Idle Noises (*Not Chirping*)

[tyynichols]

Hey everyone, recently purchased a 2015 Scion FR-S with 56,5XX miles. Recently had an issue with RPMs dropping to 500 then shooting up to 1000 while idle, would keep doing that until I restarted the car, turned out to be the Trans control module needed to be reprogrammed. Toyota also replaced the Fuel Pump. Once I got it back and started driving around while parked or at red light I would hear these noises. I have been doing research and have heard a bunch of possible explanations to what is wrong (Vacuum Pump, Lifters, Oil Starvation by excessive sealant, Tensioner/Pulley, Rocker Arm, or Cylinder Heads). Was curious if anyone else had this problem and would be able to shed some light on the situation, the dealer wants me to bring it back monday, but they dont think anything is wrong. Not sure if it is the natural sounds of the boxer engine, but friends with the same car does not have this loud of an idle noise, video attached. Video was not meant for visual but sound, I was looking around at night.

(yes it's auto, sadly, commute to work and home is not manual friendly, plus i would only have 2 days to learn stick before monday lol, so hopefully in the future tho)

[StraightOuttaCanadaEh]

Hmm. That's pretty loud but then again, most of them are if you're poking the microphone at the loud parts. Do the noises sound abnormal from the cabin? Are they most audible when it's colder outside? If first answer is no and second is yes, then I think it's normal.

[tyynichols]

Originally Posted by StraightOuttaCanadaEh

Hmm. That's pretty loud but then again, most of them are if you're poking the microphone at the loud parts. Do the noises sound abnormal from the cabin? Are they most audible when it's colder outside? If first answer is no and second is yes, then I think it's normal.

I mean it is snowy and cold here in Jersey, haven't had it through warmer weather yet, so I can't accurately answer that one, but I noticed the noise while in the cabin yes, it is only really noticeable at idle/parked. I just want to make sure everything is good before it is too late to have the dealer take the car back. I took it to the dealership today, they looked at it for a min or two, and the noises were not there, it sounded quite and no "clicking" at all, i told them it only happens after driving around for a little bit.

[alxtheoreo]

Originally Posted by StraightOuttaCanadaEh

Hmm. That's pretty loud but then again, most of them are if you're poking the microphone at the loud parts. Do the noises sound abnormal from the cabin? Are they most audible when it's colder outside? If first answer is no and second is yes, then I think it's normal.

^This^ along with... When was the last time the engine oil & air filter were changed? If not within the past 6 months or 7500 miles, I would perform this maintenance yourself so you know all of the old oil is out.

I will say from my 5 years of ownership, this engine makes all sorts of noises while cold, and it's normal.

Sent from my SM-G930V using Tapatalk

[StraightOuttaCanadaEh]

Originally Posted by tyynichols

I mean it is snowy and cold here in Jersey, haven't had it through warmer weather yet, so I can't accurately answer that one

I say this because I recently also made a thread about weird noises. Mine basically goes from EL to UEL sound and starts to make a sound similar to if you roll your R above 3200 rpm. None of this happened before it turned cold. When the weather is warmer, it's less prominent. My two cents though. I think all the noises really depend on the ambient conditions and maybe the engine varying the timing according to temp. Maybe that's why when the car was indoors (I'm assuming) at the dealer, the noises weren't there.

[humfrz]

Sounds like an FA20 engine running to me ......


humfrz

[brandonblt2]

I'm from Jersey also and I did notice mine became noticeably louder recently during this recent winter. I've had the car for 4 years and have 112k miles I'm thinking I might need a new alternator belt possibly not sure tho.

[BRZnut]

That's sounds normal to me and how mine sounds since new!

[tyynichols]

Originally Posted by humfrz

Sounds like an FA20 engine running to me ......


humfrz

Originally Posted by brandonblt2

I'm from Jersey also and I did notice mine became noticeably louder recently during this recent winter. I've had the car for 4 years and have 112k miles I'm thinking I might need a new alternator belt possibly not sure tho.

Originally Posted by BRZnut

That's sounds normal to me and how mine sounds since new!

Thanks for all the help guys, just wanted to make sure, can never be too careful when purchasing a "new" car.

[Grady]

First FA20 I have owned is my 2017 Yellow have had it for 6K miles. It sounds just like that also. The knocking comes in and out at idle. I just assume it is the nature of the beast.

[Tcoat]

Most of what messes with people's heads is the change in sound as the car switch's back and forth between the port and direct injectors. Each system has a totally different sound and since most of us are not used to a duel fuel injection system those different sounds worry us. At this point in time I would be much more worried if my engine didn't make weird (to me) noises!

[humfrz]

Originally Posted by tyynichols

Thanks for all the help guys, just wanted to make sure, can never be too careful when purchasing a "new" car.

Yep, some of old timers are familiar with those engine sounds from back-in-the-day when an old stove bolt six had a couple valves out of adjustment, a loose air filter, a fouled spark plug and a squeaking water pump.




humfrz

[Tcoat]

Originally Posted by humfrz

Yep, some of old timers are familiar with those engine sounds from back-in-the-day when an old stove bolt six had a couple valves out of adjustment, a loose air filter, a fouled spark plug and a squeaking water pump.




humfrz

One of my very least favorite noises was the distinctive 'click TWANG' sound as the manual choke cable broke off yet again. Heard that noise more often then I would care to.

[humfrz]

Originally Posted by Tcoat

One of my very least favorite noises was the distinctive 'click TWANG' sound as the manual choke cable broke off yet again. Heard that noise more often then I would care to.

Yep, if it was the second time ...... it was time to stop by the junk yard .....


humfrz