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11-01-2015, 01:52 PM | #1 |
Drifter-Wannabe
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Buzzing throttle body/strange behavior?
Hey guys,
Been trying to diagnose a stumbling-during-acceleration issue on my FR-S for a long time now. Finally got around to looking into the TPS. Questions for you: 1. If car is off, key is ON, does your throttle body emit a loud buzzing sound? Because mine definitely does. 2. If you gradually depress the throttle (car off, key ON), does the throttle plate "jump" open when you've reached like 25% throttle on the pedal? Because mine also does that, and doesn't seem normal to me. Thanks! |
11-01-2015, 02:30 PM | #2 |
extra what?
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1. Loud is subjective but it buzzes.
2. What do you mean by "open?" Wide open, or does it not begin to open until after quarter throttle? Or does it jump open to about a quarter throttle ignoring the beginning of the arc? Regarding your second question, I'm not an expert with this platform but it sounds like you're onto something. Can you borrow someone else's TB and accelerator to swap out? (one at a time)
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11-01-2015, 03:08 PM | #3 | |
Drifter-Wannabe
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Quote:
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11-01-2015, 03:46 PM | #4 | |
extra what?
Join Date: Sep 2014
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11-01-2015, 03:50 PM | #5 | |
Drifter-Wannabe
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11-01-2015, 04:07 PM | #6 | |
extra what?
Join Date: Sep 2014
Drives: a 13 e8h frs
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(edit: well, dipped my toe into logging. really a noob) Do you have a copy of the service manual, wiring diagram?
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11-01-2015, 04:14 PM | #7 | |
Drifter-Wannabe
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11-01-2015, 10:24 PM | #8 | |
extra what?
Join Date: Sep 2014
Drives: a 13 e8h frs
Location: vantucky, wa
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Thanked 36,808 Times in 19,083 Posts
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Not sure what to do with that info just yet. It might not be the right place to start. edit: Due diligence - am I correct in assuming it's not throwing any codes?
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11-02-2015, 05:35 AM | #9 |
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This sounds normal to me.
Throttle body actuator make buzzing humming sound totally normal. Also accelerator position reliative to throttle butterfly position is no linear its controlled my complex throttle maps in ecu.If your ecutek turbo tuned then you could also be running hybrid speed density tune. The was some recient update to ecutek racerom to combat hesitations in cold weather on speed density tunes. you need to talk to your tuner, i dont think you can do much diagnostics without loggong and knowing the tune setup. |
11-02-2015, 10:12 AM | #10 | |
Drifter-Wannabe
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11-02-2015, 10:44 AM | #11 | |
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not sure if this has anything to do with it http://www.ft86club.com/forums/showp...3&postcount=46 https://www.google.com.au/search?q=s...e:ft86club.com |
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11-02-2015, 10:46 AM | #12 | |
Drifter-Wannabe
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11-02-2015, 11:18 AM | #13 |
Banned
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11-02-2015, 12:33 PM | #14 | |
extra what?
Join Date: Sep 2014
Drives: a 13 e8h frs
Location: vantucky, wa
Posts: 32,085
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