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Old 25-10-18, 04:58 PM   #1
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Default 308s 2008 heater problems

Hi I have an issue with my Heater. I've read up and it seems that there's air in the System. This is from when the previous owner took the car for a Tappet Cover Gasket replacement, a inexperienced technician did NOT bleed the water system correctly so my heater doesn't work. Anybody live in my area (March, Chatteris, Ramsey, St.Ives Cambs) that is experienced enough to help me do the Job?
Thank you!
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Old 25-10-18, 07:29 PM   #2
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Turn the heat to hot and full start and run the engine. Bleed from
The thermostat housing and keep the coolant cap off squash some coolant pipes and make sure the car gets up to
Tempreture

Never had an issue this way


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Old 27-10-18, 08:18 AM   #3
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Many thanks for your suggestion, I'll give it a bash! 👍
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Old 27-10-18, 08:53 AM   #4
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Is the coolant level in the header tank still correct? Often it can push the air out when running but this drops the water level there.
I have always done as suggested above and never had a problem.

Some models had an extra bleed valve on a pipe behind the engine, but I have never bothered with that.
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Old 17-12-18, 11:32 AM   #5
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Did you have any luck solving your problem? I reckon I’ve got an air lock still despite bleeding both valves and can’t seem to shift it!
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Old 30-12-18, 07:41 PM   #6
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Did you have any luck solving your problem? I reckon Iíve got an air lock still despite bleeding both valves and canít seem to shift it!
Had the same problem with a 308 ive just brought, little to no heating, I tried everything in the book, bleeding, getting it to temp, checking the damn weird thermostat thing was opening, all the pipes were eventually getting red hot, so I removed the 2 pipes going into the matrix and stuck a hose on it, turned on full power at the tap, no apparent blockage in the matrix, so after about 2 or 3 days of trying different things, turns out to be the water pump, crappy plastic impeller that doesnt last long at all on the original part, if it turns out to be this for you, its dead easy to change, and get the upgraded version that comes with the metal impeller, heating is working fine now, you'll probably have to go to ebay for that part as the regular stores only had the plastic ones.

This is the one for my particular model https://www.ebay.co.uk/itm/WATER-PUM...2YDY:rk:3:pf:0
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Old 30-12-18, 07:50 PM   #7
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There is often an overlooked bleed point on the bulkhead at rear of engine bay where the pipes join to the heater matrix. I have found a few times bleeding there gets the heater working
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Old 02-01-19, 04:49 AM   #8
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There is often an overlooked bleed point on the bulkhead at rear of engine bay where the pipes join to the heater matrix. I have found a few times bleeding there gets the heater working
This is very true, its difficult to see, but it looks like a dust cap off a car tyre, I got to mine by removing the air induction pipe, just one 10mm bolt to remove and a jubilee clip then this pipe pulls out, you can then clearly see the 2 pipes going into the matrix, one of them has the bleed screw on it.

There is another bleed screw on or near the thermostat housing, its a big cross head screw and made out of plastic, so be very careful with it, get an over-sized flat head screw driver on it and push the screw driver into the cross so that it sticks, because if you completely take this screw out, then good luck to you to get it back in, its deep down and covered in pipes and wires, just to the right of the rocker cover as you are looking at the engine, just make sure you unscrew it all the way and then just leave the screw driver wedged into it so you can guide it back in using the screw driver.
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Old 14-01-19, 04:01 AM   #9
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Cheers Seanie, I think this could be my next port of call! Can you recommend any good guides on how to do it at all?

Only thing I’m wondering is that if it was the pump then surely the car would overheat?

Also did you need to replace the belt with it? I have spotted kits that include the new gasket and belt, wonder if it’s worth it?

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Quote:
Originally Posted by Dfbrand View Post
Did you have any luck solving your problem? I reckon I’ve got an air lock still despite bleeding both valves and can’t seem to shift it!
Had the same problem with a 308 ive just brought, little to no heating, I tried everything in the book, bleeding, getting it to temp, checking the damn weird thermostat thing was opening, all the pipes were eventually getting red hot, so I removed the 2 pipes going into the matrix and stuck a hose on it, turned on full power at the tap, no apparent blockage in the matrix, so after about 2 or 3 days of trying different things, turns out to be the water pump, crappy plastic impeller that doesnt last long at all on the original part, if it turns out to be this for you, its dead easy to change, and get the upgraded version that comes with the metal impeller, heating is working fine now, you'll probably have to go to ebay for that part as the regular stores only had the plastic ones.

This is the one for my particular model https://www.ebay.co.uk/itm/WATER-PUM...lineimg" />f:0

Last edited by Dfbrand; 14-01-19 at 04:08 AM.
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Old 15-01-19, 08:52 AM   #10
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Dead easy to change, drain your coolant, release the tentioner, and remove the belt, if you have that plastic engine cover under the car you will need to remove that, now put a jack under the engine, remove the top engine mount and lower the engine on the jack about 2 / 3 inches, now get under the car, remove the pulley wheel off the old pump, 3 bolts, and now remove the 5 bolts holding the pump in place, pull out the pump, you will get covered in some coolant left in the pump, fit the new pump, fit the pulley wheel to it, now go back to the top of the car, jack the engine back up and refit the engine mount, fit the belt and tension it, remove the jack from under the engine and refit the plastic splash plate.

Continued below.......
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