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S Chassis Technical discussion related to the S Chassis such as the S12, S13, S14, and S15.


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Old 02-19-2023, 10:27 PM   #1
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S14 gas gauge problem

Recently replaced the o2 on the car just as a maintenance thing, The car did use a lot less gas and ran the same which was good. A week goes by and driving the car one day and the gauge goes from halfway to 1/4. So I fill it back up and keep an eye on it and can tell it started to use the same amount of gas as before or maybe even a little worse. I had some time and found out the line that runs from the bottom right of the tank to the top hat had actual gotten a tear in it and was leaking some gas out so i cut it off and moved the line up. Still had the same issue and found a little further down the line it had another tear in it so I fixed that section as well. After fixing the line i took off the top hat to inspect and see if the floater was still on the hanger which it was so I filled the car up and it was right at 3/4 of a tank and I went on a 20 mile drive, the car was just above halfway. The issue is the gauge shows just above half and I will drive the car hard 3k+ rpms and it will move up right to just under 3/4 of a tank then I drive normally and it will fall back to just above halfway. There are no more leaks no wiring was messed with. The o2 was a bosch. I have replaced the spark plugs, wires, and maf 3k miles ago.
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Old 02-20-2023, 10:04 AM   #2
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Sounds about normal.

Relentless motorsports in Texas can rebuild/refurbish the cluster of it is a board issue.
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Old 02-20-2023, 10:50 AM   #3
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s13 or s14?
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Old 02-20-2023, 11:57 AM   #4
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Quote:
Originally Posted by jr_ss View Post
Sounds about normal.

Relentless motorsports in Texas can rebuild/refurbish the cluster of it is a board issue.
Really? never had the issue before until I noticed the tear in one of the lines.
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Old 02-20-2023, 11:58 AM   #5
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Quote:
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s13 or s14?
S14 specifically a 95
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Old 02-20-2023, 05:50 PM   #6
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Quote:
Originally Posted by S13..240sx View Post
Really? never had the issue before until I noticed the tear in one of the lines.
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S14 specifically a 95
My S14 (95) does it as well. Perhaps not as drastically as you?ve made yours sound, but I have noticed it too.
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Old 02-20-2023, 05:54 PM   #7
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Originally Posted by jr_ss View Post
My S14 (95) does it as well. Perhaps not as drastically as you?ve made yours sound, but I have noticed it too.
yea just bugs me as im not able to tell if the car actually has half a tank or 3/4. going to try and look at the float and see if something is up with it
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