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Old 09-23-2010, 02:00 PM   #1
blacksubieSTi
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Default Fuel gauge innaccurate

First of all, I would like to appologize if I missed any previous threads on this topic. However, I have found a few but they were all a bit different than my exact issue.

I just bought an 07' STi this past Saturday and when I first filled my gas tank, I noticed that my needle did not completely reach the "F" line. I have now filled my tank a few times and the exact position of the needle varies each time, but still remaines less than Full. Typically in most vehicles, it will exceed the "F" line. I am somewhat concerned as I have an innacurate reading of how much fuel is actually in my tank...

I did read somewhere they were saying that one of the two sensors gets some sort of build up grime on the end of the sensor and produces this innaccurate reading and that by gently cleaning the tip of it, it resolves the issue. They also stated this is a common issue with most Subaru vehicles.

One other thing I noticed is that my engine temp is a bit below center. See the photo below:



Thanks for your help...
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Old 09-23-2010, 02:31 PM   #2
Rhymesayer
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Engine temp is fine. Did the previous owner install a larger fuel pump? He may have bent the lever arm. I bent mine.
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Old 09-23-2010, 02:37 PM   #3
blacksubieSTi
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Not that I know of...where do I check the lever?
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Old 09-23-2010, 03:40 PM   #4
Cougar4
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The level sensors contacts may be dirty. Some folks have used Chevron Techron in the tank to help clean the contacts and it has help some of them clear this trouble.
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Old 09-23-2010, 03:45 PM   #5
Rhymesayer
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Quote:
Originally Posted by blacksubieSTi View Post
Not that I know of...where do I check the lever?
Make sure your tank is low and pull out the fuel pump. Its located behind your passenger side rear seat. Then check the lever arm with the little plastic float at the end of it.
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Old 09-23-2010, 04:52 PM   #6
blacksubieSTi
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Thank you all for your replies...I will be trying the Chevron Techron and if that doesn't do the trick I'll be moving onto the other method.
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Old 09-26-2010, 10:23 AM   #7
Dirty_WRX
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Most likely that bent lever arm. This happens very often when people get impatient taking out the fuel pump assy.
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Old 09-28-2010, 12:39 AM   #8
fastnoypi
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was the pump ever swapped?, if so the lever arm is probably bent
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