407 only blowing lukewarm air - Peugeot Forums
Peugeot Forums - Peueot - Citroen Community
Home :: Peugeot Forums :: Rules :: Articles :: About Us :: Partner Vendors :: Advertise


Go Back   Peugeot Forums > Peugeot Models > 407
PeugeotForums.com is the premier Peugeot All Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 08-12-13, 01:54 PM   #1
Inactive User
 
Join Date: Dec 2013
Posts: 5
Default 407 only blowing lukewarm air

hello

I dunno if this is the same problem as the heater flap problem, my 1.6 hdi only blows lukewarm air out off all the vents, the pipes under the passanger footwell are boiling hot but why is this hot air not getting into cabin. the direction of air etc can be changed but even at max its still lukewarm.

is this the flap issue

its a dual system
pug407ire is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 08-12-13, 02:15 PM   #2
Inactive User
 
Join Date: Oct 2013
Location: Brundall (near Norwich)
Posts: 149
Default

Think I would first check if the motors that move the flaps are moving when you adjust the temp from cold/hot. While the motors are off I would move the flaps manually to see if you can get hot air coming out.

The vent on top of the dash can be removed to get a view of the flaps.

I have experienced with previous cars that even though the pipes are hot the heat exchanger may be partially blocked and although water is circulating it is not getting the heat exchanger as hot as it should be.
Richard111 is offline   Reply With Quote Quick reply to this message
Old 08-12-13, 02:26 PM   #3
CAB
Guest
 
Posts: n/a
Default

You had anything done to cooling system?

Have you checked cabin filter? they are known to get blocked on 407 and restrict airflow.



Peugeot Planet owner, Doncaster
  Reply With Quote Quick reply to this message
 
Old 08-12-13, 03:42 PM   #4
Inactive User
 
Join Date: Dec 2013
Posts: 5
Default

done nothing to the system

oh even tho the pipes are boiling hot could the cabin filter stop the hot air, the air speed is fine just cold

one thing I did notice is that the air intake pipe ujder the bonnet is loose but I dont see how this would affect temperature

could he thermostst have a say in this
pug407ire is offline   Reply With Quote Quick reply to this message
Old 08-12-13, 03:45 PM   #5
Inactive User
 
Join Date: Dec 2013
Posts: 5
Default

Quote:
Originally Posted by Richard111 View Post
Think I would first check if the motors that move the flaps are moving when you adjust the temp from cold/hot. While the motors are off I would move the flaps manually to see if you can get hot air coming out.

The vent on top of the dash can be removed to get a view of the flaps.

I have experienced with previous cars that even though the pipes are hot the heat exchanger may be partially blocked and although water is circulating it is not getting the heat exchanger as hot as it should be.
sorry are these the motors hat you remove in the footwells

also can you flush out the heat exchange system
pug407ire is offline   Reply With Quote Quick reply to this message
Old 08-12-13, 03:54 PM   #6
Inactive User
 
Join Date: Oct 2013
Location: Brundall (near Norwich)
Posts: 149
Default

Yes the motors are the ones accessed from the footwells.

If you are getting plenty of air then I would say one of two things, either the air has not been directed through the heat exchanger or the heat exchanger is not hot enough.

Easy first check is take off motors and move flaps manually.

You could flush the heat exchanger, I have done them in situ before on other cars you need to connect some hoses to the heat exchanger pipes somewhere. I then filled a bucket with descaler(well some mega strong acid I acquired, but descaler is worth trying), I then used a small pump to suck the descaler out of the bucket through heat exchanger and back to bucket, leave it running for a couple of hours, reverse pipes etc. then flush with clean water and reconnect to car.

Another possibility is you might have an air lock in the heat exchanger, I had a diesel escort a few years back which was mainly used by my ex girlfriend who constantly complained about the heater not being very good. I spent a whole weekend messing around with it and after running out of ideas, I filled the header tank to overflowing, replaced the cap and drove it in 2nd gear with throttle to the floor for a few miles. As if by magic the heater was fixed and the water level had gone down considerably. It must of had an air lock somewhere. Refilled the header tank to correct level and it was fine from then on.
Richard111 is offline   Reply With Quote Quick reply to this message
Old 08-12-13, 04:29 PM   #7
Senior Member
 
Join Date: Jul 2013
Location: surrey
Posts: 240
Default

barr's leak sealer or similar can be responsible for just this sort of outcome ...
ie fix the leak +block the heater matrix....! GREAT
just a thought..
neil
NeilH is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Peugeot Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT. The time now is 11:02 PM.



Powered by vBulletin® Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.