Quote:
Originally Posted by N1rve
There is currently no fix for this. Other people tried the ashless whatever and Upper Cylinder lube. Some state it worked for them, some state it didn't.
I have my original fuel pump in my 2013 FRS. I occasionally get chirps but they never last. I live in California, so I get the same fuel as you do. What I've concluded from my own observation is that Ethanol doesn't cause it, or else people with E85 would be chirping all day everyday.
For my car, when I get lower than half tank, the chirps come. However, I fill up at Costco and never at other gas stations.
No failures.
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I'm just starting to notice some chirping at idle on mine and it's only around ~500 miles. The gas tank is full too...so I'm not experiencing your issue with lower than half a tank of gas. Although sometimes when I drive it around a bit and stop, it wouldn't make any noise. Seems pretty random.