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timmy_Tam
P Plater
23 Posts
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 Posted - 21 Jun 2006 : 12:05:21 PM
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hey guys, long time reader, first time question
car VN 91 calais
stock, auto
my heater was working fine one day, stuffed the next
basically, no matter what setting (at feet, at face, at windscreen) the air only blows out the feet, and more at the passenger side
wouldn't clear up my screen, and i had to wipe it by hand
any ideas?
i've checked fuses, but not sure how to check the big black ones?
please hlep!
thanks
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lolo
Fully Licenced
503 Posts
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Posted - 21 Jun 2006 : 8:27:45 PM
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| mate probly just had a huge buildup of junk that has cascaded into the main mouth that leads to all the vents, mine is still the same cos I cant be bothered cleaning the system and cant afford to get it done by someone else |
Marcus Rogulic R.I.P (1980-2007)
"The Good Die Young" |
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lolo
Fully Licenced
503 Posts
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Posted - 21 Jun 2006 : 8:29:26 PM
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| also does you air con blow cos if it is junk, your air con wont blow properly either |
Marcus Rogulic R.I.P (1980-2007)
"The Good Die Young" |
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mouce
National Driver
1525 Posts
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Posted - 21 Jun 2006 : 8:34:13 PM
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The vent control flaps are vacuum operated from the back of that little selector dial (well...it is in the exec, I'm not sure about climate control ones).
It would be worth checking the condition of the vac hoses that plug into the back of the selector. If one of the hoses has split they 'default' to pointing at the feet. You may have started to hear a bit of a hissing noise too, not always but it will be there somewhere.
Take the heater control panel out and check the vac hoses there, the vac block and the switch itself. |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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timmy_Tam
P Plater
23 Posts
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Posted - 23 Jun 2006 : 09:01:10 AM
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thanks guys
will take it it apart and see what turns up
so it isn't gonna be a quick fix, like say a blown fuse or relay? |
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mouce
National Driver
1525 Posts
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Posted - 23 Jun 2006 : 10:23:12 AM
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| If the fan wasn't blowing at all, then there is a chance that it would be a blown fuse, but since it is blowing, but only down at your feet, I'm going to say that it's at least a 1 beer job, probably 2 if you've never pulled the heater controls out before. Just take it slow, and you'll get it done okay, all you need is a phillips head screwdriver. |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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timmy_Tam
P Plater
23 Posts
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Posted - 13 Jul 2006 : 4:06:10 PM
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i finally get around to fixing the problem
and i'm still stumped
after wrestling with the dash, i find the VAC pipes
i think the problems with the heater unit, it doesn't 'suck' air to open the servos (or the pumps to the door flaps)
i'm sure it's not the pipes, because i open the flaps by hand, and put my finger over the tube opening which stops it from closing due to the vacumm.
can anyone please help?
i've taken the dash apart and don't want to put it on again and then take it off
here are some picts
[URL=http://imageshack.us] [/URL]
[URL=http://imageshack.us] [/URL] |
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mouce
National Driver
1525 Posts
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Posted - 13 Jul 2006 : 6:45:21 PM
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Damn...you did go the whole hog. Did you check the vac pipes at the heater control dial? Most of the time that's where the problem is. The vacuum isn't supplied by the heater unit, it's supplied by the engine. Have a look at the throttle body, on the back of that there is a little black tube, it runs towards the firewall, it eventually goes into a t-piece. One end then runs into the vac ball (big black ball in the front passenger wheel arch) the other runs into the cabin for the heater controls. I'm still going to say that it's probably one of these pipes is split or kinked. Check out the vac hoses.
If you're unsure what I'm on about, I'll try to get a few pics to you. |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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timmy_Tam
P Plater
23 Posts
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Posted - 13 Jul 2006 : 10:49:08 PM
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hi Mouce
yeh, i fully removed the entire dash, and i tell ya, that bolt at the top of the dash was a doozy!
i'm guessing i didn't have to remove the entire thing huh??
anyway, it's electronic control, so i dont have dials (damn)
i checked the throttle body, and theres only one tube that goes into a T piece, one end runs to firewall, but hte other routes into the wheel arch via the airbox and into nothing!
the the VAc ball, is that in front of the wheel or behind it in the arch?
i'm rEALLY STUMPED!
i've been told it oculd be the heater unit, but i think the vac might be more accurate
but i don't see a pipe or VAC anywhere!!
and yes pelase, picts would help!
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mouce
National Driver
1525 Posts
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Posted - 14 Jul 2006 : 10:12:05 AM
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First up PM sent.
Second...that black hose that goes in under the air box...that's the vac line. If you follow that through the panel, you should find that it's plugged into the vac ball (front of the passenger side wheel well). If it isn't then I think we've found your problem.
Also...as for pulling out the dash, no you probably didn't NEED to do it (best start with the simple things first) but it's a good experience, it means that you'd be a lot more comfortable doing stuff like this in the future. But for this...there's probably a more simple explanation for your problem. |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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timmy_Tam
P Plater
23 Posts
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