Fatboy Posted February 8, 2013 Share Posted February 8, 2013 Hi all, After a hectic few weeks in everything but the wagon, I've managed to get back into the swing of it and am trying to remember where I was!! One of my problems is trying to figure out how to get water temp on a gauge because the original sender is now hooked into the Megasquirt... Any ideas? Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted February 9, 2013 Share Posted February 9, 2013 The V8 EFI has one sender, and one sensor, for gauge and ECU respectively, have you connected the right one to the ECU? Quote Link to comment Share on other sites More sharing options...
Fatboy Posted February 9, 2013 Author Share Posted February 9, 2013 Hmm... Good point. I'm transplanting the 4.6 into an ex-200tdi 110 so have built the engine from bits. I've only seen the one sensor in the water though. Best I get the manual out to try and find the other! Ta, Donald Quote Link to comment Share on other sites More sharing options...
mikec Posted February 9, 2013 Share Posted February 9, 2013 One in the inlet manifold and the others in the timing cover Quote Link to comment Share on other sites More sharing options...
Fatboy Posted February 10, 2013 Author Share Posted February 10, 2013 There is none on the timing cover of my GEMS engine. There is one on the top hose housing which I've connected to Megasquirt. The other one is on the water way in the inlet manifold that heads towards No. 1. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted February 10, 2013 Share Posted February 10, 2013 Inlet manifold going to cylinder #1 is the sensor for the ECU. The one on the thermostat housing, I think this is what you mean... is actually the AC fan switch. Not entirely sure what you mean by 'top hose housing' though. The sensor is the RH #2 on this pic: http://club.triumph.org.uk/cgi-bin/forum10/Blah.pl?m-1354828547/ Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted February 10, 2013 Share Posted February 10, 2013 Timing Cover is an oil pressure sensor Quote Link to comment Share on other sites More sharing options...
Fatboy Posted February 10, 2013 Author Share Posted February 10, 2013 Bowie, Thanks, I'll swap the MS plug to the one on #1. I called the other one the top hose housing coz I figured someone would point out the thermostat is in the hose... I suspect I'll have to put an aftermarket gauge on with the sensor in place of the AC fan switch because there are no other senders in the water system that I can find. Quote Link to comment Share on other sites More sharing options...
mikec Posted February 10, 2013 Share Posted February 10, 2013 Timing Cover is an oil pressure sensor Yep I got mixed up there Quote Link to comment Share on other sites More sharing options...
need4speed Posted February 11, 2013 Share Posted February 11, 2013 On my inlet manifold there are 2 threded holes next to each other. I thought they were temp sensor/sender holes?? Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted February 11, 2013 Share Posted February 11, 2013 er Thats not a flapper Manifold is it ? if so then thats for the thermotime unit, the one with 2 pins is the CTS Sensor Other wise I am unsure WTF exactly that other hole is for at the mo, but partly due to me having man Flue on the way I fink Nige Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted February 11, 2013 Share Posted February 11, 2013 Ah No, hang on ! I think thats for a sensor that has a Bullet type connector (male) that sticks up, and npope its gone again as to what its for Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted February 11, 2013 Share Posted February 11, 2013 PPS VERY uncomfortable about those allen blink bolts holding the head down, are they stainless ? ? Quote Link to comment Share on other sites More sharing options...
need4speed Posted February 11, 2013 Share Posted February 11, 2013 Bloody 'ell Nige. You feelin alright I hope its a hotwire manifold......you told me it was! lol. It came with hotwire injection stuff bolted to it so hope so. You've got me doubting now. How do i tell. Yea its stainless allen bolts holding the inlet manifold on. Is this a bad idea? Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted February 11, 2013 Share Posted February 11, 2013 YES VERY BAD Stainless has a lower Structural strength than Steel bolts that are in there !Change them for proper LR Bolts and washers or the Equivalent, they also are NOT all the same lengths Dome Head Allen bolts in stainless is a No No Yes, its hotwire No I am still unsure what that hole is, will try and look tomm !!Gurgle ....Nightnurse and scotch coming up - or is that down Nige Quote Link to comment Share on other sites More sharing options...
need4speed Posted February 11, 2013 Share Posted February 11, 2013 I would never use stainless on suspension mounts, props etc but figured they would be ok on the manifold. I will swap them out for genuine though. Oh and depending how much nightnurse you take with that malt, maybe down then up Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted February 11, 2013 Share Posted February 11, 2013 On my inlet manifold there are 2 threded holes next to each other. I thought they were temp sensor/sender holes??Inlet.jpg Yes, they are. CTS and Temp gauge sender. Quote Link to comment Share on other sites More sharing options...
mikec Posted February 11, 2013 Share Posted February 11, 2013 Have you tried googling that part number on it? Might say what it's for? Quote Link to comment Share on other sites More sharing options...
Fatboy Posted February 11, 2013 Author Share Posted February 11, 2013 I've got a sender in one and a stumpy little plug in the other. The little pipe is hooked into the plenum chamber via a rubber hose. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted February 13, 2013 Share Posted February 13, 2013 Those bolts are a poor idea for several reasons; stainless is brittle, stainless will encourage galvanic corrosion, and the domed allen-head only gives you one shot at undoing it, god help you if it rounds off. I never understand fitting stainless bolts to land rovers, it just means the bolts will stay shiny while the big bits dissolve around them even faster! Back on temp sensors; Flapper has: ECU Coolant temp sensor (plastic top, 2-pins), theromtime switch (brass, 2-pins) and gauge sender (1-pin) Hotwire has: ECU Coolant temp sensor (plastic top, 2-pins), gauge sender (1-pin) Later ones will have the ECU coolant sensor, may not have a separate gauge one (RAVE will tell you). Quote Link to comment Share on other sites More sharing options...
elbekko Posted February 13, 2013 Share Posted February 13, 2013 My Bosch 4.6 has one temp sensor with two outputs on the lower intake manifold. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted February 13, 2013 Share Posted February 13, 2013 RAVE Manual says: Engine Coolant Temperature (ECT) sensor - (up to 99MY)The sensor is located at the top front of the engine, to the right of the alternator and in front of the plenum chamber.The sensor comprises a temperature dependant resistive metal strip. The resistance of the strip varies considerably with coolant temperature, i.e. from 28K ohms at - 30°C to 90 ohms at 130°C. At 85°C the resistance is 300 ohms. And: Engine Coolant Temperature (ECT) sensor - (from 99MY)The ECT sensor is located at the top front of the engine, adjacent to the coolant outlet pipe. The sensor screws into a thread in the inlet manifold and incorporates a sealing ring between the faces of the sensor and manifold.The ECT sensor multiplug has four wires; two are the signal and ground connections used by the ECM, the other two are used by the body control module (BeCM) for control of the temperature warning lamp operation on the instrument pack.The sensor contains two thermistors with negative temperature co-efficients; as temperature increases, the thermistor’s resistance decreases. The ECM receives a corresponding analogue input voltage between 0 and 5V.NOTE: The temperature / resistance characteristics of the two thermistors differ, and so it is important to maintain the correct pin-outs. The ECM uses the information received from the ECT sensor to make adjustments to the engine operating conditions. The ECM ensures a richer air:fuel mixture is available at lower block temperatures for good quality starts and smooth running. The mixture is then made leaner as the engine temperature rises to maintain low emissions and good performance. Quote Link to comment Share on other sites More sharing options...
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