Biljol Posted July 9 Share Posted July 9 I am wanting to swap my dash gauges but I can not find any details on the ohms rating. The fuel gauge was a snap seem to be a standard. Volts of course was easy. But now I am working on the water temperature gauge. I put the new one in and it’s at 139 should be about 90 air temp. Have not started on the oil pressure or transmission temp yet. Boost should not be an issue as it’s a vacuum line and air is also pressure lines. I have replacement senders but also don’t know where Monaco installed the senders that go to the dash. I have heard of putting resistors or potentiometers in line to adjust the gauges but I am not familiar with doing so. I have a 2000 executive with the ism 500. Any help would be appreciated. I am also working on my j1708 data bus works fine from the engine compartment but the dash port and triptek are bad. Part of the reason I am working on this. Link to comment Share on other sites More sharing options...
Ivan K Posted July 9 Share Posted July 9 (edited) Oil pressure sender and switch is in oil filter mount area, visible and accessible from underneath. Transmission temp sensor is at the hose outlet to cooler, the driveshaft side. Edited July 9 by Ivan K 1 Link to comment Share on other sites More sharing options...
Biljol Posted July 9 Author Share Posted July 9 Ivan thanks for the quick reply. Just to confirm those are for the dash not the ecm? 1 Link to comment Share on other sites More sharing options...
cbr046 Posted July 9 Share Posted July 9 There might be a J1708 plug in the front run bay. Maybe someone with that vintage Exec can chime in. Then you'll just need to run a cable from down under up to the cockpit area. Here's one from Bluefire but it doesn't give the length - https://bluefire-llc.com/store/6-pin-adapter-extension-cable - bob Link to comment Share on other sites More sharing options...
Ivan K Posted July 9 Share Posted July 9 9 minutes ago, Biljol said: Ivan thanks for the quick reply. Just to confirm those are for the dash not the ecm? Correct, for dash gauges only. 1 Link to comment Share on other sites More sharing options...
Biljol Posted July 9 Author Share Posted July 9 Unfortunately there is not one in the front run bay. Link to comment Share on other sites More sharing options...
Ivan K Posted July 9 Share Posted July 9 I have 2 identical 6 pin connectors under the dash, engine and abs. One different one for tranny. The pinout is simple but I would check for power in the connector first, I have a fuse for it in FRB. Link to comment Share on other sites More sharing options...
Biljol Posted July 9 Author Share Posted July 9 Yes, I confirmed power and can actually see data on the network with a multimeter, but I think there is a bunch of noise on the bus causing the Bluefire to not read. It worked on my last trip to CA but not back. My rig is in the shop right now doing a valve adjustment once that's done, I plan on digging in more. Was looking at running new wires back to from but that stuff is $$ Link to comment Share on other sites More sharing options...
Biljol Posted July 10 Author Share Posted July 10 Does anyone know where the water temp sensor is at the one on the front of the engine “back for our coaches” does not run my gauge Link to comment Share on other sites More sharing options...
Ivan K Posted July 10 Share Posted July 10 Have you looked at the one forward of coolant filter? It has a silicon hose shield on it. Link to comment Share on other sites More sharing options...
Tdkkart Posted July 10 Share Posted July 10 1 hour ago, Biljol said: Does anyone know where the water temp sensor is at the one on the front of the engine “back for our coaches” does not run my gauge My 95 Dynasty's 8.3L has the coolant temp sensor on a manifold arrangement mounted to the cylinder head on the transmission end of the engine. I too would like to know what the factory sender ohms are, my original was open, read 0 all the time, replaced it and now the gauge runs +30* higher than a temp gun reads the thermostat housing. which reads approx. 180*. Don't suppose we can find a mechanical gauge with a 40ft capillary tube? Link to comment Share on other sites More sharing options...
Ivan K Posted July 10 Share Posted July 10 (edited) Accordingto my manual, a temp sender for my dash gauge with ISM is in the following picture. However, that number does not exist. I suppose it is either 323-098 or 323-099 and should be engraved on it but I am not removing it until/if necessary, it is well below coolant level and in a miserable place, picture with turbo removed. Edited July 10 by Ivan K Link to comment Share on other sites More sharing options...
Biljol Posted July 10 Author Share Posted July 10 Well that would really suck ----- and I see one item does the temp and the warning light. my new sender does not. Is this a situation that the sender cannot be removed unless the turbo is removed? Maybe there is a different spot it can go? What filter is that below it on the right hand side --- at least it looks like a filter? Link to comment Share on other sites More sharing options...
Ivan K Posted July 10 Share Posted July 10 You should be able to get to the sender from underneath, it is just a little higher than coolant filter in the picture. Link to comment Share on other sites More sharing options...
Biljol Posted July 11 Author Share Posted July 11 (edited) Ok thanks. I did not even know there was a coolant filter. I am new to this big diesel stuff. Luckily I have others doing this work. It is currently getting the top rocker , coolant replacement, oil change, transmission service, airbag adjustment and a replacement steering box. Thought if I was going to fix the dash now was the time. The replacement senders don’t have the idiot light side but I believe a good gauge is better than a light that might not even work anymore. We are taking a trip from Phx to WDW if we take I 10 back I need to stop and buy you a beverage.. I still need to figure out the j1708 can buss issue. Was planning on running new wire from the back to front but that wire is pricey. Edited July 11 by Biljol 1 Link to comment Share on other sites More sharing options...
Biljol Posted July 23 Author Share Posted July 23 Ok so have most gauges replaced now and the ecm is still reading the factory senders whoopee!!! There is about a 10deg difference but I am sure that’s due to the 40’ long wire run from the back to the front I don’t think the 10deg will hurt if off a bit. Better than the 20deg drop when turning on lights before. Oddly the oil pressure is reading spot on. I am getting a check gauges warning I believe because the water sender I put in does not have a dummy light lead. So need to figure that out. Still having issues with the fuel gauge and it is not reporting to my triptek also going to track that down soon. Link to comment Share on other sites More sharing options...
Ivan K Posted July 23 Share Posted July 23 I had that issue with triptek and fuel level while the gauge was functioning fine. Behind the dash is a yellow splice that forks the sensor signal to triptek and the crimp was bad. No problem since then. Link to comment Share on other sites More sharing options...
Biljol Posted July 23 Author Share Posted July 23 (edited) Ah ok will look possible I spliced for the new gauge prior to the Y. Are there any splices that are good anymore? 🙂 Edited July 23 by Biljol Link to comment Share on other sites More sharing options...
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