watsona6 Posted September 10, 2019 Report Share Posted September 10, 2019 Hi. New to the Spit world but I like it. Noticed my fan comes on at start up and stays on. Any ideas why this may be? Faulty sensor perhaps? Thanks. Link to comment Share on other sites More sharing options...
johny Posted September 10, 2019 Report Share Posted September 10, 2019 sounds like you have an electric fan which isnt standard fitment. This makes it more complicated because you dont know how its been wired up so I would first work out how this has been done and do a drawing. Once you know this you can work out if its been connected correctly and where the fault might be.... Link to comment Share on other sites More sharing options...
watsona6 Posted September 10, 2019 Author Report Share Posted September 10, 2019 Thanks. On first inspection with the untrained eye it’s hooked up to the alternator? Link to comment Share on other sites More sharing options...
johny Posted September 10, 2019 Report Share Posted September 10, 2019 well one correct arrangement would be a fused supply to an adjustable thermo switch measuring coolant temperature and controlling a fan. However there could be a relay, different types of fan controllers (or none), manual overide switch, indication light etc Link to comment Share on other sites More sharing options...
poppyman Posted September 10, 2019 Report Share Posted September 10, 2019 Andy, are you sure your five year old has'nt been playing "what does this switch do daddy" inside the car? I have seen people just use the fan's on a switch with nothing else.... Tony. Link to comment Share on other sites More sharing options...
watsona6 Posted September 10, 2019 Author Report Share Posted September 10, 2019 Ha ha. Are you watching me?! I have a 5 year old and he is never out of the car! There isn’t a fan switch though is there?! Link to comment Share on other sites More sharing options...
Clive Posted September 11, 2019 Report Share Posted September 11, 2019 The cars never came with electric fans, so every one could be wired in differently. So some do have manual over-ride switches. And yes, it is possible it has been wired so it comes on with the ignition. You need to follow the wires carefully, one (earth) is likely to connect to the chassis, and teh other will hopefully go to a relay, and then to a switch and/or thermostatic switch. The relay is also fed by a permanent live wire from a fuse. Or should be. But who knows exactly how it was fitted. If somebody was getting an overheating issue (real or perceived) they may have decided to have the fan on all the time the car was running. Not a good idea in reality. Link to comment Share on other sites More sharing options...
Dick Twitchen Posted September 11, 2019 Report Share Posted September 11, 2019 9 hours ago, watsona6 said: hooked up to the alternator? Hate to sound ......but do you mean by the fan belt hence a mechanical pump? 1 Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 11, 2019 Report Share Posted September 11, 2019 There should be a temperature sensor generally in the radiator or inserted in a coolant hose with some means of adjustment control Any signs of wiring to something of that order .??? Pete Link to comment Share on other sites More sharing options...
watsona6 Posted September 11, 2019 Author Report Share Posted September 11, 2019 Thanks to all. It runs when the engine is started as opposed to the ignition being on. When the engine is off and I turn the fan the belt (see pic) doesn’t move. I’d like to get it running as it should be so, going to source and fit the correct overflow bottle for the rad and I’ll try and work out what the OP has done with the fan set up. Pic below might give some better ideas. Appreciated. 1 Link to comment Share on other sites More sharing options...
DanMi Posted September 11, 2019 Report Share Posted September 11, 2019 That looks like a standard mechanical fan with a viscous coupling. It is turned by the fan belt so will always be turning when the engine is running, unlike a modern electric fan. The viscous coupling simply slows the fan at high revs. This is totally normal for a late 1500. The green tubes appear to be overflows from the carbs again normal. The overflow bottle is missing and should sit on the drivers side chassis leg in front of the radiator, I wouldn't be too concerned as Heralds didn't have one (I think) and really all that happens is when the rad heats up water expands and enters the bottle. Then when it cools it sucks the same amont back in so it should be full anyway when hot even without the bottle if filled cold. The bottle and bracket are pretty cheap anyway. Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 11, 2019 Report Share Posted September 11, 2019 Yes agree thats a std viscous fan its goo and paddle priciple the goo apportions the drive by dragging the paddles round, Air temperature changes the goo and between temperature and the rpm of the drive changes the drive to make best use of Engine power and cooling . There is no electrical its purely mechanical You will be better off read your new manual front to back and back to front and get to know your car You got us all excited and now we are snoozed Ha ! Pete Link to comment Share on other sites More sharing options...
Colin Lindsay Posted September 11, 2019 Report Share Posted September 11, 2019 46 minutes ago, watsona6 said: When the engine is off and I turn the fan the belt (see pic) doesn’t move. It won't. The rest of the guys have explained what the system is, and how it should work, so don't worry - it seems to be working as it should. Link to comment Share on other sites More sharing options...
johny Posted September 11, 2019 Report Share Posted September 11, 2019 ah fan mystery resolved and things are looking better - definitely a case of a picture is worth a 1000 words! No expert on viscous couplings but would imagine that with the engine off and cold the fan should turn easily by hand but with the engine just turned off hot after a good run, the fan will be harder to turn by hand. This is important as believe these couplings can fail and then affect cooling at slow speeds.... Link to comment Share on other sites More sharing options...
poppyman Posted September 11, 2019 Report Share Posted September 11, 2019 16 hours ago, watsona6 said: Ha ha. Are you watching me?! I have a 5 year old and he is never out of the car! There isn’t a fan switch though is there?! You mentioned on an earlier post you had a five year old haha, so not stalking you. Glad your fan is sorted Andy, you are a true beginer with cars... Dont let that put you off, as jonny say's a picture is worth a thousand words. When you get your workshop manual read it every chance you get, but start with simple things. Your mechanic will probably know what you are able to do by yourself? I had one or two customers that used to love having a play. One word of warning, if you cock something up? and cant fix it? Tell your mechanic exactly what you have done..... He will thank you for telling him.. Tony, Link to comment Share on other sites More sharing options...
watsona6 Posted September 11, 2019 Author Report Share Posted September 11, 2019 Cheers. True beginner - yep but keen to learn. Generally have an idea of my limitations.... I’m not so bad with electrics so plan to remove, improve and reinstall the dash myself. May try and wire a stereo up too but not too sure what I want to do speaker wise. Might just stick with the headphones. I’ll repair the hood and repair the door mechanism. Think I’ll leave the locks that don’t work but unsure how that impacts on insurance? I’m lucky in that the mechanic works for the firm I manage. If I took some time off work I’m sure he would spend the day showing me some of the more basic mechanical tasks. Haynes arrives tomorrow so will be some bed time reading. Probably start with the passenger door pages!! 1 Link to comment Share on other sites More sharing options...
Paul H Posted September 11, 2019 Report Share Posted September 11, 2019 4 hours ago, watsona6 said: Cheers. True beginner - yep but keen to learn. Generally have an idea of my limitations.... I’m not so bad with electrics so plan to remove, improve and reinstall the dash myself. May try and wire a stereo up too but not too sure what I want to do speaker wise. Might just stick with the headphones. I’ll repair the hood and repair the door mechanism. Think I’ll leave the locks that don’t work but unsure how that impacts on insurance? I’m lucky in that the mechanic works for the firm I manage. If I took some time off work I’m sure he would spend the day showing me some of the more basic mechanical tasks. Haynes arrives tomorrow so will be some bed time reading. Probably start with the passenger door pages!! I found the AA Book of the Car very useful and educational, helped me a great deal in understanding how my Vitesse should work £4.50 delivered , no brainier https://www.ebay.co.uk/itm/AA-Book-of-the-Car-by-Jacobson-M-A-I-technical-ed-Book-The-Cheap-Fast-Free/301505246383?epid=1805409773&hash=item46331cf4af&_trkparms=ispr%3D1&enc=AQAEAAADIKvsXIZtBqdkfsZsMtzFbFsbX3WcW5fmB%2Fx7ZbaZTyexpxFaT4emAGHdahSn7Pg5%2F8xpgKPotI4cpEzMglkPSk2nf4lodWIfFLCKXULvGKDtDC8YbAO7D6dScQC3b5XklZlLf%2Fd%2BRzpTZJlAnw%2BuRUcTRGwCnVjWDKLhE0enrSMNiomDN4N3vbN1XrnEhpAyiPOysVhxc5mrH4upe56musXnTGJPadygeOZ5kuOKJUK4SZxwhnQOIDAYiS5sFHbkcndYrM%2BtgT%2BgWyjmlrZV1l4vkwc17syJrIQgs4zlB5l7Ps33oyZ%2BzIMdIi5Ae0j372KTEACRMVZV1HLhY%2FM7ztB69xcQyRNhOAw4OV3UXUJj%2BbVQzkGObSw0m6Zr8uR7o0r5E5V2A0NNng6yPDDrHW498%2F29fpwN6GTB8fMa7vaTBSt9%2Bc%2FO2loYd5giAkriyDqVmfzJYFFp3pWApLlU8ohlMgN%2BsAnJvp1OCudLnk%2FXvWmO44gY23kD208yBaEaBdnGU9bJ7hNeC4OA2WIIU3ROCuXA2Rr6gIZilPG4QxZZPid9toUASHwVDq7LtWaiF%2BILyKHoH3DqUgn9tVNFtPTjRjexP3avtBuVul1hypOxzx5in6qXyt%2BpnHq%2B%2Bn3uBzfrOZVFy37CYzP6avDZuQ5R6JNRW%2FSFNIkd3YcbfiDmhrKIIF%2FKoTCPB6NhxycDA6ZT6A%2Buk%2B%2BOld8BNtkYlOr0Od%2BoCctRu%2BXVgGt3Sy%2BIO97bgr%2FXBL8py6dU7AlmwUf05pHnlhy0T0K7mBri7VzpxM0cRyM85YjKYO8M%2FIF5A4dsM9vPp0Wfl0pYRlOE71zaRmiBadVskHmgrRXWdvOcYOYM9kala%2Franq3Vs7XkzXemaofJ1hRZktmSHwXRqqe%2BookXUX6mLpXLwRtrKyTN5%2F7m1G6SAN62FnqzqPnAsZA8SodwN964jTUohKwxY%2BoieoGKlpoJprevew%2Bylgn8ZXWNE5f5JVOqJ5WyBen1A%2BkXyz%2BOn99qfQu5vX%2Bi64QJw9T3YFHVnl59YRsKSqNDTOQUymih0G%2BCH0%2FaUf3a&checksum=301505246383baa982a0b8d043b0b1deec6f8b8bffb9 Paul Link to comment Share on other sites More sharing options...
watsona6 Posted September 11, 2019 Author Report Share Posted September 11, 2019 Bought. Ta. Link to comment Share on other sites More sharing options...
poppyman Posted September 11, 2019 Report Share Posted September 11, 2019 44 minutes ago, watsona6 said: Bought. Ta. Ps. Dont forget to drive the car now and again when you not reading manuals Tony. Link to comment Share on other sites More sharing options...
SpitFire6 Posted September 11, 2019 Report Share Posted September 11, 2019 That was a fun read. Everybody assumed it was an electric fan. 🤣 1 Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 12, 2019 Report Share Posted September 12, 2019 Think the first post surprisingly lead us down the assumed path Were are all easily lead or diverted Pete Link to comment Share on other sites More sharing options...
Dick Twitchen Posted September 12, 2019 Report Share Posted September 12, 2019 23 hours ago, Dick Twitchen said: Hate to sound ......but do you mean by the fan belt hence a mechanical pump? I did of course mean fan! Link to comment Share on other sites More sharing options...
TomL Posted September 12, 2019 Report Share Posted September 12, 2019 18 hours ago, watsona6 said: .... Might just stick with the headphones.... Hi, I would advise against using headphones when driving, and particularly a classic. Apart from sirens from emergency service vehicles, you need to be listening out for any strange noises from your car's mechanicals. Fitting a music system with conventional speakers to our cars is not a difficult job; in fact it should be an enjoyable project. I agree with Paul H that the AA Book of the Car is a very helpful resource (except for the section on bodging sills with chicken-wire and filler!). Let us know how you get on. Tom Link to comment Share on other sites More sharing options...
AndyTV8 Posted September 12, 2019 Report Share Posted September 12, 2019 On 11/09/2019 at 16:21, watsona6 said: May try and wire a stereo up too but not too sure what I want to do speaker wise. Might just stick with the headphones. The simple option is to have a rechargeable Bluetooth speaker in the car, then just stream music/online-radio from your phone. Mine has an 18hr battery-life, so easily lasts a week of daily commute without needing a charge. if you park up anywhere dodgy, just stick the speaker in the boot. ...... Andy p.s. I do have a radio fitted, but it is just a period-ornament to fill the mounting hole! Link to comment Share on other sites More sharing options...
watsona6 Posted September 12, 2019 Author Report Share Posted September 12, 2019 Good ideas and fair point TomL. Link to comment Share on other sites More sharing options...
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