TS888 Posted May 27, 2011 Share Posted May 27, 2011 Can anyone confirm P/N PRC4043 is the correct sender for the factory oil pressure gauge? I tried searching, but have had no luck finding a P/N. I came up with that one from the Microcat and various parts seller websites, but I can't find a conclusive reference to the 300TDi. Many thanks! Quote Link to comment Share on other sites More sharing options...
western Posted May 27, 2011 Share Posted May 27, 2011 PRC4043 is for all 2.5 engines including 200tdi but NOT 300Tdi, there isn't one listed, mine is more square shouldered than the one on here it should be possible to fit one but I don't know the thread type/size for it or the oil pressure warning light switch hole on the 300Tdi filter head.you'd need an adaptor to make it fit. microcat says oil gauges [pressure & temp] are for vehicle up to chassis LA939975 which was the last of the 200Tdi vehicles. Quote Link to comment Share on other sites More sharing options...
TS888 Posted May 27, 2011 Author Share Posted May 27, 2011 Well, fudge. I suppose the gauge originated in a 200TDi vehicle then. I'd think the sender would work, as you say just need an appropriate adapter, and I suppose a T to keep the warning light sender. Thanks! Quote Link to comment Share on other sites More sharing options...
western Posted May 27, 2011 Share Posted May 27, 2011 these are the parts to add oil pressure & temp gauges to a TD & 200Tdi, the adaptor might work on your 300Tdi [refer to my handwritten part numbers on the attached diagram] oil pressure gauge trnamitter fittings.pdf Quote Link to comment Share on other sites More sharing options...
TS888 Posted May 28, 2011 Author Share Posted May 28, 2011 Brilliant, many thanks Western! Quote Link to comment Share on other sites More sharing options...
Frax Posted July 13, 2011 Share Posted July 13, 2011 Hi TS888 I was watching your thread and just wondered if you had any update. Did the parts that Western listed fit ?. Would like to do this job also so any update would be great. Regards Frax Quote Link to comment Share on other sites More sharing options...
western Posted July 13, 2011 Share Posted July 13, 2011 for a 300tdi I would go straight for a VDO 52mm oil pressure gauge & matching sender from somewhere like Merlin Motorsport based at Castle Coombe circuit near Chippenham, Wiltshire. Quote Link to comment Share on other sites More sharing options...
Frax Posted July 13, 2011 Share Posted July 13, 2011 Thanks for that Ralf - not a bad price. Was wondering about the fittings and if the parts for the 200tdi fit the 300tdi. Regards Frax Quote Link to comment Share on other sites More sharing options...
western Posted July 13, 2011 Share Posted July 13, 2011 300 has a different oil filter head, not sure if the genuine bits I used will fit, they are actually meant for the pre-Tdi 4 cylinder engines, but the 200tdi oil filter head is a common part with the older 4 cyl engines, I found the numbers on the TD & n/a diesel oil filter head pages in my 110 parts book. Quote Link to comment Share on other sites More sharing options...
Frax Posted July 14, 2011 Share Posted July 14, 2011 Getting there Ralf. Removed the oil pressure switch today and after hunting about to see if I had anything to match the thread I found that it is the same thread a brake pipe. That’s the one that slides over the brake pipe and into the calliper. I could use a brass tee like the one on the back axial but knowing my luck it would tighten up in the wrong position, I would rather do as you did with a banjo fitting. I know that you will be able to tell me the thread of the top of your head ( I hope) and then it should be just a case of ordering the parts. Did thing of fitting it a bit away from the filter using brake pipe and securing the tee to something but have changed my mind as no where close to fit it and I don’t want to restrict the flow. Regards Frax Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted July 14, 2011 Share Posted July 14, 2011 Brake pipes are M10x1 if metric, or 3/8 UNF if imperial. Being a 300TDI, if the brake fittings you have were destined for that, they will be metric. Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted July 14, 2011 Share Posted July 14, 2011 Any 90 /110 should be metric, LR changed over at the end of the series 3. I have imperial rear calipers on the imperial RR rear axle I fitted, so I found out about brake pipe fittings threads the hard way Mo Quote Link to comment Share on other sites More sharing options...
Dads Toy Posted July 14, 2011 Share Posted July 14, 2011 I've just done this. The thread is M10x1 and the problem is getting it all to fit around the oil filter housing. As you say a "T" piece won't necessarily line up. I bought a sender that had 2 contacts, 1 for the gauge and the other is a low pressure warning light sender ( expensive). The difficulty with this sender is that when you tighten it up, it fouls the housing because of it's size and won't tighten completely so I bought an adaptor that is meant to screw into the housing and has a threaded hole for a low pressure switch. This is long enough to avoid the sender fouling and I just put an M10 bolt into the other hole. This is what I mean Malcolm Quote Link to comment Share on other sites More sharing options...
western Posted July 14, 2011 Share Posted July 14, 2011 Getting there Ralf. Removed the oil pressure switch today and after hunting about to see if I had anything to match the thread I found that it is the same thread a brake pipe. That’s the one that slides over the brake pipe and into the calliper. I could use a brass tee like the one on the back axial but knowing my luck it would tighten up in the wrong position, I would rather do as you did with a banjo fitting. I know that you will be able to tell me the thread of the top of your head ( I hope) and then it should be just a case of ordering the parts. Did thing of fitting it a bit away from the filter using brake pipe and securing the tee to something but have changed my mind as no where close to fit it and I don’t want to restrict the flow. Regards Frax Sorry I don't know what the thread type or size is, looks like the solution below by Dads Toy would be the easiest way to go. Quote Link to comment Share on other sites More sharing options...
Frax Posted July 14, 2011 Share Posted July 14, 2011 Thank you for all that, I now know what I need to do to get there. Now to hunt down some fittings. Regards Frax Quote Link to comment Share on other sites More sharing options...
Dads Toy Posted July 14, 2011 Share Posted July 14, 2011 Demon Tweeks have a good selection of adaptors. The gauge and sender I got were VDO one's from here Malcolm Quote Link to comment Share on other sites More sharing options...
Frax Posted July 14, 2011 Share Posted July 14, 2011 Thanks Malcolm Adaptor ordered. Frax Quote Link to comment Share on other sites More sharing options...
Frax Posted July 19, 2011 Share Posted July 19, 2011 And fitted. Regards and thank you for all the help. Frax Quote Link to comment Share on other sites More sharing options...
western Posted July 19, 2011 Share Posted July 19, 2011 good to see you found a suitable adaptor, use a fuly insulated blue cover 15amp female spade terminal on your wire. Quote Link to comment Share on other sites More sharing options...
Frax Posted July 19, 2011 Share Posted July 19, 2011 Have done Ralf and ran it up the oil pressure switch wire and along the loom. Was able to squeeze it through the large gromit with the rest of the loom. Just need to finish the rest of my dash now and fit the VDO Gauge. Regards Frax Quote Link to comment Share on other sites More sharing options...
western Posted July 19, 2011 Share Posted July 19, 2011 make a note of the route & wire colour in your workshop records & wiring diagrams to, one day you'll be glad you did. Quote Link to comment Share on other sites More sharing options...
Frax Posted July 19, 2011 Share Posted July 19, 2011 I can see how that would help after looking at some of yours. Really glad you kept all your info, it has been of great help to loads of us. It is so easy to rush through it all and think you will remember, a few years down the line and you have the enevitable problem and you cant remember what you had for dinner last night. Thanks again. Frax Quote Link to comment Share on other sites More sharing options...
western Posted July 20, 2011 Share Posted July 20, 2011 your welcome, the extra info/wiring sheets are kept with my workshop manual, so I should be able to find them when required. Quote Link to comment Share on other sites More sharing options...
slihp Posted July 21, 2011 Share Posted July 21, 2011 Demon Tweeks have a good selection of adaptors. The gauge and sender I got were VDO one's from here Malcolm was it this one you got D Toy? if so how dose the warning switch hook up? Quote Link to comment Share on other sites More sharing options...
Dads Toy Posted July 21, 2011 Share Posted July 21, 2011 If I remember, I rang them up to get one that had M10 x 1 thread and also read 0-5bar. The 300Tdi normal oil pressure range is 1.7 - 3.8 bar (25 - 55psi)so with a big scale you'll hardly see the needle move. With the 2 terminal sender it's simply a case of connecting the wire you take off your original warning light sender and screwing it onto the WK terminal on the sender the other, marked G, unsurprisingly connects to the gauge. The picture in my earlier post only shows 1 wire as the other terminal is hidden by the pipe. hth Malcolm Quote Link to comment Share on other sites More sharing options...
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