|
Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
|
Thread Tools | Search this Thread |
11-14-2019, 06:48 AM | #1 |
Member
Join Date: Dec 2018
Drives: TOYOTA GT86 2014
Location: Dubai
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
HELP! Cold start rattling sound when press throttle.
HELP! Cold start rattling sound when press even 1% throttle.
I heard a weird noise coming in my engine. sounds like rattling sound whenever i press slightly the gas pedal after 10mins driving sounds still there but not too loud. noticeable when cold start. doesn't matter if on parked or drive. whenever i press the gas pedal like 1% - 5% throttle I heard a rattling sound but not too loud. its like a chain or something. Rattling sound is very constant even 1000 RPM or 4000 RPM still the same rattling sound. It stops when I am not pressing the gas pedal. Direct injectors - have been replaced 2 months ago. Major Service - Done last year. (90k kms) Now I have 115k kms (Change oil done last week) I have attached a sound clip which I found it from FRS owner before. Similar sound. |
11-14-2019, 07:37 AM | #2 |
Senior Member
Join Date: Feb 2018
Drives: '14
Location: Midwest
Posts: 485
Thanks: 246
Thanked 99 Times in 76 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
|
Sounds like the skid plate underneath the car is loose or flapping against something. Did you go under the car to make sure the plates down there isnt a missing bolt?
|
The Following User Says Thank You to kev0 For This Useful Post: | Tcoat (11-14-2019) |
11-14-2019, 07:56 AM | #3 |
Rust bucket enthusiast
Join Date: Feb 2017
Drives: 2013 Turbo Firestorm FRS
Location: Vermont
Posts: 3,933
Thanks: 3,200
Thanked 4,095 Times in 2,045 Posts
Mentioned: 31 Post(s)
Tagged: 0 Thread(s)
|
Any modifications to the exhaust on your car?
Have you checked your oil level since doing the oil change?! |
11-14-2019, 08:12 AM | #4 | |
Senior Member
Join Date: Jul 2014
Drives: 2020 Hakone
Location: London, Ont
Posts: 69,845
Thanks: 61,656
Thanked 108,283 Times in 46,456 Posts
Mentioned: 2495 Post(s)
Tagged: 50 Thread(s)
|
Quote:
Either a skid plate or heat shield got bent/loose somehow.
__________________
Racecar spelled backwards is Racecar, because Racecar.
|
|
11-14-2019, 08:54 AM | #5 |
Member
Join Date: Dec 2018
Drives: TOYOTA GT86 2014
Location: Dubai
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Yes checked all panels and underneath everything is tighten. Cold start doesnt have rattle noise but when I started to press the gas pedal even very very slightly it makes a rattling noise. It doesnt matter if 1% throttle or 30% throttle. Sound is very consistent. No change of sound even i go more higher RPM.
|
11-14-2019, 08:55 AM | #6 | |
Member
Join Date: Dec 2018
Drives: TOYOTA GT86 2014
Location: Dubai
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Before Oil change sound is there so I think I am getting a low oil level, and its time for a service (115k kms) now I change oil and check levels are good. But still the rattling noise still there. Last edited by kishi23; 11-14-2019 at 02:05 PM. |
|
11-14-2019, 08:58 AM | #7 |
Member
Join Date: Dec 2018
Drives: TOYOTA GT86 2014
Location: Dubai
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
|
11-14-2019, 09:18 AM | #8 |
Senior Member
Join Date: Jul 2014
Drives: 2020 Hakone
Location: London, Ont
Posts: 69,845
Thanks: 61,656
Thanked 108,283 Times in 46,456 Posts
Mentioned: 2495 Post(s)
Tagged: 50 Thread(s)
|
Make sure that all the heat shields are away from surfaces. I went through a big puddle once and very slightly bent a heat shield. Made the same noise you are describing under the same circumstances.
__________________
Racecar spelled backwards is Racecar, because Racecar.
|
11-14-2019, 02:07 PM | #9 |
Member
Join Date: Dec 2018
Drives: TOYOTA GT86 2014
Location: Dubai
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Thanks Ill check again tomorrow, Drove the car tonight and seems the rattle get quitter. But still there.. very noticeable on cold starts.
|
11-14-2019, 02:25 PM | #10 |
Senior Member
Join Date: Jul 2019
Drives: 2018 Subaru BRZ Limited with PP
Location: Phildalphia, Pennsylvania
Posts: 975
Thanks: 2,123
Thanked 609 Times in 391 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
|
Seems interesting, though, that it is a consistent rattle and equal across the various RPM range. If it is as you describe of course. Makes me question whether it could even be a rattle coming from any bent heat shields or other materials under there. As RPM changes, the vibration should change tone or consistency as well. Maybe not though, as I don't know what else it could possibly be besides something simple like a rattle. When did this start and was it sudden or did it get louder over a period of time to where you were really noticing it.
|
11-15-2019, 12:09 AM | #11 |
Damn that's crazy...
Join Date: Oct 2018
Drives: 2015 BRZ
Location: Texas
Posts: 971
Thanks: 771
Thanked 772 Times in 467 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Open up your hood and have somebody else start your car. Peek in there with a flashlight and see if you are able to see anything. Checking the under panels/splash guards when the rattle is most noticeable (cold starts) might be your best bet. Good luck hope it's nothing serious.
|
11-15-2019, 12:33 AM | #12 |
Senior Member
Join Date: Jan 2019
Drives: 2017 BRZ PP , 2005 Saab 97X
Location: CA
Posts: 1,052
Thanks: 754
Thanked 721 Times in 405 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
|
rattling that isnt heat shields?
pulley? belt? tensioner? do you have one of those stupid grimmspeed tooltray things? are you missing a bolt? |
11-15-2019, 01:04 AM | #13 | |
Member
Join Date: Feb 2017
Drives: 2013 Rally Blue w/Bronze wheels MT
Location: Florida
Posts: 62
Thanks: 9
Thanked 12 Times in 10 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Check your a/c compressor or alternator for loose/missing/ or broke hardware. If not that make sure your heat shields, and exhaust hanger by the transmission bell house to insure its tighten down |
|
11-15-2019, 03:24 AM | #14 | |
Member
Join Date: Dec 2018
Drives: TOYOTA GT86 2014
Location: Dubai
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
1 day it was 45C then suddenly next day is winter. 18C and below. It gets louder tho when cold start. Which for sure a new rattle sound I observe since 4 years driving the 86. |
|
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
FRS 2015 Cold Start Sound. | Feronous | Engine, Exhaust, Transmission | 16 | 07-10-2018 10:04 PM |
Grind sound on Cold start | japes | Issues | Warranty | Recalls / TSB | 12 | 07-07-2016 08:58 PM |
Q300/Slight rattling sound on cold startup | ikkomaji22 | Engine, Exhaust, Transmission | 1 | 11-15-2014 06:44 AM |
Rattle sound on cold start | Frs32907 | Issues | Warranty | Recalls / TSB | 0 | 07-12-2014 10:36 AM |
rattle sound cold start | marky | Issues | Warranty | Recalls / TSB | 1 | 03-24-2014 06:16 PM |