave. The air rises to the highest point which is the internal radiator in the models, 3 series of the pre-said years. As it fills with air over time the water pump can no longer pump the coolant through it ( A water pump will not move air in a car only water ) leaving the internal radiator empty , hence no heat. A temporary solution is to put in more water or coolant remembering to loosen the air release bleed screw when doing so. do it while the engine is running and the pump is rotating and make sure the heating in the car is on full tempeture so as to allow the water to flow up and into the internal radiator. leave the bleed screw beside the main engine radiator open for five minutes or so to be sure all the air has purged. After that tighten it and replace the filler cap and you should be good to go. if it does not fix the problem bring it to a garage to have the system pressure checked for leaks. they may also do a sniffer test to see if there is any combustion gases in there that should not be, this may indicate major machanical failure of the engine block head gasket or more common in the 2000 318 's is a cracked engine block head which needs total replacement.

    So remember! practice and enjoy :)

  • noelwalsh Sep 14, 2010

    A common problem with the BMW 3 series of the 99 - 2002 year is that when there is a leak in the cooling system for what ever reason ( perished hoses leak in the 3 series a lot ) air leaks in as tiny amounts of water leave. The air rises to the highest point which is the internal radiator in the models, 3 series of the pre-said years. As it fills with air over time the water pump can no longer pump the coolant through it ( A water pump will not move air in a car only water ) leaving the internal radiator empty , hence no heat. A temporary solution is to put in more water or coolant remembering to loosen the air release bleed screw when doing so. do it while the engine is running and the pump is rotating and make sure the heating in the car is on full tempeture so as to allow the water to flow up and into the internal radiator. leave the bleed screw beside the main engine radiator open for five minutes or so to be sure all the air has purged. After that tighten it and replace the filler cap and you should be good to go. if it does not fix the problem bring it to a garage to have the system pressure checked for leaks. they may also do a sniffer test to see if there is any combustion gases in there that should not be, this may indicate major machanical failure of the engine block head gasket or more common in the 2000 318 's is a cracked engine block head which needs total replacement.

    So remember! practice and enjoy :)

×

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 expert 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 repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Bmw defroster blows hot air/vents only blw cold air


These selections are run by Engine vacuum. sounds lie a diaphragm is NG to control the lower door

Jan 08, 2014 | BMW Cars & Trucks

1 Answer

No heat blower moter blowing cold air,temp on max 91, fluid is full fuses are fine car temp running good in the middle motor fan work on and off like its supossed to . i just cant figure it out and BMW...


ok the heater cor needs to bet hot, if not , no heat.
you can put hand on both tubes, of the core of any car.
do so, are the they both hot.
no, (the heater valve is closed or packed up, (no service? every 2 years)
yes then the heater, controls are bad, (bad controller or the damper flaps , motors (or cables, vacuum) controls are malfing.
lets do the flow (no pun)
1: hot engine, 180F holding or more.
2: fan blows
3: hot water flowing through the heater core....
4: dampers in the right position.
just 4 checks, find the one that fails in this order and the job
is less work, and to the real cause.

id didnt go to alldata.com to look at what type of controls you have.
we can, (so can you) if test 3 passes.
some cars have core valve , find yours and make sure it flows.
other cars there is no valve. and only the dampers block heat.







Nov 30, 2013 | 2001 BMW 325i

1 Answer

Heat and air conditioning does not work.


say what dont work.
ok the blower blows, and for sure on high.
so what do you want , and where.
heat to cab?
cold air conditioning to cab?
does not work, ok
lets do 1. no heat to cab,
blow fuse is 1st . check all fuse. (see glove box operators guide)
if no heat:
check engine heat, is it 180F and holding
check cap heater core hose, in heat mode are both hot. ?
if both are hot you have heat to the core and is a damper failure
in the heater box (or controller)


this car is a frankencar.
Honda Passport was a badge engineered version of the Isuzu Rodeo released in 1993 and sold by Honda in the United States

Nov 29, 2013 | 1997 Honda Passport

1 Answer

Bmw heater


i see answers to other questions here except the question asked about no heat in a 325 xi 2001 blower works great fluid is full no leaks,fuses are fine,get a lil heat while at a stand still but as soon as you drive cold air only temp on max 91, engine temp right in the middle takes about 8 mins for temp gauge to reach the middle can anyone help with this..PLEASE !!!!!!

Jan 09, 2013 | 2001 BMW 3 Series

1 Answer

2000 Jaguar S type 3.0 Blows only cold air on full heat. Just replaced heater control valve with no change. Also flushed and replaced thermostat. Car operating temperaure is fine. Both heater hoses are...


Check the little pump below the brake booster for running and the coolant valve for movement.

Both hoses to fire wall should be hot.

Check for air lock in system.

Blend doors on this vehicle stop working....common complaint.

To verify Blend door movement, turn on ignition with engine off.

Run temp to max and the min..... listen under glove box for ( sliding ) motor noise as door swings from hot to cold.

This is a digital system needing a Jaguar scanner for diagnosis.

Jan 16, 2011 | 2000 Jaguar S-Type

1 Answer

Heater not hot


does the heater core get hot, check the coolant hoses going to the core to see if both are hot, if they are U have a air temperature control blend door problem, most likely the actuator for the door has failed.

Dec 16, 2008 | 2001 BMW 325

2 Answers

Heater not working, cruise control not working


set temp to max 32degrees will turn on the a\c
2. check the fuse for cruise

Dec 11, 2008 | 2001 BMW 325

Not finding what you are looking for?
2000 BMW 3 Series Logo

Related Topics:

987 people viewed this question

Ask a Question

Usually answered in minutes!

Top BMW Experts

Frankie B

Level 2 Expert

65 Answers

Fred Sops

Level 2 Expert

272 Answers

Doberman

Level 2 Expert

254 Answers

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

Answer questions

Manuals & User Guides

Loading...