JENIAN Posted January 29, 2007 Share Posted January 29, 2007 I own a 1991 Talbot Autosleeper Harmony 2lt petrol and I am having trouble with the cab heater. I have replaced the Heater matrix and valve with 2nd hand parts from Delfin Designs and the matrix has been flushed through with no problem. The matrix his getting hot, both inlet and outlet pipes are getting hot but the vents in the cab are blowing cold air. I have checked and rechecked the connections the heater controls from the dash to the heater. I have been told by Peugeot that they do not make heater matrix for this model anymore. Anybody any ideas of what I can do about this problem please. Link to comment Share on other sites More sharing options...
Globetrotter Posted January 29, 2007 Share Posted January 29, 2007 Hi Just spotted the following item on www.ebay.co.uk item no.120080683278 New matrix and valve. Might solve your problem? Link to comment Share on other sites More sharing options...
JENIAN Posted January 29, 2007 Author Share Posted January 29, 2007 Thanks John, There are three types of matrix and I do not think the one on Ebay is the right one, but thanks for the reply Ian Link to comment Share on other sites More sharing options...
Brian Kirby Posted January 29, 2007 Share Posted January 29, 2007 If the matrix is hot, and the air cold, the air isn't passing through the matrix. If air is emerging from the vents the fan is presumed OK. That suggests the problem is with the air diverting dampers in/on the heater pipework. In other words, somewhere, the air supply isn't being diverted via the matrix. Disconnected cable, faulty selector knob on the dash, or a seized damper blade/s? Link to comment Share on other sites More sharing options...
JENIAN Posted January 29, 2007 Author Share Posted January 29, 2007 Thanks Brian I am removing the whole heater assembly tomorrow and will inspect the damper blades etc. I am also taking the heater matrix to a specialist radiator firm in Lincoln to be tested for part blockage etc. this has got my mechanic and myself well and trully baffled. Ian Link to comment Share on other sites More sharing options...
Guest starspirit Posted January 29, 2007 Share Posted January 29, 2007 How about the possibility of an airlock in the heater system following draindown and refill. There is probably a routine for bleeding but I don't know what that is but meanwhile I might try loosening the highest of the heater hoses at the bulkhead or highest point in the engine compartment and seeing if air exudes when the engine is run. A watering can full of coolant is handy to replenish the syatem and you really need three hands to do it all at once. There may even be a bleed valve somewhere - I can't remember Link to comment Share on other sites More sharing options...
Philman Posted January 29, 2007 Share Posted January 29, 2007 Hi JenIan, if the input and output pipes of the heater matrix are both getting hot I can't see how the matrix could be faulty/blocked. As Brian suggested the fault is most likely that the dampers are not moving correctly and therefore not diverting the warm air to the vents. It is not unknown for one of the pipes to the vents to have fallen off, but unlikely if they all have. It is equally possible that the control wires may have been connected to the wrong flaps by a previous owner or they may just need adjusting, especially if the outer has moved and has not been tightened correctly Phil. Link to comment Share on other sites More sharing options...
JENIAN Posted January 31, 2007 Author Share Posted January 31, 2007 Thanks Phil, Decided on inspection to let the man in the know (mechanic) take the whole heater unit out today for testing of the matrix and fault finding ie damper blades etc etc. I am going to ask that the heater be isolated in the engine compartment so we can you use the van. Thought about purchasing an independant heater that you can plug into the cig lighter for demisting etc. Ian Link to comment Share on other sites More sharing options...
PAW Posted January 31, 2007 Share Posted January 31, 2007 Hi Jenian i own a talbot express myself and do all my own repairs (retired mechanic) i had the same fault heater matrix fine but no hot air , found the fault to be 1 of the blades not moving to let air pass through the matrix ,if you look under the bonnet at the rear of the engine you will see a plastic open ended box which lines up with the vented area on the bonnet (when the bonnet closed) if you look down into this box at the rear connecting to the bulkhead you will see a flap/blade if this is closed then there will be no air drawn through the matrix ,the operating button/lever for this flap/blade is the lower left looking at the dash ,i maybe be wrong as to which controls the the flap as i havent been out to the van to check its to cold and im being a bit lazy , i hope this helps paw Link to comment Share on other sites More sharing options...
JENIAN Posted February 1, 2007 Author Share Posted February 1, 2007 Thank you so much Paw. Watch this space. Ian Link to comment Share on other sites More sharing options...
JENIAN Posted March 6, 2007 Author Share Posted March 6, 2007 Finally solved by buying a new matrix and valve of ebay and fitted by my local garage. Thanks to all for their advice. This was after purchasing 2nd hand matrix (which turned out to be blocked) and valve from delfin designs. I have tried to get my money back but no response after numerous attempts. Anybody had problems with this firm in the past???? Link to comment Share on other sites More sharing options...
W3526602 Posted March 6, 2007 Share Posted March 6, 2007 Hi, Problem solved, good, but you are going to get the OT bit anyway. Vehicle was a Morris J2 minibus - forerunner of the Sherpa. Blowing cold air, and not much of that. You could feel a vague draft if you held your hand near the heater. During the investigations somebody walked past the front of the van....and complained about the blast of hot air. Yep, the fan was blowing the wrong way. 602 Link to comment Share on other sites More sharing options...
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