Guest Marcel B Posted November 12, 2008 Report Share Posted November 12, 2008 HI Ray , can I connect my fuel level sender (ohms) to the V88 through an analog input (of course) ? will it read fuel level :?: Quote Link to comment Share on other sites More sharing options...
ashesman Posted November 13, 2008 Report Share Posted November 13, 2008 Here would be the best way to measure fuel level using a variable resistance sensor: - Wire a pullup resistor to the sensor. Between ECU +5V Out and one side of the fixed resistance part of the sensor. - Ground the other side of the fixed resistance to the ECU's sensor ground. - Wire the variable resistance pin of the sensor to an ECU analog input. - Set the input as GP Input. - Select custom calibration 1 to 3. - Set the custom calibrations input units to Volts and output units to % - Set Output Table Start to 0 and Output Table Increments to 10. - Put 0.0 in the tables first cell. - Put 5.0 in the tables 100% cell and every cell above that - Fill in the numbers between to get the correct % reading for different fuel levels Quote Link to comment Share on other sites More sharing options...
Guest Marcel B Posted November 13, 2008 Report Share Posted November 13, 2008 Cool , that seems very doable ......., but I am fresh out of cal tables :mrgreen: I think I may have to do some rearrangeing :geek: Quote Link to comment Share on other sites More sharing options...
Guest Marcel B Posted November 13, 2008 Report Share Posted November 13, 2008 Coming to think of it , I can wire the sensor directly to my AIM dash , thanks again. Quote Link to comment Share on other sites More sharing options...
Guest |198| Posted November 15, 2008 Report Share Posted November 15, 2008 What AIM dash are you running? I want to run the new Strada with my V88. But they told me they are still working on the code for it..... Quote Link to comment Share on other sites More sharing options...
Guest Marcel B Posted November 15, 2008 Report Share Posted November 15, 2008 I have the MXL strada , here is an early pic when I first started the install I am patiently waiting on AIM to get it done :!: Quote Link to comment Share on other sites More sharing options...
Guest Marcel B Posted November 15, 2008 Report Share Posted November 15, 2008 Here would be the best way to measure fuel level using a variable resistance sensor: - Wire a pullup resistor to the sensor. Between ECU +5V Out and one side of the fixed resistance part of the sensor. - Ground the other side of the fixed resistance to the ECU's sensor ground. - Wire the variable resistance pin of the sensor to an ECU analog input. - Set the input as GP Input. - Select custom calibration 1 to 3. - Set the custom calibrations input units to Volts and output units to % - Set Output Table Start to 0 and Output Table Increments to 10. - Put 0.0 in the tables first cell. - Put 5.0 in the tables 100% cell and every cell above that - Fill in the numbers between to get the correct % reading for different fuel levels The stock fuel level sender only has one pin ! The sender it self is grounded to the tank , so a fuel level gauge would be looking at change in resistance to ground . I dont think the V88 can measure this :cry: Quote Link to comment Share on other sites More sharing options...
Guest Marcel B Posted December 3, 2008 Report Share Posted December 3, 2008 Ray can you build an adapter box that would allow this to work ? Quote Link to comment Share on other sites More sharing options...
rayhall Posted December 3, 2008 Report Share Posted December 3, 2008 Marcell, By adding a pullup resistor to that wire, the V88 will be able to read a voltage value based on the fuel level. The fact the other side of the sensor is going to chassis ground will not be a problem, as you will be scaling the sensor in so it reads correct. Quote Link to comment Share on other sites More sharing options...
Guest Marcel B Posted December 4, 2008 Report Share Posted December 4, 2008 The stock fuel level sender only has one pin ! The sender it self is grounded to the tank , so a fuel level gauge would be looking at change in resistance to ground . I dont think the V88 can measure this :cry: So are you agreeing with ashesman that this would be the way to wire it up ? can you please post a wireing diagram ? Quote Link to comment Share on other sites More sharing options...
rayhall Posted December 4, 2008 Report Share Posted December 4, 2008 Yes I am agreeing with ashman. This is the setup... Quote Link to comment Share on other sites More sharing options...
Guest |201| Posted December 4, 2008 Report Share Posted December 4, 2008 That's great news and will save the people wanting to run the Racepak IQ3 dash $$. No need for the Vnet cable and USM module now if this works. Let us know how this works out when you do it Marcel B. Jeremy Quote Link to comment Share on other sites More sharing options...
Guest Marcel B Posted December 4, 2008 Report Share Posted December 4, 2008 Thanks Ray , but would I also need a cal table to use this ? I hope not . because I am out of cal tables !!!! JeremyN , I'll be sure to post my results. Quote Link to comment Share on other sites More sharing options...
rayhall Posted December 4, 2008 Report Share Posted December 4, 2008 Thanks Ray , but would I also need a cal table to use this ? I hope not . because I am out of cal tables !!!! If the fuel sensor signal is linear in relation to the amount of fuel in the tank, then you can use Cal 5, 6 or 7. Quote Link to comment Share on other sites More sharing options...
Guest Marcel B Posted December 4, 2008 Report Share Posted December 4, 2008 Yep , but CAL 5,6 and 7 are already in use ....no worries I have two flow sensors on each of my water injection stages , I can share this table with the fuel level sender , since I changed the units for the WI sensors from 0-5V = 0 -2000% (no cc's available) to 0-5V = 0 -100% . I think however , you all need to include a couple more cal tables to compliment the number of AN inputs provided Quote Link to comment Share on other sites More sharing options...
Guest |201| Posted December 5, 2008 Report Share Posted December 5, 2008 Yep , but CAL 5,6 and 7 are already in use ....no worries I have two flow sensors on each of my water injection stages , I can share this table with the fuel level sender , since I changed the units for the WI sensors from 0-5V = 0 -2000% (no cc's available) to 0-5V = 0 -100% . I think however , you all need to include a couple more cal tables to compliment the number of AN inputs provided Cant you send me the info on the flow sensors for the Water injection? [email protected] Thx Jeremy Quote Link to comment Share on other sites More sharing options...
Guest Marcel B Posted December 6, 2008 Report Share Posted December 6, 2008 Sure they are from AQUAMIST , part # 806 428 , http://www.aquamist.co.uk/sl/plist/frm-4-USD.html . I got the guy , richard lamb to custom make a pair with the pot built in . Quote Link to comment Share on other sites More sharing options...
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