159 2.4 20007 plate
19,500 DPF/EGR by
AO Silver Member
Join Date: May 2009
Location: United Kingdom
147 heater blower, pollen filter and scuttle water drain!
Well a busy weekend sorting my son's 147 2.0 petrol.
The plan was thermostat change (I've had the part for about 5 months!) However, he came home to complain that the blower had stopped. He's also intermittently commented that he could hear water swooshing around when he turned corners.
So the job that got priority became removing and checking the blower on a 12 volt power supply - can't drive in this weather without demister. I was amazed at how easy it is to remove the heater. Remove the carpet under the passenger glove box (3x 10mm nuts and a plastic fitting that unscrews) then the blower is mounted vertically under the carpet / almost behind the glovebox. Now 1x 5.5mm (no other size will suffice) self tapping bolt to remove, turn the blower 1/8 of a turn and it drops down and out though there is one electrical plug connector to remove. Tested on a 12V battery and completely dead. Trip to my friendly breaker and despite advertised 5:30PM closing he was closed when I arrived at 4:10 - bugger.
Back home and have a good look to see how this blower comes apart (I can't make it any worse), 4x spring clips and 4x plastic clips. I can get the steel spring clips off but can't release the plastic clips. In for a penny - break the plastic clips off, remove the cover and the brushes etc. are all revealed but it is all capitive and I can't get into anything for further dismantling. This area of the motor is corroded, wet and cruddy. Spray with WD40 and wipe clean. Gently warm up with a hot air gun to dry everything and re-test without luck. Mmmm. I can see where the brushes are and the wires connected to their rear. Spray the area with electrical contact cleaner/lube plus work the brushes in and out a few time. Back on the battery and voila a working motor. Refit with the spring clips and it seems to be holding together nice and tight. Back on the car and all working.
Next job fit the pollen filter; some good posts on here showing where the 3x 5.5mm socket head self tapping screws are. The old one was black, full of leaves and wet.
Next is tracing the water and this forum gave the answer to that. Remove plastic cover over the front scuttle under the passenger side windscreen wiper. 3x torx screws and 1x phillips screw and the cover is off. The scuttle is FULL of water. Find the drain that is in the center of the scuttle and poke clear with my finger - water gone. This also explained damp carpet, damp pollen filter and corroded blower.
Next task was thermostat and all I can say is invest in the special pliers for the spring clips - you really won't regret it. I have always faffed about with these but this time bought the right tool and hose removal and refit becomes a 5 second job. But there are still 2x hoses where the clips are a different type and don't seem reusable so go armed with 2x jubilee or equivalent clips for the two large hoses. If you aren't draining all the coolant then you only need one clip but I also took bottom hose off as I wanted all the old coolant out and the car filled with new coolant. Faff of a job but there are many worse.
Car now heats up quickly and rock solid at 90 deg, blower works, windows don't mist up due to damp interior and putting the fan on clears any mist rather than making it worse!
Last edited by kandlbarrett; 31-01-16 at 19:40.