Very weak blower/fan - 993

[Ocho]

Hello all

Not a biggie, but the fan for the heater in my 993 is very weak. Does anyone have any experience of this and what might need changing? I'm assuming it's probably the heater motor itself, but could it be anything else before I get stuck into that (at unnecessary expense, too)

thanks all

[Ocho]

Burrow01 said:

Its probably the blower motor, they are available, £196 each, unfortunately the work to replace them is extensive - fuel tank needs to be removed to get to them. I just had both of my blower motors replaced due to seized bearings, bill was approx £1000

Ouch!

[Ocho]

Thanks for the suggestion. I've ordered a pair of new filters - regardless of whether this is the issue or not I'm pretty sure they'll be due for a change anyway.

I'll report back...

[Ocho]

Thanks very much.

Curiously I was following this listing on Ebay, but it looks very different to the blower your link goes to???

https://www.ebay.co.uk/itm/235379098451?mkcid=16&a...

[Ocho]

A993LAD said:

That is the rear blower fan and it's housing. It sits above the engine and blows the hot air to the front. Where it then gets boosted into the cabin by the 2 fans in the bulkhead.

The engine one is both cheaper to buy and easier to replace. But the front ones are not too difficult if you follow the Pelican instructions.

BTW I didn't have the special tool to remove the fan so I just used a couple of flat blade screwdrivers as they suggest. You can look at the new fan to see the plastic tabs you are trying to push back with the screwdrivers.

So if the filters aren't the issue, I presume my problem be either one of these two fan types (engine bay fan or bulkhead boosters)? I guess just turn it all on and have a close listen to see which are working?

[Ocho]

OK, so I got round to having a listen and the fan in the engine bay wasn't working at all. Looking a little closer it didn;t take long to see why - it's not connected.

There are two loose connections, one of which was very obvious, the one indicated by the green arrow (now connected again). The fan now works and blows much stronger inside the cabin. However, after turning everything of, the blower remains on. I thought this might be just a "coolinf the engine down post-drive thing, but 10 mins or so later it's still going.

So I'm going to go out on a limb and say this is possibly due to the other connector (red arrow) that is still not connected to anything and is possible something to do with controlling when it switches off.

Can anyone offer any advice on where this one should connect to and whether this is my problem or if there is something else - quite possibly there is and that's why they were both disconnected???


EDIT - a couple of minutes later and it DID turn off. Starting up again it all works as it should still (just in case perhaps it had turned off because something had burnt out or the fuse had gone). So that's ok, but the mystery of the other connector remains...

Edited by Ocho on Saturday 13th January 14:30

[Ocho]

mlsporsche said:

Wiring harness recall means there will be spare sockets that arent used. All is good with your car!

That makes sense as I found a couple of other “spares” dangling around. I’ve secured them better.

Thanks very much - nice to have it blowing again.

Now about changing those pesky pollen filters…

[Ocho]

So I've changed the pollen filters. No idea how long ago they were last changed. I bought new ones, but it turns out there was a pair of them in a box of bits that came with the car 5 years ago - didn't realise they were there or I could have saved myself a few quid!

Anyway, Photos attached - the one on the left is one of the stored but presumably new ones. The one I've taken out is clearly dirtier, but not significantly I don't think, but then I've never seen one before. Thoughts???

[Ocho]

acme said:

No pics attached, but interested to see as mine need doing too, not sure they’ve been done in years …..

Good point...

Here they are - genuinely interested to know if these are bad or whether they have likely been changed at some point recently.

[Ocho]

And here's a close-up of the old one.

[Ocho]

acme said:

Cheers.

Is the one on the left new? There’s two isn’t there, one either side?

Yes that's correct. And yes the one on the left was for comparison..

[Ocho]

OK, so now the engine compartment blower is working but it is very noisy - has anyone tried to service one of these?

Thinking it might just be a case of taking the covers off and adding some lubricant?

[Ocho]

mlsporsche said:

That might work for a few days, the bearing will be on the way out, they get very hot in the engine bay, probably why the previous owner unplugged it!

Can the bearings be replaced or is that likely to be outside of my skill range

[Ocho]

Thanks both. Another question (sorry) - why is my engine bay different to the one I found online on a youtube video - the first photo is the one I found which appears to have a specific "intake" for the blower and the second is mine. Is this a difference between pre & post varioram updates (not that it is necessarily related to the varioram)...??? Mine is a 94 and I think the red one is a 96.

Interestingly, looking at the underside of my engine cover, there appears to be a square opening that would roughly match the intake on the first photo?

[Ocho]

Thanks OJ. Interesting looking at those two photos. There are quite a lot of differences in the layouts between the two. Shows that you need to be careful looking up info online for "how to" jobs to check you're comparing like for like.