Author Topic: Heater only blows out cold air.  (Read 7507 times)

Offline D1andonlyantman

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Re: Heater only blows out cold air.
« Reply #10 on: 13 November 2013, 16:43 »
I did think it took a little while to warm up actually but I've only got my old 98 1.6 to compare to which was a sack of sh!t lol
MKIV AUQ - RamAir Induction Kit, Forge007p, (Custom Exhaust, Decent TIP, N249 Bypass and remap coming soon)

TRASHED BY SOME BELLEND WHO CANT DRIVE

Replaced with Leon Cupra 225, RamAir CAI, Forge 007p, Badger5 TIP, N249 bypass, Scorpion Decat and Catback, R-tech remap pushing approx 275bhp :-)

Offline mcgee9t2

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Re: Heater only blows out cold air.
« Reply #11 on: 13 November 2013, 16:48 »
easy way to test, let it hit 90, go down a motorway, if the enigne temp drops the stat or temp sender is stuck open.

but as said, if the temp is hitting 90 id guess at heater matrix too.

Offline Gti5382

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Re: Heater only blows out cold air.
« Reply #12 on: 13 November 2013, 17:10 »
Replaced my stat on Sunday, its fiddly but manageable. Part & seal were £9 at Eurocarparts + antifreeze
Only reached 90 at long idle before but was v low on normal driving: heater was luke at best. New stat fixed all that, now bang on 90 after 4 miles from cold today. Runs better & uses less fuel I reckon. Changed coolant temp switch as a precaution, 5 minute job and £22.

Steve.

Offline D1andonlyantman

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Re: Heater only blows out cold air.
« Reply #13 on: 13 November 2013, 17:15 »
Would the heater matrix be an expensive fix if it was that?

Just ebayed it and it's only 15 quid if i only need to replace the part that looks like a little radiator. I'll do the motorway temp test on the way home in the morning and go from there.  Cheers
« Last Edit: 13 November 2013, 17:36 by D1andonlyantman »
MKIV AUQ - RamAir Induction Kit, Forge007p, (Custom Exhaust, Decent TIP, N249 Bypass and remap coming soon)

TRASHED BY SOME BELLEND WHO CANT DRIVE

Replaced with Leon Cupra 225, RamAir CAI, Forge 007p, Badger5 TIP, N249 bypass, Scorpion Decat and Catback, R-tech remap pushing approx 275bhp :-)

Offline Gti_Jamo

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Re: Heater only blows out cold air.
« Reply #14 on: 13 November 2013, 17:40 »
Would the heater matrix be an expensive fix if it was that?

Dashboard out job. The matrix itself wont be too expensive. Are you getting good air coming through the vents. A blocked pollen filter can reduce air flow and wont circulate hot air efficiently. Its mounted under the flap on the scuttle panel below the windscreen ( passenger side).


97' Mk3 Golf Gti 2.0 8v Rebuild Project http://www.golfgtiforum.co.uk/index.php?topic=208865.0

Offline D1andonlyantman

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Re: Heater only blows out cold air.
« Reply #15 on: 13 November 2013, 17:44 »
Yeah a decent amount i reckon, just pretty cold. Sorry but what's a scuttle panel and is it easy to check the pollen filter?
MKIV AUQ - RamAir Induction Kit, Forge007p, (Custom Exhaust, Decent TIP, N249 Bypass and remap coming soon)

TRASHED BY SOME BELLEND WHO CANT DRIVE

Replaced with Leon Cupra 225, RamAir CAI, Forge 007p, Badger5 TIP, N249 bypass, Scorpion Decat and Catback, R-tech remap pushing approx 275bhp :-)

Offline mcgee9t2

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Re: Heater only blows out cold air.
« Reply #16 on: 13 November 2013, 17:56 »
Polen filter is located on pas side.

pop bonet, the plastic trim comes back on pass side (think you have to undo 1 or two screws) polen filter in there.

cant see it being pollen filter, if it was wet it would be steaming up in there and cant see it being blocked up that much to stop air flow unless it hasent been replaced for many years...

Offline D1andonlyantman

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Re: Heater only blows out cold air.
« Reply #17 on: 13 November 2013, 18:02 »
Ah ok, fair enough. I just drove a few miles to work. A bit of traffic in town with some stop start and then down an a road for a mile or 2 and when I got to work the temp wasn't even off the bars at the bottom of the scale. Looking like thermostat I guess
MKIV AUQ - RamAir Induction Kit, Forge007p, (Custom Exhaust, Decent TIP, N249 Bypass and remap coming soon)

TRASHED BY SOME BELLEND WHO CANT DRIVE

Replaced with Leon Cupra 225, RamAir CAI, Forge 007p, Badger5 TIP, N249 bypass, Scorpion Decat and Catback, R-tech remap pushing approx 275bhp :-)

Offline dane

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Re: Heater only blows out cold air.
« Reply #18 on: 13 November 2013, 19:42 »
I had the same thing with my mate it's the stat or temp not to sure as I done both now works a dream
Dane

Offline D1andonlyantman

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Re: Heater only blows out cold air.
« Reply #19 on: 14 November 2013, 07:16 »
Right, I just finished work and went for a drive. After a few miles the temp was still right at the bottom so I drove along in 3rd for a while to get the temp up. Once it was up a little bit to the bottom of the actual scale I stuck it in 6th and drove like I would normally for about 15 minutes. When I got to a petrol station the temp was here



When I got back in the car the temp was nearly at 90 which (I guess is operating temp) but once I got going I watched the needle go back to the same place as in the pic. Are we saying that's not normal running temperature and I've got a sticking thermostat? Kind of worrying if I've been thrashing it about for 2 months when it's never really been up to temperature properly :-s

Thanks
« Last Edit: 14 November 2013, 07:24 by D1andonlyantman »
MKIV AUQ - RamAir Induction Kit, Forge007p, (Custom Exhaust, Decent TIP, N249 Bypass and remap coming soon)

TRASHED BY SOME BELLEND WHO CANT DRIVE

Replaced with Leon Cupra 225, RamAir CAI, Forge 007p, Badger5 TIP, N249 bypass, Scorpion Decat and Catback, R-tech remap pushing approx 275bhp :-)