01-31-2015, 12:53 PM
I replaced the FPR this evening after work, it did not totally solve the issue, just changed it a bit. My long term fuel trim was 0.0 before the new regulator, and now it sits at 15 or so at idle. This indicates I have a fairly sizable vacuum leak?
I pulled a vacuum line while the engine was running to see what it did to the long term trim (it increased it as expected), and it made a distinctive hissing sound. When I put it back, I realized that the sound decreased in volume, but did not stop entirely. The idle is low across the board, with the A/C engaged it only can get it up to 900 or so now. Sigh.
I pulled a vacuum line while the engine was running to see what it did to the long term trim (it increased it as expected), and it made a distinctive hissing sound. When I put it back, I realized that the sound decreased in volume, but did not stop entirely. The idle is low across the board, with the A/C engaged it only can get it up to 900 or so now. Sigh.
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1993 Tracker 4x4, 2 door, 8v, 3 sp auto. 132k - 25 mpg
1996 Tracker 4x4, 2 door, 16v, 3 sp auto. 100k - 28.6 mpg
1998 Saturn SL2, 4 speed auto, 206k - 35 mpg
1987 Mercedes-Benz 300D turbodiesel, 4 sp auto, 143k - 28.7 mpg
1993 Tracker 4x4, 2 door, 8v, 3 sp auto. 132k - 25 mpg
1996 Tracker 4x4, 2 door, 16v, 3 sp auto. 100k - 28.6 mpg
1998 Saturn SL2, 4 speed auto, 206k - 35 mpg
1987 Mercedes-Benz 300D turbodiesel, 4 sp auto, 143k - 28.7 mpg