Topic: Non working climate control (Read 4187 times)

stuart30 · « **on:** 25 July 2006, 19:35:33 »

Ive done a search but really didn't answer my questions so bare with me......

My climate control in my current car (97 Elite) doesn't work...hasn't since ive bought it,and with the current heat wave im getting warm....DAMN warm,so any thoughts would be welcome.

The climate lights up as expected..temp..Fan number ect,but regardless of the temp setting its on it neither gets warm nor cold and there's no air being blown through,just appears to be completely dead.

So really any advice (idiot terms please.lol.) on where and what to check first and possible solutions would be smashing.

tunnie · « **Reply #1 on:** 25 July 2006, 19:38:48 »

well since nothing works, then thats good and bad news.

My system failed month or so back, blew hot air and cool but no air-con. Turned out to be my condensor which was duff.

Because nothing atall is comming out off yours, suggests either:

1) Vacume problem - Check all hoses ect... any air going out of the back vents? (arm rest ones in the back)

2) Heater Matrix Nakered

Sounds to me more like vacume as you have no air at all....

stuart30 · « **Reply #2 on:** 25 July 2006, 19:49:35 »

Quote

well since nothing works, then thats good and bad news.

My system failed month or so back, blew hot air and cool but no air-con. Turned out to be my condensor which was duff.

Because nothing atall is comming out off yours, suggests either:

1) Vacume problem - Check all hoses ect... any air going out of the back vents? (arm rest ones in the back)

2) Heater Matrix Nakered

Sounds to me more like vacume as you have no air at all....

No the rear vents are the same...nothing at all.

Forgot to say that ive tried resetting the climate with the auto and off buttons both held down for 30 seconds and theres a quiet clicking noise,not sure if thats good or bad.?

Taxi_Driver · « **Reply #3 on:** 25 July 2006, 19:49:38 »

As theres no air being blown and I assuming theres no fan noise even if you have the fan set to max

I would think.....cheapest option 1st

Fuse blown for the fan
Fan has died
ECU for climate is knackered

I would have said check pollen filter......but it sounds like you have no air being blown at all so counted this out.

HTH

Salty · « **Reply #4 on:** 25 July 2006, 19:53:19 »

yes check the basics first, fuses etc

tunnie · « **Reply #5 on:** 25 July 2006, 19:55:25 »

Re-reading your post it seams you get a digital readout on the display? says 20 / 19 ect...?

If so its as TD says either the Fan or the ECU

Get a pair of long nose plyers and check every single fuse to see if its gone.

stuart30 · « **Reply #6 on:** 25 July 2006, 20:06:03 »

Cheers Guys fuses i can cope with..

If the fan or climate in the ecu has failed would a tech 2 machine pick this up...or even the paper clip test.?

And yeah the display is fine...can see the temp (16-25) and fan blower numbers all ok.

TheBoy · « **Reply #7 on:** 25 July 2006, 20:07:59 »

A tech2 live data view and actuation may help isolate the fault, but not tell you whats wrong.

Paperclip test only does engine ecu

stuart30 · « **Reply #8 on:** 25 July 2006, 20:23:09 »

Thanks for the help so far guys....so after i check all fuses,assuming there all ok what would be the next step.?

Taxi_Driver · « **Reply #9 on:** 25 July 2006, 20:48:34 »

Get the fan out....i dont think its a dash out job....i think its behind the centre console and can be got to......others will be able to advise.

Then just test it really....put 12v on it (or multimeter to test the motor winding resistance), making sure you know the correct pins.....if you can make it spin then its ok.

Then you looking at either a wiring fault (broken wire/bad connection/etc) or worst case the climate control panel is faulty (climate ecu).....ie its not sending 12v to the fan for it to work

HTH

TheBoy · « **Reply #10 on:** 25 July 2006, 20:56:05 »

If your scuttle drain hole has been blocked, its likely that the fan controller has got wet, and blown...

Taxi_Driver · « **Reply #11 on:** 25 July 2006, 22:29:46 »

Quote

If your scuttle drain hole has been blocked, its likely that the fan controller has got wet, and blown...

Good point TheBoy

...id forgotten that issue

..it may have happened b4 you got the car....as you said its never worked.
I believe the fan controller is attached to the fan housing.....so its still out fan job...i believe....to check

Omega VT3000 · « **Reply #12 on:** 26 July 2006, 08:12:47 »

My pre-facelift has an issue with the ECC controller. They seem to be fairly fragile. I either got hot or cold and nothing in between. A replacement controller shouldn't be mega money from a breakers.

Marks DTM Calib · « **Reply #13 on:** 26 July 2006, 08:47:23 »

I suspect fan speed control failure but, check the fuses first.....

Matchless · « **Reply #14 on:** 26 July 2006, 09:42:21 »

The blower hides behind the glove box, the speed controller is on a 2" x 2" plastic base which clips into the blower case.

Get the glove box out then check for power on the big red ? feed. The blower motors can seize which would blow the fuse or could blow the speed controller, you might be able to see the fan blades from the pollen filter or touch them through the speed controller hole (once removed) try turning the fan by hand to see if it is stiff or seized.
Water into the speed controller usually means fan running at full speed or wont turn off.

stuart30 · « **Reply #15 on:** 26 July 2006, 15:53:52 »

Hmm maybe this will shed some light on things.....

Just took the car through the car wash and my passanger front foot carpet well is abousolutely soaking....ive scooped maybe two pints of water out

First thought was maybe ive got a dirty great big hole in the floor,however its just passed its MOT with flying colours so doubt thats the case,ive had a look at the window screen and therubber edging that seals the screen is loose...is it possible that water has been getting in there and running down the back of the dash.

Im now off out to have a look at this drain hole...see if thats blocked,Fingers crossed i can find it..lol

TheBoy · « **Reply #16 on:** 26 July 2006, 15:56:36 »

Look below the pollen filter - is that full of water? If so, drain is blocked, and all that water will end up on fan and controller...

Marks DTM Calib · « **Reply #17 on:** 26 July 2006, 15:59:37 »

Yeh, drain hole blocked.......and will be the route cause of the ECC failure I suspect.

The plastic windscreen edging into which the rubber surround clips is often loose, the only time its not is of the windscreen fitter has gone mad with the mastic!. You often havve to replace this when changing the screen.

stuart30 · « **Reply #18 on:** 26 July 2006, 16:38:25 »

Right bare with me im getting excited (First time ive ever actualy got my hands dirty

)

Ok ive had a look under the pollen filter and scooped to one side about a mug fuel of oily dirt out of i assume the drainage hole....ive uncoverd what looks like a silvery gauze thing (looks like its meant to be there ?

Tried to Look under car to find the drainage hole but buggerd if i can find it....How far under is it and does car have to be jacked up (drive is on a slight slope and only have standard jack).

Pollen filter was a light grey colour and looks to me to be filthy...so once this drain hole is sorted will be replacing it.

Oh ive only lifted the flap where the pollen filter is so restricted space....not sure if that makes any difference.

TheBoy · « **Reply #19 on:** 26 July 2006, 16:44:14 »

if its prefacelift, drain exit is via a rubber tube into wheelarch - you should see the rubber slit with steering on full right lock

Marks DTM Calib · « **Reply #20 on:** 26 July 2006, 16:46:40 »

Its much easier to remove the rubber sealing strip along the front edge, ease back the lower rubber strip on base of the windscreen, turn the securing screws holding the cover 90deg and remove the left hand end of the cover.

Easier to get in there then and rod it through....what year is it?

stuart30 · « **Reply #21 on:** 26 July 2006, 16:58:52 »

I"ll run out side now before work and try both methords....just one thing should the hole at the top (bewlow pollen filter) have a silvery gauze on top of the hole.

Or should it be free flowing all the way to the wheel arch.?

Marks DTM Calib · « **Reply #22 on:** 26 July 2006, 17:05:00 »

Its should be free flowing......

stuart30 · « **Reply #23 on:** 26 July 2006, 18:33:12 »

Forgot to say the car is a 1997....
Pics below is that the drain hole...yes thats thick greasy sticky dirt covering everything in the pictures.

Ok so look under wheel arch...cant see anything that looks like a drain hole...did see a tiny little hole but that looked more like a nipple,that was slighty towards the rear of the wheel arch.

I thought this would be a nice simple little job to start with........ :-/

Taxi_Driver · « **Reply #24 on:** 26 July 2006, 19:55:36 »

If thats a pic of the pollen filter area.....its looks like your got summat growing in there :-?
It dont look nothing like mine....but mine is a facelift

Soz dont really help....but ive never seen anything like that on mine

stuart30 · « **Reply #25 on:** 26 July 2006, 20:27:44 »

Quote

If thats a pic of the pollen filter area.....its looks like your got summat growing in there :-?
It dont look nothing like mine....but mine is a facelift

Soz dont really help....but ive never seen anything like that on mine

Yeah that pollen fit area...the black line in first pic is the edge of the pollen filter.

Theres so much dirt in there i could grow spuds....

TheBoy · « **Reply #26 on:** 27 July 2006, 18:34:38 »

tip a mug of water down there (avoid pollen filter and cables if you can!) - you see the drain exit near about halfway up the strut...

stuart30 · « **Reply #27 on:** 27 July 2006, 18:41:03 »

Quote

tip a mug of water down there (avoid pollen filter and cables if you can!) - you see the drain exit near about halfway up the strut...

Right large cup of water chucked in and it came straight outunder the front wheel.

So if thats free flowing is it possible that the fan has got wet and stopped working or is another reason more likely.?

TheBoy · « **Reply #28 on:** 27 July 2006, 18:48:38 »

the rubber hole at bottom? thats the drain, and it goes to just behind the nsf wheel

stuart30 · « **Reply #29 on:** 27 July 2006, 21:07:31 »

Right drian hole must be clear as water gushed out as soon as i chucked it in...although it came out some where under the engine.?

So if thats clear any other thoughts on what to next check.?

TheBoy · « **Reply #30 on:** 27 July 2006, 21:09:14 »

thats not to say it wasn't once blocked, esp if the amount of dirt you make in there...

stuart30 · « **Reply #31 on:** 27 July 2006, 21:37:08 »

Quote

thats not to say it wasn't once blocked, esp if the amount of dirt you make in there...

Of course...should have relised that.

Well fuses all look ok (assuming there all located below steering wheel) so a trip to local garage is needed to get the fan checked as suggested.

Matchless · « **Reply #32 on:** 28 July 2006, 00:27:01 »

The drain exits in the ns wheel arch up to '97.
'98 on exits onto the chassis rail in the engine bay. (designed to help it rust?)

Have you been able to check if the fan is free to turn?
When water gets into the speed controller it sets up corrosion around the gate drive to the power FETs so the fan tends to be permanently on but it could affect the circuit in many ways.

If the fan is free then look for another controller from a scrapper...must have climate, not manual controls. If the fan feels tight go for the whole fan assy, its likely that the motor shaft is rusted and would be noisy even if you freed it off.

stuart30 · « **Reply #33 on:** 28 July 2006, 02:47:27 »

Quote

The drain exits in the ns wheel arch up to '97.
'98 on exits onto the chassis rail in the engine bay. (designed to help it rust?)

Have you been able to check if the fan is free to turn?
When water gets into the speed controller it sets up corrosion around the gate drive to the power FETs so the fan tends to be permanently on but it could affect the circuit in many ways.

If the fan is free then look for another controller from a scrapper...must have climate, not manual controls. If the fan feels tight go for the whole fan assy, its likely that the motor shaft is rusted and would be noisy even if you freed it off.

Ahh glad to know its coming out where it should be (chassis rail)...

Im gonna have to pop down local garage and get the MOT guy to have a butchers....the fan is accesed when the glove box is removed,is that correct.?

If so i"ll pull it out and let him have a fiddle....i"ll point out what you guys have said so fingers crossed.

Elite Pete · « **Reply #34 on:** 28 July 2006, 09:33:14 »

[/quote]If so i"ll pull it out and let him have a fiddle....
[/quote] [smiley=shocked.gif] [smiley=laugh.gif]

Wish my local garage were so accommodating. LOL

stuart30 · « **Reply #35 on:** 28 July 2006, 15:03:51 »

Quote

If so i"ll pull it out and let him have a fiddle....
[/quote] [smiley=shocked.gif] [smiley=laugh.gif]

Wish my local garage were so accommodating. LOL

[/quote]

Yeah you got me there.

PhilCavSRi130 · « **Reply #36 on:** 13 August 2006, 21:22:52 »

Quote

My pre-facelift has an issue with the ECC controller. They seem to be fairly fragile. I either got hot or cold and nothing in between. A replacement controller shouldn't be mega money from a breakers.

Mine does this but ive narrowed it down to the stereo interferring with the temp sensor. Heat from the headunit rises and then gives the sensor an inaccurate reading of the interior temp. Narrowed it down to this after leaving the stereo off and it was working fine.

Not the best position for a temp sensor, directly above a piece of equipment that builds up a lot of heat

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Author Topic: Non working climate control (Read 4187 times)

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