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200 Series General Forum for the Volvo 240 and 260 cars |
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JJs Project Thread - 240 GL EstateViews : 45891 Replies : 396Users Viewing This Thread : |
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Aug 3rd, 2022, 23:33 | #261 |
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Coiled spring on the front of the clutch: When air temperature passing through the radiator exceeds a level (be it high external air temperature or an overheating radiator) the coil expands, turns internal gubbins which opens fluid ways and the thermoviscous clutch engages, causing fan to turn at crank speed.
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Aug 3rd, 2022, 23:39 | #262 | |
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JJ
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Aug 4th, 2022, 06:41 | #263 | |
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... they aren't expensive (maybe £20) and are useful for lots of other things. Point it at the thermostat housing when the engine is hot - it should be 90c or there about. It is always a good idea to make sure one is fixing the right problem :-). Then then check the potential difference at the instruments - it should be 10v. If the motor car isn't running hot (unlikely if the fan isn't coming on) then perhaps the gauge is heading high (does the fuel gauge read high at the same time?) - the culprit may well be the 10v voltage stabiliser in the instrument binnacle. I replaced the the very quaint mechanical type device in mine: ... (although yours is a later motor car and may have something more modern) with a solid state stabiliser (cost about a tenner and a really easy job: That solved the issue completely. If that isn't the problem we can start looking for real overheating problems elsewhere (but you seem to have already fixed all the likely culprits already). I wouldn't have thought running hot (if it is) would lead to high fuel consumption (probably the opposite). That needs a bit more investigation. Start off by making sure the basic things are right, so check the compression across the cylinders (easy and cheap to do) and the ignition timing. You said your distributor had seized (common problem) but you can still check it with a strobe - if it is incorrect we can start thinking of ways to get it moving. Another lovely day in paradise. Alan PS. You may need a 'Special Volvo B21a Distributor Adjuster' like this one to free it (after a few more doses of DP90): https://www.volvoforums.org.uk/showp...postcount=1388
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... another lovely day in paradise. Last edited by Othen; Aug 4th, 2022 at 07:38. |
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Aug 4th, 2022, 11:14 | #264 |
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Spot-on advice from Othen there.
It's worth pointing out as a general note that, with modern ignition systems, turning the dizzy will often do almost nothing (until it's turned so far that the rotor tip is aligned with the wrong cap contact, anyway), as the timing is entirely controlled by the computer. The 240 is an exception, in that the timing pickup sensor is built into the dizzy, so that will adjust the timing, but turning the dizzy essentially does nothing on a car with, for example, a flywheel pickup (such as a 940, or 850). I agree that if the dizzy is corroded up and this is a new problem, it's not going to be that. Possibly worth checking the cam (and aux belt) timing in case it's jumped a tooth. Running lean certainly will increase engine temperature, but I think it's vanishingly unlikely to be the cause here, especially as it's doing it worst when pottering. I'd start with Othen's advice and take it from there. cheers James
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Aug 4th, 2022, 18:48 | #265 | |
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If the OP hasn't done it already then a new timing belt would be a good idea anyway, I bought a new Gates belt just a few weeks ago for about a tenner and it is a really easy job to swap.
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... another lovely day in paradise. |
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Aug 5th, 2022, 20:14 | #266 | |
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New viscous fan clutch on the way JJ
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Aug 5th, 2022, 20:18 | #267 |
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So this evening I refreshed the black strips under the windows
I know these are decals - and maybe getting new ones would be better but I just masked off and sprayed Used some left over stone chip matte black Turned out all right I think JJ
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Volvo 240 GL Estate Peugeot e208 GT Smart BRABUS ForFour Smart Fortwo cdi Last edited by Problemchild1976; Aug 5th, 2022 at 20:57. |
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Aug 5th, 2022, 21:01 | #268 | |
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Alan
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... another lovely day in paradise. |
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Aug 5th, 2022, 21:06 | #269 | |
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It was pretty warm when I tested it 👍🏻 It’s only £30 for a new one - rules out another issue JJ
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Aug 5th, 2022, 21:21 | #270 | |
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It’s turned out successfully on my 245 GL , why not yours?😎👍
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