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vents blowing hot air - TDIClub Forums
My 2000 golf tdi is blowing hot air out the vents even when the fan is 'off'.
When i turn on the fan it blows more hot air in the cold position and in the hot position.
The hot/cold lever seems normal and is not hanging or dragging when I turn it.
When i turn on the a.c.
It blows hot air.
Any ideas on what could be the problem?
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First thing I would do is check fuses After that I would try to figure out if the flap that regulates air temp moves.
Perhaps the actuator that moves it came unhooked or failed.
Do you have a Bentleys manual?
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No I don't have a Bentley's Guide.
Which fuse should I be looking for?
The fan?
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Here is a fuse listing.
MKIV FUSE LIST
1.
Washer nozzle heaters, glove compartment light, memory seat control module (10A).
2.
Turn signal lights (10A).
3.
Fog light relay, instrument panel light dimmer switch (5A).
4.
License plate light (5A).
5.
Comfort system, cruise control, Climatronic, A/C, heated seat control modules, automatic day/night interior mirror, control module for multi-function steering wheel, control unit in steering wheel (7.5A).
6.
Central locking system (5A).
7.
Back-up lights, speedometer vehicle speed sensor (VSS) (10A).
8.
Open
9. Anti-lock brake system (ABS) (5A).
10.
Engine control module (ECM): gasoline engine (10A);
Diesel engine, Model Year 2000 >
(5A).
11. Instrument cluster, shift lock solenoid (5A).
12.
Data Link Connector (DLC) power supply (7.5A).
13.
Brake tail lights (10A).
14.
Interior lights, central locking system (10A).
15.
Instrument cluster, transmission control module (TCM) (5A).
16.
A/C clutch, after-run coolant pump (10A).
17.
Open.
18. Headlight high beam, right (10A).
19.
Headlight high beam, left (10A).
20.
Headlight low beam, right (15A).
21.
Headlight low beam, left (15A).
22.
Parking lights right, side marker right (5A).
23.
Parking lights left, side marker left (5A).
24.
Windshield and rear window washer pump, windshield wiper motor (20A).
25.
Fresh air blower, Climatronic, A/C (25A).
26.
Rear window defogger (25A).
27.
Motor for rear windshield wiper (15A).
28.
Fuel pump (FP) (15A).
29.
Engine control module (ECM) gasoline engine (15A);
Diesel engine (10A).
30.
Power sunroof control module (20A).
31.
Transmission control module (TCM) (20A).
32.
Injectors: gasoline engine (10A);
Diesel engine (15A).
33.
Headlight washer system (20A).
34.
Engine control elements (10A).
35.
12 V power outlet (in luggage compartment) (30A).
36.
Fog lights (15A).
37.
Terminal (86S) on radio, Instrument cluster (10A).
38.
Central locking system (with power windows), luggage compartment light, remote/fuel tank door, motor to unlock rear lid (15A).
39.
Emergency flashers (15A).
40.
Dual tone horn (20A).
41.
Cigarette lighter (15A).
42.
Radio (25A).
43. Engine control elements (10A).
44.
Heated seats (15A).
Fuse arangements in fuse bracket/battery:
S162.
Glow plugs (coolant) (50A).
S163.
Fuel pump (FP) relay/glow plug relay (50A).
S164.
Coolant fan control (FC) control module/coolant fan (40A).
S176.
Relays panel interior (110A).
S177.
Generator (GEN) (90 Amp.) (110A).
Generator (GEN) (120 Amp.) (150A).
S178.
ABS (hydraulic pump) (30A).
S179.
ABS (30A).
S180. Coolant fan (30A).
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Check fuses 5,16,25 above the driver's footwell.
Check the center metal fuse, and the inboard plastic fuse above the battery.
Verify that when you start the car, and select AC and select a cabin fan speed, that the AC button lights up, BOTH radiator fans run, the cabin fan runs, and the clutch on the AC compressor latches.
(center part seen from standing out on the right side of the car turns.)
While I do some homework.
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Can you hear the temperature flap reach the ends of its travel?
If your complaint is "The air coming out of the duct is always very hot after the car warms up, much hotter than ambient air, no matter what temperature it is set on", then it sounds as if the cable has come loose from the temperature control flap.
Probably on the flap end of the cable, since you say the resistance is normal.
You need to verify the cable is still hooked up.
It is connected on the back of control knob and on the flap.
The adjustment is on the flap end.
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Or the bowden cable came out of its retaining clip.
Disassembly of the lower instrument panel trim is required.
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Or a mouse chewed through the foam in the blend doors and now you big holes showing.
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When my '02 NB TDI did this last fall, it was because a small part in the air blend door mechanism failed, leaving the hot air supply on at all times.
I was told I'd need a whole new heater assembly installed for about a grand, but another shop found a fresh TSB on the problem.
Nw VW is selling the failed widget for about $100, and the total repair cost me about $250.
It's working fine now.
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Taos...happend to me too and I found out the vent directional flap was broken.
I became very flexible in my body, removed the part and fixed it with JB Weld.
It cost a few pennies to fix.
Good luck!
btw...the hot-cold controller seemed fine and the cable was intact...only when I got deep down did I see the broken plastic piece.
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Quote: : Taos...happend to me too and I found out the vent directional flap was broken.
I became very flexible in my body, removed the part and fixed it with JB Weld.
It cost a few pennies to fix.
Good luck!
btw...the hot-cold controller seemed fine and the cable was intact...only when I got deep down did I see the broken plastic piece.
I just took all the trim out and found the same thing that you are talking about.
Did you have to take out the entire distribution assembly or did you repair it in place?
I can't get close enough yet to see how to repair it, but gave up when it got too dark to see.
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