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Old 02-07-2019, 10:46 AM   #16
Adam704
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Default Re: Testing the Fuel Gauge

I will keep this old thread going and hope for a response.

As for a new CVR, this is the one I may be buying that is better than the old. xxxx

On my gauges, my fuel meter will not go past 1/2 full and the tank is 1/2 full when the gauge hits E. This presents the issue of me having to do math and fill up around the 120 mile mark (only getting 7.2 mpg ouch). Would I have a CVR problem with the fuel gauge? My alternator meter works fine, my oil pressure works fine i think, but no temp gauge does not work at all.
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Last edited by Scoutboy74; 02-07-2019 at 11:02 AM.. Reason: deleted reference to competing vendor
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Old 02-07-2019, 11:11 AM   #17
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Default Re: Testing the Fuel Gauge

I edited your post to remove the reference to a competing vendor. IH Parts America owns and maintains this tech forum and uses it to help generate sales for their business. New forum members are often unaware of this fact until an event like this occurs.
As has already been explained in this thread, the CVR effects the OIL, TEMP and FUEL gauges only. If any one of these three gauges is working properly, then the CVR is good. If none of those three are working, it could be the CVR, or it could be other issues. The CVR has no influence on the Ammeter/Alternator gauge or the speedometer. The OIL gauge working fine in your case strongly suggests that this is NOT a CVR issue. The incorrect Fuel gauge readout is also NOT indicative of a CVR issue. The Temp gauge not working is most likely an issue with the sender, the gauge itself, or the wire running in between the two.
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Coal Trickle - '99 Dodge Ram SLT 2500 Q-Cab SWB 4x4 - 5.9L 24V CTD/NV4500/8800# GVWR/12K# winch
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Old 02-07-2019, 11:19 AM   #18
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Default Re: Testing the Fuel Gauge

Thanks for the reply, I will do my best to track down that the fuel issue is. Also thanks for the heads up on the competing vendor.
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Old 02-07-2019, 12:02 PM   #19
Scoutboy74
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Default Re: Testing the Fuel Gauge

On your fuel economy figures, are those based on GPS measured miles or known distance measured? In other words, I wouldn't be relying solely on the odometer for accurate distance measurement, especially if you're running larger than stock tire size, as that will throw it off quite a bit. You could actually be logging more miles than what your odometer is telling you.
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Favorite hobby...Driving Salma Hayek in my Scout

Coal Trickle - '99 Dodge Ram SLT 2500 Q-Cab SWB 4x4 - 5.9L 24V CTD/NV4500/8800# GVWR/12K# winch
Hooty - '74 SII 4x4 - 392/TF727/D20/3.73 D44's/Spartan FA/Krac-lok RA/RC 4" SUA/34x11.5 TSLs/33g Fuel/8K# winch
Lemuel - '73 1210 Reg Cab 4x4 Camper Special - 304/TF727/NP205/4.09 FA25 & 4.10 RA16 - "Pull Lemuel, pull!"
Mongo - '71 1210 Reg Cab 2WD - 345/TF727/4.10 RA17 - "Mongo love candy! Duh, huh, huh!"
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Old 02-07-2019, 12:06 PM   #20
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Default Re: Testing the Fuel Gauge

I hadn't thought of that. I was running based on the odometer readings. I am running 31's
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Old 02-07-2019, 12:16 PM   #21
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Default Re: Testing the Fuel Gauge

Yeah, the stock tire size was something like 27 or 28" diameter, so that's quite a change. The speedo adapter mounted to your t-case where the speedo cable is attached was calibrated to make your speedo and odo accurate with your stock tire size and installed axle gear ratio. You make changes to tire size and/or axle gearing, and the speedo readout isn't going to change in kind. Now, you're not going to see your MPG double when you do take this change into account, but the actual number should be a bit easier to swallow.
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Favorite hobby...Driving Salma Hayek in my Scout

Coal Trickle - '99 Dodge Ram SLT 2500 Q-Cab SWB 4x4 - 5.9L 24V CTD/NV4500/8800# GVWR/12K# winch
Hooty - '74 SII 4x4 - 392/TF727/D20/3.73 D44's/Spartan FA/Krac-lok RA/RC 4" SUA/34x11.5 TSLs/33g Fuel/8K# winch
Lemuel - '73 1210 Reg Cab 4x4 Camper Special - 304/TF727/NP205/4.09 FA25 & 4.10 RA16 - "Pull Lemuel, pull!"
Mongo - '71 1210 Reg Cab 2WD - 345/TF727/4.10 RA17 - "Mongo love candy! Duh, huh, huh!"
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