rockfangd Posted August 18, 2006 Report Share Posted August 18, 2006 heres the thing. i just swapped out my base cluster on my 94 cutty with the ub3 digital cluster from a 92 cutty. thanks to stockgp. when i took my old cluster out it said i had half a tank of gas. which was correct, when i put in the digital cluster it said half also correct. it worked just like my old cluster so i ran the car till the gauge read e and was flashing low fuel and i just about ran out of gas. so that worked correct, so i adde a few dollars and it read accurate, like a quarter of a tank. onw last thursday i filled the tank full (16.94 gallons tbe) and the gauge read full. correct but now a week later ive gone 89 miles since i filled it it reads full. cant be right. the only thing that comes to mind is that maybe the 92 doesnt have a 16 gallon gas tank so the tank in my 94 is too much for the cluster. i have checked all the connections and it worked fine till i filled it full. help!! lol Quote Link to comment Share on other sites More sharing options...
Slknyk Posted August 18, 2006 Report Share Posted August 18, 2006 I have a 94 Cutlass with analog gauges and, when full, I can go almost 120 miles before my fuel gauge moves at all. Run it a few more miles! Quote Link to comment Share on other sites More sharing options...
Crazy K Posted August 18, 2006 Report Share Posted August 18, 2006 ditto about 90 onb my 93 the semsitivity is kind crap on our units. Mine say 1/2 tank when really at 1/4 but it reaches E when it has 1/8 tank left. check guages light ablaze. Quote Link to comment Share on other sites More sharing options...
Hairdo12 Posted August 18, 2006 Report Share Posted August 18, 2006 On mine in the summer time, miles: 0-110 it reads Full 110 - 175 reads Full - 3/4 175- 250 reads 3/4 - 1/2 250-320 reads 1/2 - 1/4 320- 375 reads 1/8 - Empty Does any one have theirs read 1/8 with the low fuel light on, turn the car off and come back 10 minutes later and turn it on and it reads 1/4+? Mine does that and then falls back down after about 5-6 minutes. In the winter, it actually gives a somewhat accurate reading Quote Link to comment Share on other sites More sharing options...
rockfangd Posted August 19, 2006 Author Report Share Posted August 19, 2006 yeah my analog always did that. so just drive it for a little while ? Quote Link to comment Share on other sites More sharing options...
cutlsp Posted August 19, 2006 Report Share Posted August 19, 2006 strange mine works from the start to the very last drop of gas........aka E Quote Link to comment Share on other sites More sharing options...
lothos Posted August 19, 2006 Report Share Posted August 19, 2006 Yeah. I've noticed this too, thought it was just my car up until now. I upgraded from the analog dash, to the granny dash to the UB3 and they all seem to read full for quite a while. It takes a long time for the gas gauge to start to lower. I've noticed the bottom half of the tank goes a lot faster than the first half of the tank! Quote Link to comment Share on other sites More sharing options...
joey b Posted August 19, 2006 Report Share Posted August 19, 2006 I've noticed that when the first tick goes down you only have 3/4 tank and 1/2 is really 1/4. That's my interpretation of it. Was for my 89 and is for my swapped 92. Quote Link to comment Share on other sites More sharing options...
rockfangd Posted August 19, 2006 Author Report Share Posted August 19, 2006 omg you couldnt have said that better. it stays on full for awhile but when it gets to half i feel like there is a gas leak, the one thing i can say for sure is that e means im still screwed. lol Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted August 19, 2006 Report Share Posted August 19, 2006 Its because your gas tank is 16.5 gallons. If you filled up with 16.94 gallons, your filling the filler neck. It takes time, driving around to burn off that gas thats in the filler neck. Once the gas reached the tank, and you begin to burn that fuel off so that the sender starts to read something and your needle starts to go down, you've driven 100+ miles. Quote Link to comment Share on other sites More sharing options...
rockfangd Posted August 20, 2006 Author Report Share Posted August 20, 2006 yeah but it doesnt make mich sense because according to my math i only get like 20mpg so if i drove 86 miles as of today thats like 4.5 gallons gone. at 86 miles it finally moved from the full mark one line. so confusing. and the filler tank only holds .44 gal. it shouldve burned that really quick. :willynilly: Quote Link to comment Share on other sites More sharing options...
supreme_style21 Posted August 20, 2006 Report Share Posted August 20, 2006 My low fuel light comes on around 1/4 tank.. and once it hits the 1/4 tank mark, I've got about 40 miles until its dead. Quote Link to comment Share on other sites More sharing options...
rockfangd Posted August 22, 2006 Author Report Share Posted August 22, 2006 doesnt make much sense to me but does anyone know what the average mpg is on these Quote Link to comment Share on other sites More sharing options...
rockfangd Posted September 6, 2006 Author Report Share Posted September 6, 2006 anyone?? lol Quote Link to comment Share on other sites More sharing options...
Brian P Posted September 6, 2006 Report Share Posted September 6, 2006 as low as 19mpg that I've calculated, but my old 3100 I'd get 23mpg mixed city/high speed HWY Quote Link to comment Share on other sites More sharing options...
joey b Posted September 6, 2006 Report Share Posted September 6, 2006 with my DOHC I get 15 max with nothing but city. Max 29 with pure highway. Quote Link to comment Share on other sites More sharing options...
rockfangd Posted September 7, 2006 Author Report Share Posted September 7, 2006 yeah thats about what i got. improved when i upgraded alot though Quote Link to comment Share on other sites More sharing options...
Crazy K Posted September 7, 2006 Report Share Posted September 7, 2006 I've got a theory. the guage reading drops as the voltage to ground increases. if I spliced a resistor the the sending wire to ground that allowed a small amount of current flow, (like 2 volts) it might alter and correctly adjust the range. I need to determine what resistor to use. I should experiment and see what happens!!!! Quote Link to comment Share on other sites More sharing options...
rockfangd Posted September 11, 2006 Author Report Share Posted September 11, 2006 very good idea, never thought of it Quote Link to comment Share on other sites More sharing options...
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