bishbosh Posted October 14, 2008 Share Posted October 14, 2008 I couldn't use a VDO water temp sender to measure the autobox oil temp? The gauge ranges from 40 to 120 deg C so should cover the operating temp of the auto box. The reason being is I have a water gauge and sender already... Quote Link to comment Share on other sites More sharing options...
ciderman Posted October 14, 2008 Share Posted October 14, 2008 with a matched sender I dont see why not . Quote Link to comment Share on other sites More sharing options...
Guest WALFY Posted October 14, 2008 Share Posted October 14, 2008 How hot does the auto box get? As long as you have a sensor to suit the temp range then I would think that it'd be fine. Quote Link to comment Share on other sites More sharing options...
ciderman Posted October 14, 2008 Share Posted October 14, 2008 Well if the gauge ranges to 120 that ought to cover it , 120 is well past boiling (For water ) Quote Link to comment Share on other sites More sharing options...
Guest WALFY Posted October 14, 2008 Share Posted October 14, 2008 Boiling point for ATF is??? Hence my comment Quote Link to comment Share on other sites More sharing options...
TJ101 Posted October 14, 2008 Share Posted October 14, 2008 Why Bish ?? Just more information of impending doom, to be taken in,,, and worry about !!! Low oil Pressure and high water temperature, is all that's needed !!! Quote Link to comment Share on other sites More sharing options...
pat_pending Posted October 14, 2008 Share Posted October 14, 2008 80-90'C is about max in the sump pan, but that could hit 140'c+ as it leaves the box for the cooler. If you're really serious you'd want to monitor both points, to see how hard the box was working and see how effective the cooler was. And check you're not overcooling. I'd also consider fully synthetic ATF if you intend giving the box some grief. Quote Link to comment Share on other sites More sharing options...
MrHT Posted October 15, 2008 Share Posted October 15, 2008 i'm assuming the VDO gauge is the manual type, so it's quite possible the water gauge will not have oil tolerant seals and will fail in a short time and then possibly leak Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted October 15, 2008 Share Posted October 15, 2008 No, the VDO 40-120 gauge is electrical. (I've got one to replace the silly LR Defender Tdi gauge). We also use those senders in the transfer box with our EMS systems. If your ATF goes to 120°C then your box will be on it's way out unless you run decent synthetic ATF Dexron III. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted October 15, 2008 Share Posted October 15, 2008 For some bling, you can monitor both pre and post cooler with one gauge http://www.spa-uk.co.uk/design/productdeta...=DG%20209%7C374 *cough* at the price though Quote Link to comment Share on other sites More sharing options...
mmgemini Posted October 15, 2008 Share Posted October 15, 2008 For some bling, you can monitor both pre and post cooler with one gauge http://www.spa-uk.co.uk/design/productdeta...=DG%20209%7C374 *cough* at the price though Don't look at the price. Look at the quality. I have three of their gauges fitted. I'm very pleased with them. mike Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted October 15, 2008 Share Posted October 15, 2008 Don't look at the price. Look at the quality.I have three of their gauges fitted. I'm very pleased with them. mike Undoubtedly it is a lovely, lovely item, not sure I could justify it though. Quote Link to comment Share on other sites More sharing options...
bishbosh Posted October 15, 2008 Author Share Posted October 15, 2008 Thanks all. I may well give it a go them. Tim - why? becasue the LR warning method is just a light. I get no indication of impending doom - only that it has happened. As I cannot risk trashing the box I thought it would be a good idea. Mike - those gauges surely are purdy, but one gauge would represent 15% of the truck's value!!! Besides, it would be abit like putting a gold tooth on a rat TBH. Quote Link to comment Share on other sites More sharing options...
GBMUD Posted October 15, 2008 Share Posted October 15, 2008 the LR warning method is just a light. I get no indication of impending doom - only that it has happened. Bish, the gear oil temperature warning light is there as a warning - a little like the oil pressure light, the charge light, brake pad warning light or the fuel light - it comes on to warn of a problem, not to tell you that you had better buy the Autotrader on the way home. If you want extra gauges then fair enough, but I agree with Tim, it is not needed. Chris Quote Link to comment Share on other sites More sharing options...
Turbocharger Posted October 15, 2008 Share Posted October 15, 2008 There's a light? Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted October 15, 2008 Share Posted October 15, 2008 It's the one with the cog and the '!' isn't it? Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted October 15, 2008 Share Posted October 15, 2008 Thought it looked morelike a thermometer tbh... but I might be wrong.... It's the one that comes on with the handbrake warning light -at least on my current Rangie -my old one didn't for whatever reason Quote Link to comment Share on other sites More sharing options...
Turbocharger Posted October 15, 2008 Share Posted October 15, 2008 Any idea where the pinout would be on the box? Mine's retrofitted into an early Ninety and I've no temperature monitoring at all. Bish's temperature sender idea had occurred to me, but that's as far as I'd got. So far - no problems. Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted October 15, 2008 Share Posted October 15, 2008 Err Mr Turbocharger - what exactly is your problem? I don't really understand what you are meaning? Quote Link to comment Share on other sites More sharing options...
bishbosh Posted October 15, 2008 Author Share Posted October 15, 2008 John, The sender for the autobox on RRC and Disco I is in one of the oil lines just before the cooler. I expect when your chap did yours he omitted it. I have wired the sender to a spare warning light in the defender dash - I think it is the warning for the cab being tilted up (preumably for a forward control or Llama?) Not the right symbol, but I know what it means when it lights up! Quote Link to comment Share on other sites More sharing options...
Turbocharger Posted October 15, 2008 Share Posted October 15, 2008 This is something I'd not thought about or considered. I'm pretty sure I've got no monitoring at all. As far as I know there's nowhere on the auto cooler lines to mount a sender - I think the hydraulic side is a finely tuned bespoke mix of what he had in the shed at the time. Any idea, diagrams or pictures for where I should be looking? More importantly, how often should I expect to see an overtemp? What can I do about it? ie get into 4th with the t/c locked and drive, or slow down (less power dissipation) / speed up (more air flow) / stop altogether and wait for cooler times? I might work a little harder to put a sender in although my water temp's playing up too... In fact, the rev counter under-reads, the speedo overreads, the turbo gauge sticks - the fuel gauge is the only reliable one! Quote Link to comment Share on other sites More sharing options...
bishbosh Posted October 15, 2008 Author Share Posted October 15, 2008 John, Putting a sender in line is easy - get two female barbed hydraulic fittings for your diameter hose and a long nut. Drill and tap the nut for a sender and splice the lot into the hose that comes out the top of the box. Job done. If you want to take a nose under my bonnet be my guest. I'll be a James' event in two weeks..... Quote Link to comment Share on other sites More sharing options...
Brian Posted September 12, 2010 Share Posted September 12, 2010 I am resurrecting an old thread here, but it shows I did have a search for the info first. I am putting VDO water temp gauges and senders into two V8s, one a 1983 RRC and the other my 1995 Defender. I am trying to find out if the VDO 1/8 NPT sender unit is right for both, or if it needs an adaptor. Can anyone help please ? Quote Link to comment Share on other sites More sharing options...
western Posted September 12, 2010 Share Posted September 12, 2010 don't know what thread a V8 has, but if your Defender is a 200TDi you need a 5/8unf sender or if it's a 300tdi you need a 1/8npt thread sender. Quote Link to comment Share on other sites More sharing options...
Brian Posted September 12, 2010 Share Posted September 12, 2010 Thanks, but my Defender is a V8 too. Still sold here (assembled here too) at that time, with R380 gearbox. Quote Link to comment Share on other sites More sharing options...
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