Mitsubishi Delica Owners Club UK™

pitbull2001 · Posted: Sun May 15, 2005 0:58 Post subject: Hot air saga, the mystery deepens!!

okay constant hot air thru the vents no stopping it no matter wat setting its put on...climate control model...fresh air vents are only ones producing cold air even on 17 degrees on a hot day imm still get blasted with hot air,,,ThoughtS????Heater matrix? flaps? or something like internal temp sensor gone duff?
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ACE DELI · Posted: Sun May 15, 2005 14:55 Post subject:

Hi Pitbull

If you are having hot air through your vents with the temp set low then it implies that the heating matrix is okay because the hot water going through the matrix will heat up the air. I would think that one of your temp sensors is giving an incorrect reading and saying its colder than it actually is, so its trying to warm it up - or - the water valve is stuck in the open position and not responding to instructions to close and cut off the hot water to the heater. With your temp set to 17c your air con would be running and cooling down the air before it gets to the heater therefore there is also a possibility that your aircon isn't working. To check this switch your rear heating on and set it as low as poss with the air con on and see what happens, (obviously all the above with the engine running to run the air con compressor Laughing

). If you get cold air in the back then your air con is working. HTH

Cheers

David
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ChrisnElaine · Posted: Sun May 15, 2005 15:01 Post subject:

Hi

I had the same problem! there was a lose cable behind the glove box try there to see if any of the wires have come off.

Chris

pitbull2001 · Posted: Sun May 15, 2005 17:51 Post subject:

Thanks for ur suggestions guys.....ill have a look at the glove box thing tommorow....do i need to take the glove box out...which side??...and what kind of connection was it if u know???

as far as i can tell the air con compressor is working fine had it looked over by a mechanic who works on air con b4 i bought it and alls well there with the compressor...also imm guessing if it was just the air con unit then i wouldn't get ice cold air but at same time i shouldnt get boiling hot air either thru the vents either......I thought it might not be the heater matrix cus with that u normally get the opposite happening with not enough warm air. WIll try a few things tommorow..Cheers!
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pitbull2001 · Posted: Sun May 15, 2005 17:59 Post subject:

Also another thing guys...this cud be related to the whole thing...the middle fresh air vent things (cold air only ones) on the drivers side is stuck completley jammed like something stuck in the mechanism...i.e. the turn control knob thingy to open and clsoe the air off won't budge and inch...u think this cud be related to the whole warm air thing perhaps?...Do i need to take me dash off? :?
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IanFJ · Joined: 21 Apr 2004 Posts: 816 Location: Bristol (Nailsea)

Pitbull, the arm operating the position of the flaps inside the vent can become dislodged causing the type of problem you have. If you remove the panel around the speedo it can be got at that way. On mine it just need clicking back into place and was fine.

IanJ
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pitbull2001 · Posted: Sun May 15, 2005 18:05 Post subject:

okay cheers for that...wud that cause the warm air too u think or just block the cold air on that one vent? And how do i go abouts removng the speedo panel...if i can find out where to start undoing bits and bobs am sure i can egt the rest from there...Thanks!
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ACE DELI · Posted: Sun May 15, 2005 20:27 Post subject:

Hi

Pitbull wrote

splerges1 · Posted: Sun May 15, 2005 21:35 Post subject:

hi all, don't mean to hijack your topic, but i got same problem aswell, drove home from skegness today roasting away with only back aircon on kids fine n cool, but I'm roasting to death, my hot is super hot and can only get coolish through left fresh air vent, i need help soon before HOT weather comes (if it ever does!!!), I've got climate control set to 17 deg. full strength and just heat!!! angry4

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pitbull2001 · Posted: Mon May 16, 2005 14:38 Post subject:

exactly same symptoms as mine mate... having a fiddle this afternoon altho aint got time to take dash off for 2 weeks...if i find anything ill let u know...likewise if u got any ideas pass them on this way.

So far imm going on the grounds of a flap stuck open or the hot air control valve stuck ...all i have to do now is locate them!
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pitbull2001 · Posted: Mon May 16, 2005 23:00 Post subject:

okay this is gettin weirder by the second.....First off today i got the fresh air vent on druvers side that was stuc fixed...Just had to take speedo dash bit off a bit then replace and it was fine....This made no change to the problem as expected Then with engine ticking over i checked the air con and climate control in the back....Had ice cold air straight away...i then checked underneath the bonnet thru the glass of the air con thingy and loads of bubbles to and i could hear the compressor running fine.

I then tried the front air con on with all the different settings...Checked underneath the bonnet and guess what....no bubbles showing atall! Listened to compressor...and it ran for a min then cut out for a bit then started up again (same compressor as is used for the rear by the way) located underside of the side step to sliding door, it just kept running for like 30 seconds then cutting out again....but works fine on the rear with plenty of cold air and no cutting out......This has now got me completley stumped.......has anyone seen this b4? is it a duff temp sensor or something far more evil? By the way anyone know where the drivers can inner temp sensor is located..i looked underneath steering column to no avail.
Evil or Very Mad

By the way the dual air con Deli works off only one compressor as far as i can see and not 2 separate compressors as implied by some other people....hope imm not wrong in saying that!
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billy bob · Posted: Mon May 16, 2005 23:16 Post subject:

not sure and no doubt if I'm wrong someone will tell you soon there is a small grill by the heater controls there is a rubber tube on the back going to a small box when i did my heater back lights this was full of fluff just a guess but could this be the sensor and dust causing the proublem best of luck

andy
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bulldoggy · Joined: 29 Apr 2004 Posts: 395 Location: derbyshire

I'm assuming that the valve to the heater matrix hasn't stuck open as when mine did I got cold air from one vent but hot from all the others happened on the hottest day of last year. Might be worth having a look even though it means taking the top of the dash off

good luck !!!!

pitbull2001 · Posted: Tue May 17, 2005 19:46 Post subject:

cud be....just checked.....I have hot air thru all but one vents,,...the only vent that iv got cold thru on the front is passenger fresh air vent..sound familiar? If so how did u go about sorting it?
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bulldoggy · Joined: 29 Apr 2004 Posts: 395 Location: derbyshire

Sounds like mine. I didn't fix it the dealer did. The valve that lets water into the matrix was stuck open. They took ip top off and operatedv the valve by hand and greased it up.Bin fine ever since.

pitbull2001 · Posted: Wed May 18, 2005 19:03 Post subject:

Hmmm sounds like i may have to delve deeper into the dash when i get the time in next few weeks. Still not to sure as to why the compressor shud be cutting in and out though with no bubbles forming in the cylinder while the front air con is operating. Its def not the compressor though imm sure. Cheers for the hints!
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Oldskool Beat · Posted: Wed May 18, 2005 23:19 Post subject:

One way of checking if it's a sensor or dampers etc. and if you've got climate control is that.....
If you drop the temp right down and the sensor has picked up heat in the cab area it should automatically blow out cool/cold air at your face.
If it's still blowing at your feet the pickup sensor must be duff and still calling for heat. :?
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Just trying to help ;)
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pitbull2001 · Posted: Wed May 18, 2005 23:23 Post subject:

CHeers beat what setting do i need to put it on for it to do that.. Every setting iv tried so far just gives me hot air apart from the one fresh air vent on the passenger side...Imm totally confused by the whole situation..But its obvious that compressor and air con is gassed up enough as the back is fine with ice cold air. :?
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Oldskool Beat · Posted: Wed May 18, 2005 23:34 Post subject:

Even with the air con off and in auto at low temp it should still feel cool in this weather.
If you set the temp at 17oC in auto the dampers should change about and just blow at your face.
When turning the temp up the dampers should change from face to feet area.

As for the aircon, you may sometimes see bubbles in the system when its cutting in and out, when the system is running constant the bubbles should disappear Wink

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I will not be held responsible for any loss of limbs or any other damage to Deli' or persons.
I am in no way a mechanic or auto electrician.
Just trying to help ;)
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pitbull2001 · Posted: Wed May 18, 2005 23:38 Post subject:

not sure what dampers are?lol....forgive my ignorence....EVen with aircon off its blows hot air thru nearly every vent bar passenger fresh air vent...with aircon on it does the same.....i think must be a valve stuck open somewere...awwwww...i dunno anymore arghhhhhhhhh.....Like fook am i takin it to a air con specialist..lol Evil or Very Mad

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