Temp Gauge
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Joined: Sep 2012
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Temp Gauge
Hey guys,
So I recently did a DuraSpark conversion on my truck, runs so much better now, too, but the temperature gauge connector is different on the DuraSpark wiring harness than the ECT sensor I currently have in there. I've tried just wiring it to the sensor and then grounding the sensor since the plug only has 1 wire, but that didn't seem to work. I'm guessing that the ECT that I have in there currently for the EEC IV system has different resistance values. I also know the gauge works because if I ground it directly, the needle moves over to the "H".
But that's not really my question. My question is I'm only getting about 11MPG in the truck and I'm wondering if that has anything to do with the non working ECT. I know I won't be getting great gas milage since I still have the old Feedback Carb on the truck (haven't been able to find a non-feedback at a junkyard and can't afford a new one) but I was just wondering what might be causing the bad mileage.
Note: I have new spark plugs, new wires and a new cap and rotor, working on getting a new coil as well.
Thanks for the help!
So I recently did a DuraSpark conversion on my truck, runs so much better now, too, but the temperature gauge connector is different on the DuraSpark wiring harness than the ECT sensor I currently have in there. I've tried just wiring it to the sensor and then grounding the sensor since the plug only has 1 wire, but that didn't seem to work. I'm guessing that the ECT that I have in there currently for the EEC IV system has different resistance values. I also know the gauge works because if I ground it directly, the needle moves over to the "H".
But that's not really my question. My question is I'm only getting about 11MPG in the truck and I'm wondering if that has anything to do with the non working ECT. I know I won't be getting great gas milage since I still have the old Feedback Carb on the truck (haven't been able to find a non-feedback at a junkyard and can't afford a new one) but I was just wondering what might be causing the bad mileage.
Note: I have new spark plugs, new wires and a new cap and rotor, working on getting a new coil as well.
Thanks for the help!
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
We need to know a lot more to be able to diagnose the problem - assuming there is a problem. Like the year, the engine, the model (F100 - F350), what transmission, what axle ratio, how you drive it to get that MPG, and what you've done to it. For instance, if its an F350 with a 300 turning 3.00 gears through 35" tires and you drive 70 MPH then 11 MPG isn't too bad.
And you said you did a "Duraspark conversion". You converted from points to Duraspark? Or do you mean you converted from DS-III to DS-II? If so, what did you replace?
I don't want to sound condescending, but you cannot make vague statements like that with no supporting detail and expect us to be able to give you reasonable suggestions.
And you said you did a "Duraspark conversion". You converted from points to Duraspark? Or do you mean you converted from DS-III to DS-II? If so, what did you replace?
I don't want to sound condescending, but you cannot make vague statements like that with no supporting detail and expect us to be able to give you reasonable suggestions.
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
You are confusing the temperature SENSOR (multiple electrical connections, generally mounted on the thermostat housing, and is used by the computer) with the dash gauge SENDER which has only one connection and a single wire - red/white or white/red, I forget which but the other one goes to the oil pressure gauge SENDER.
Two different devices used for two different purposes.
Two different devices used for two different purposes.
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