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08-22-2012, 12:36 PM
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#1 |
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Kouki-Monster
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Drives: 2013 Scion FR-S
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Tick Click Tick (injector orgy)
I noticed this last night .. after normal driving I pulled into a drive-thru and I could hear a lot of ticks and switching sounds under the hood - very presumably the D4S system.
It sounded very finicky like the D4S couldn't decide what it was doing and something kept switching on/off or back and forth and the revs would slightly alter each time. Not significant but it was definitely weird. Anyone with similar experience? Performance wise nothing seemed out of place.
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Rich Anderson
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08-22-2012, 12:56 PM
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#2 |
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Future FR-S Owner
Join Date: Apr 2012
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I have the same thing happen in my tC. Could be the fan switching on and off, could be the AC, it could be quite a few things up there. I know a tC and the twins are not nearly the same car, but I would chalk it up to normal.
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08-22-2012, 06:09 PM
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#3 |
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Senior Member
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I remember reading in a couple places on here that the ECU for the fuel delivery system makes constant calculations for switching on and off Port injection. I doubt it would happen repeatedly at idle, but you might notice a change when coming to a stop for the first time.
http://www.ft86club.com/forums/showthread.php?t=3172 http://www.ft86club.com/forums/showthread.php?t=100 |
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08-22-2012, 07:09 PM
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#4 |
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Kouki-Monster
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yeah it was switching back and forth repeatedly.
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Rich Anderson
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08-27-2012, 03:28 PM
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#5 |
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had the same thing happen on our car after the first week of driving. its kind of random but as long as it doesnt fail ill stay away from the dealer
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