Z4-forum.com

Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.

All air vents blowing lukewarm air

Post Reply
Digidick
Member
Member
Posts: 254
Joined: Mon Sep 11, 2017 11:50 am

All air vents blowing lukewarm air

Post by Digidick » Sun Jan 15, 2023 9:17 pm

Recent purchase and my first issue.

Engine temp fine, water pipes coming to and from the
firewall are nice and hot but at best with temp set to max I can only get lukewarm air from the vents.

I’m new to this E89 lark so not sure what to check first.
Current Z4 - 2007 E85 3.0Si

Daily Motor - 2013 Audi A7 BiTDi
Top
Pondrew
Lifer
Lifer
Posts: 8471
Joined: Wed Jan 20, 2021 7:20 pm
Location: Spaldingski

All air vents blowing lukewarm air

Post by Pondrew » Sun Jan 15, 2023 10:49 pm

Check the little red/blue roller switch in the centre of the air vents on the dash is set to red (unless a you have a povvy spec 18i which doesn't have one). :thumbsup:
All good things come to those who wait. I'm really impatient which explains a lot.

F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
Top
User avatar
B21
Lifer
Lifer
Posts: 5411
Joined: Tue Oct 05, 2021 7:15 pm
Location: In my Banana Yellow Space Shuttle...somewhere over Southern Caledonia

All air vents blowing lukewarm air

Post by B21 » Sun Jan 15, 2023 10:55 pm

Could be the heater / blender unit going bad….

One failed on one of my cars ( a day after I sold it)…had the opposite issue, very hot air come what may..
We choose to go to on with this endeavour at this time and do the other things, not because they are easy, but because they are hard…
A very modified Atacama Yellow 35is :thumbsup:
Top
Digidick
Member
Member
Posts: 254
Joined: Mon Sep 11, 2017 11:50 am

All air vents blowing lukewarm air

Post by Digidick » Sun Jan 15, 2023 11:00 pm

B21 wrote: ↑Sun Jan 15, 2023 10:55 pm Could be the heater / blender unit going bad….

One failed on one of my cars ( a day after I sold it)…had the opposite issue, very hot air come what may..
Bet it’s not an easy fix is it?
Current Z4 - 2007 E85 3.0Si

Daily Motor - 2013 Audi A7 BiTDi
Top
Digidick
Member
Member
Posts: 254
Joined: Mon Sep 11, 2017 11:50 am

All air vents blowing lukewarm air

Post by Digidick » Sun Jan 15, 2023 11:12 pm

Pondrew wrote: ↑Sun Jan 15, 2023 10:49 pm Check the little red/blue roller switch in the centre of the air vents on the dash is set to red (unless a you have a povvy spec 18i which doesn't have one). :thumbsup:
Please! I’m new to E89’s but been around BMWs for years :rofl:
Current Z4 - 2007 E85 3.0Si

Daily Motor - 2013 Audi A7 BiTDi
Top
User avatar
B21
Lifer
Lifer
Posts: 5411
Joined: Tue Oct 05, 2021 7:15 pm
Location: In my Banana Yellow Space Shuttle...somewhere over Southern Caledonia

All air vents blowing lukewarm air

Post by B21 » Sun Jan 15, 2023 11:17 pm

Digidick wrote: ↑Sun Jan 15, 2023 11:12 pm
Pondrew wrote: ↑Sun Jan 15, 2023 10:49 pm Check the little red/blue roller switch in the centre of the air vents on the dash is set to red (unless a you have a povvy spec 18i which doesn't have one). :thumbsup:
Please! I’m new to E89’s but been around BMWs for years :rofl:
Yes but Pondrew hasn’t… :poke: :rofl:
We choose to go to on with this endeavour at this time and do the other things, not because they are easy, but because they are hard…
A very modified Atacama Yellow 35is :thumbsup:
Top
User avatar
B21
Lifer
Lifer
Posts: 5411
Joined: Tue Oct 05, 2021 7:15 pm
Location: In my Banana Yellow Space Shuttle...somewhere over Southern Caledonia

All air vents blowing lukewarm air

Post by B21 » Sun Jan 15, 2023 11:19 pm

Digidick wrote: ↑Sun Jan 15, 2023 11:00 pm
B21 wrote: ↑Sun Jan 15, 2023 10:55 pm Could be the heater / blender unit going bad….

One failed on one of my cars ( a day after I sold it)…had the opposite issue, very hot air come what may..
Bet it’s not an easy fix is it?
Sadly no…usually a decent code reader diagnoses will show related error codes..

On the E89 you really need a decent code reader as many / most issues need an ECU / sensor / module diagnosis
We choose to go to on with this endeavour at this time and do the other things, not because they are easy, but because they are hard…
A very modified Atacama Yellow 35is :thumbsup:
Top
Pondrew
Lifer
Lifer
Posts: 8471
Joined: Wed Jan 20, 2021 7:20 pm
Location: Spaldingski

All air vents blowing lukewarm air

Post by Pondrew » Sun Jan 15, 2023 11:24 pm

Digidick wrote: ↑Sun Jan 15, 2023 11:12 pm
Pondrew wrote: ↑Sun Jan 15, 2023 10:49 pm Check the little red/blue roller switch in the centre of the air vents on the dash is set to red (unless a you have a povvy spec 18i which doesn't have one). :thumbsup:
Please! I’m new to E89’s but been around BMWs for years :rofl:
In that case you should know the answer! :thumbsup:
All good things come to those who wait. I'm really impatient which explains a lot.

F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
Top
Digidick
Member
Member
Posts: 254
Joined: Mon Sep 11, 2017 11:50 am

All air vents blowing lukewarm air

Post by Digidick » Sun Jan 15, 2023 11:26 pm

B21 wrote: ↑Sun Jan 15, 2023 11:19 pm
Digidick wrote: ↑Sun Jan 15, 2023 11:00 pm
B21 wrote: ↑Sun Jan 15, 2023 10:55 pm Could be the heater / blender unit going bad….

One failed on one of my cars ( a day after I sold it)…had the opposite issue, very hot air come what may..
Bet it’s not an easy fix is it?
Sadly no…usually a decent code reader diagnoses will show related error codes..

On the E89 you really need a decent code reader as many / most issues need an ECU / sensor / module diagnosis
Only used BimmerLink so far and no faults.
Current Z4 - 2007 E85 3.0Si

Daily Motor - 2013 Audi A7 BiTDi
Top
Digidick
Member
Member
Posts: 254
Joined: Mon Sep 11, 2017 11:50 am

All air vents blowing lukewarm air

Post by Digidick » Sun Jan 15, 2023 11:36 pm

just read my post/question again

To make it clear I have cold air as well just not enough heat when I’m the higher temp settings.
Current Z4 - 2007 E85 3.0Si

Daily Motor - 2013 Audi A7 BiTDi
Top
User avatar
B21
Lifer
Lifer
Posts: 5411
Joined: Tue Oct 05, 2021 7:15 pm
Location: In my Banana Yellow Space Shuttle...somewhere over Southern Caledonia

All air vents blowing lukewarm air

Post by B21 » Sun Jan 15, 2023 11:50 pm

Digidick wrote: ↑Sun Jan 15, 2023 11:36 pm just read my post/question again

To make it clear I have cold air as well just not enough heat when I’m the higher temp settings.
It’s a very complex system given it appears to have some simple controls..

Not sure if bimmerlink would cut it…

If an ISTA / Protool class decoder shows no errors then I’m out of ideas..
We choose to go to on with this endeavour at this time and do the other things, not because they are easy, but because they are hard…
A very modified Atacama Yellow 35is :thumbsup:
Top
Digidick
Member
Member
Posts: 254
Joined: Mon Sep 11, 2017 11:50 am

All air vents blowing lukewarm air

Post by Digidick » Mon Jan 16, 2023 12:01 am

I do have a copy of ISTA somewhere, I’ll try and fire it up.

Thank you.
Current Z4 - 2007 E85 3.0Si

Daily Motor - 2013 Audi A7 BiTDi
Top
User avatar
B21
Lifer
Lifer
Posts: 5411
Joined: Tue Oct 05, 2021 7:15 pm
Location: In my Banana Yellow Space Shuttle...somewhere over Southern Caledonia

All air vents blowing lukewarm air

Post by B21 » Mon Jan 16, 2023 12:14 am

Digidick wrote: ↑Mon Jan 16, 2023 12:01 am I do have a copy of ISTA somewhere, I’ll try and fire it up.

Thank you.
Go for it :thumbsup:
We choose to go to on with this endeavour at this time and do the other things, not because they are easy, but because they are hard…
A very modified Atacama Yellow 35is :thumbsup:
Top
Busterboo
Senior Member
Senior Member
Posts: 2811
Joined: Sun Nov 20, 2016 2:49 am

All air vents blowing lukewarm air

Post by Busterboo » Fri Jan 20, 2023 10:53 am

Digidick wrote: ↑Sun Jan 15, 2023 9:17 pm Engine temp fine, water pipes coming to and from the
firewall are nice and hot ...
Nevertheless, check engine coolant level. Engine cold, coolant cap off, is prong floating high?
Vidi, vici, veni
Top
Busterboo
Senior Member
Senior Member
Posts: 2811
Joined: Sun Nov 20, 2016 2:49 am

All air vents blowing lukewarm air

Post by Busterboo » Fri Jan 20, 2023 10:59 am

Oh, good! TEN more photos of YELLOW cars. :crapparking:
Vidi, vici, veni
Top
Post Reply

Return to “E89 problems”