IanMc Posted February 3, 2018 Share Posted February 3, 2018 Can any of you helpful people please direct me to the location of the oil pressure sensor/sender? My gauge goes to max as soon as you turn the key. I have read that this is normally caused by the wires being burned/melted together due to heat from the exhaust manifold I have read that it can be spotted when looking up from under the area of the exhaust downpipes, but I didn't notice it. All help appreciated. Quote Link to comment Share on other sites More sharing options...
cam.in.head Posted February 3, 2018 Share Posted February 3, 2018 Hi ian.me again !. Its at the side of the engine by the back just undernesth the exhaust manifold.two wires go to it and yes they usually get melted by the hest from the exhaust or the connectors on the end get brittle with the heat.very hard to reach with the exhaust on but possible also worth a wiggle to see if theyre just loose.if you get round to taking off the exhaust thats always a good time to check and replace these wires and connections.removing the sender to clean terminals. Quote Link to comment Share on other sites More sharing options...
IanMc Posted February 3, 2018 Author Share Posted February 3, 2018 Thanks Chris, as always you provide accurate and fast information. Is it only accessible from below when the exhaust is fitted? Quote Link to comment Share on other sites More sharing options...
cam.in.head Posted February 3, 2018 Share Posted February 3, 2018 to be honest its a sod to reach from either way but i think with the exhaust on it will be easier from the top. i replaced(again) the wires to mine last year from the top.one was a regular spade and the other was a ring lug. managed it but with some grazed skin!.one wire operates the normal oil light and the other the guage.it will be obvious if theyre the wrong way.if your light works but the guage pops over to max then it will be most probably a loose connection on the sender or broken off. a bad or missing connection makes it shoot to max and a short to eath makes it stay at zero. the sender is mounted on a 90degree elbow .a good torch should show you what you are up against. good luck ian!! Quote Link to comment Share on other sites More sharing options...
wayne ingham Posted February 3, 2018 Share Posted February 3, 2018 It will only take about 1/2 a hour to remove the exhaust manifold (if the bolts come out) Quote Link to comment Share on other sites More sharing options...
IanMc Posted February 3, 2018 Author Share Posted February 3, 2018 Thanks to you both, greatly appreciated. I will have a better look tomorrow and post back. Quote Link to comment Share on other sites More sharing options...
IanMc Posted February 4, 2018 Author Share Posted February 4, 2018 Encouraged by the advice above, I decided that this morning I try to tackle this little job and get the oil pressure gauage working again (instead of just flying round to max as soon as you turn the key). Being a coward, I thought I would start easy and gradually work through things hoping to find something like a broken wire to fix. With all wires present and correct, I turned my attention to the black connector block behind the back of the engine protruding from the loom. Generally the connector was very grotty, so I set above cleaning everything up and popping the terminals out for a good going over with some sandpaper and a liberal spraying with WD40. Imagine my surprise when I turned the key and the needle moved up to the start of the red and sat there with the warning light lit (as it did before). I started the car up and it was working normally! I only ran the car for a few seconds as the garage door was closed, but a couple of quick revs made the gauge needle rise and fall nicely, so all seems to be good. It must be my lucky day! 2 Quote Link to comment Share on other sites More sharing options...
cam.in.head Posted February 4, 2018 Share Posted February 4, 2018 Great news. One more off the list 👍 1 Quote Link to comment Share on other sites More sharing options...
®evo03 Posted February 4, 2018 Share Posted February 4, 2018 Hard to break an old type car, even harder to fix a new car! A new car would involve, computer lap top plug ins, sensors control panels, do new cars even have oil pressure guages?? Do they? 1 Quote Link to comment Share on other sites More sharing options...
wayne ingham Posted February 4, 2018 Share Posted February 4, 2018 I work with new cars that ae a nightmare,and the owners are.The world falls apart went it’s not fix on the same day 1 Quote Link to comment Share on other sites More sharing options...
andyc Posted February 8, 2018 Share Posted February 8, 2018 Last time i removed an OP switch i pulled the manifold way from the head a used a long 3/8 extension to go down between the manifold and had with a 19mm crows foot spanner on the end, worked a treat Andy 1 Quote Link to comment Share on other sites More sharing options...
IanMc Posted February 8, 2018 Author Share Posted February 8, 2018 Great tip, thanks Andy. Quote Link to comment Share on other sites More sharing options...
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