hi all, In my 1987 euro cab mondial, the interior heating is very unsufficient. I did ask my mechanician to look at it but it is quite very weak. the exterior temp was not so cold and when cruising at 130km/h the inner temp was still cool. ok, my car is a cab, so bad insulated, but... also i remarked that very very few hot air is coming from the circular lateral air provider. i suspect the thermal regulator to be bad calibrated. do anyone have an idea or sugest ? is it a "regular" default of the mondial or can it be improved ? thanks
My 1988 cab heater works well, more heat than I can take if required, and I drive in temperatures in Canada are near freezing today. No reason why you shouldn't get heat in a properly functioning system. I found that a repeated bleeding was necessary to get the heater to work properly. Bleed at the rad, and at the engine, with the engine, cold, hot anything in between, and do it a few times. Once the air is out, things work. I thought I had probelms with sensors, etc., but it was the bleeding that helped. Otherwise, could be a stuck thermostat. Assuming the fan is working, there are some sensors and valves to check, there are some FChat threads on this topic I recall. But there is nothing really special in the Mondial, its a BMW type system from the period I believe, no reason for special Ferrari considerations.
I'd check the thermostat first. Never heard of this being a particular "mondial" problem. No need for heat here in Florida. Now, if the air conditioning was no working right, then I'd have a problem. Hope you sort it out. Cheers
I had a similar problem but it was hot all the time. The control appears not to work. I have not looked into it or fixed it, sorry.
I am sorry moysiuan but my poor english is not suffisient to understand your procedure. Could You please re explain it with a more "academic" english, or different words : "I found that a repeated bleeding was necessary to get the heater to work properly. Bleed at the rad, and at the engine, with the engine, cold, hot anything in between, and do it a few times. Once the air is out, things work. I thought I had probelms with sensors, etc., but it was the bleeding that helped. " does "bleed" mean "purge" ? purge what ? what fluid ? where ? what means "bleed at the rad". radiator ? bleed air of the radiator ? how ? opening fill cap ? while engine running ? right ? "bleed at the engine" : where ? engine running ? thanx a lot and sorry for my bad english, i am french...
He means you may have air in the cooling system that is stopping the flow of water to the heaters. You shoud try and remove it (bleed / purge it from the system). There are two places where you let the air escape - one is at the radiator and the second is at the thermostat at the engine. If there is air and you let it escape then your heater may start to work properly.
Undo the moletee boulon (knurled bolt) by hand at the radiator, with a small container or chiffon (rag) to catch the anti gel (anti-freeze) that will dribble out probably with some air coming our first. The other place to delivrer (purge) the air is in the engine bay, at the top of the thermostat housing. A 12mm wrench will loosen this a bit, and a chiffon around the area will soak up the antigel. I would first do this first with the engine off. Then do again with engine on, after a good enchauffement (warm up), and the heater control set to the on position. These cars are difficult to purge air out of the cooling system, and before considering any other heater issues, do this first. Its pretty simple. Just be careful when you do this while the engine is hot, as the anitfreeze is chaud (hot). And, once the car is fully cooled down, check your antifreeze level, and top it up if necessary. Pictures of the two bolts to do this are attached. Bonne chance. Image Unavailable, Please Login Image Unavailable, Please Login
Hey good luck with this. I've found that the heat on my 87 Mondial is generally fantastic. It's the A/C that's marginal.
Bonjour Oliv928, je suis propriétaire d'une mondial 3.2 coupé de nov 85 (une des première donc...) et j 'ai également un soucis avec mon système de chauffage. J'ai résolu mes problèmes de clim par un bon retrofit R134. j'ai en effet changer mon compresseur, déshydrateur, joints etc...Mais pour le chauffage, je coince...J'ai vérifié la totalité du circuit, les sondes à différents températures, le potentiomètre de réglage (0 à 10 kohms), les 3 relais sous les aérateurs centraux. J'ai même remplacé la centrale de contrôle derrière le repose pied passager...La valve est ok, puisque lorsque je la débranche en direct la chaleur arrive car elle s'ouvre à fond (si le 12v reste dessus, elle est en position fermée)...Pourtant lorsque je mets le potentiomètre de réglage à fond dans le rouge, cela ne chauffe pas...à devenir fou...je vais tenté une purge pour voir, mais cela est vraiment étrange...en attendant, jai mis un interrupteur pour isoler la valve et obtenir de la chaleur rapidement quand j en ai besoin, genre dégivrage du pare brise...Si tu trouves quelques solutions, je suis preneur...Bon courage à toi
