|
Issues | Warranty | Recalls / TSB Problems, issues, recalls, TSBs |
|
Thread Tools | Search this Thread |
12-27-2019, 03:27 AM | #1 |
Member
Join Date: Nov 2019
Drives: Scion FR-S
Location: CA
Posts: 14
Thanks: 4
Thanked 2 Times in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
HELP P0354 Cylinder 4 Misfire
I have a 2013 FR-S, right side of engine near cylinder 4 engine shakes and rattles ECU is throwing P0354 and P0304
Engine is also making a weird noise near the right side of engine -I've replaced ignition coils and spark plugs on cylinder 4 with no luck, any ideas what it could be? I've noticed the coil pack does not sit completely flush when plugged on, is it supposed to sit tight and flush against the engine/spark plug? Last edited by isaiah990; 12-27-2019 at 03:52 AM. |
12-27-2019, 03:50 AM | #2 |
Member
Join Date: Nov 2019
Drives: Scion FR-S
Location: CA
Posts: 14
Thanks: 4
Thanked 2 Times in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Here is a video of my car
[ame]https://www.youtube.com/watch?v=6nL6xUVrzRU[/ame] |
12-27-2019, 04:33 AM | #3 | |
Senior Member
Join Date: May 2013
Drives: 2013 FR-S, white, MT
Location: Puyallup, WA
Posts: 29,866
Thanks: 28,787
Thanked 31,813 Times in 16,424 Posts
Mentioned: 708 Post(s)
Tagged: 2 Thread(s)
|
Quote:
Happy holidays! So, your car is acting up. Do you have any power mods? You replaced the #4 plug and coil. I reckon the coil should fit snug onto the spark plug. Is it fitting differently than the other coils? You might try swapping a couple of the coils to see if the engine code changes. After that, I'd suggest you disconnect the battery for a spell, hook it back up and see if any codes come back. The next easiest thing to check would be to check for a vacuum leak. I hope you get it sorted out. humfrz |
|
12-27-2019, 05:54 AM | #4 | |
Senior Member
Join Date: Apr 2015
Drives: Subaru BRZ
Location: UK
Posts: 6,027
Thanks: 7,651
Thanked 6,183 Times in 3,472 Posts
Mentioned: 25 Post(s)
Tagged: 2 Thread(s)
|
Quote:
Happy holiday.. BTW, I bet the sand helped with the digestion.... A bit of grit is good for the gut... |
|
12-27-2019, 01:57 PM | #5 | |
Senior Member
Join Date: May 2013
Drives: 2013 FR-S, white, MT
Location: Puyallup, WA
Posts: 29,866
Thanks: 28,787
Thanked 31,813 Times in 16,424 Posts
Mentioned: 708 Post(s)
Tagged: 2 Thread(s)
|
Quote:
A bit of sand is good for the turkey's gut - humfrz |
|
The Following User Says Thank You to humfrz For This Useful Post: | JD001 (12-27-2019) |
12-27-2019, 04:47 PM | #6 |
Senior Member
Join Date: Jun 2012
Drives: '13 BRZ TLM Spec
Location: Florida
Posts: 1,956
Thanks: 1,603
Thanked 2,310 Times in 996 Posts
Mentioned: 115 Post(s)
Tagged: 0 Thread(s)
|
If coil is not sitting flush, something is wrong. Either the plug isn't installed properly or fully, or the coil has an issue.
Where did you get the new plug and coil? Once those issues are corrected if the code(s) persist it may be an issue with the engine harness. Subaru has a TSB regarding this.
__________________
2013 BRZ Premium 6MT - Track Car, 2020 GMC Canyon Denali Duramax - Tow Vehicle, 2021 Forester Sport - Wife's Daily, 2016 Crosstrek - Daughter's Ride and always buying random flips...
|
12-27-2019, 08:25 PM | #7 |
Member
Join Date: Nov 2019
Drives: Scion FR-S
Location: CA
Posts: 14
Thanks: 4
Thanked 2 Times in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Thanks for your response I’ve swapped coils and I’ve also replaced them. Spark plugs have been replaced already so maybe wiring harness or something else?
I got the spark plug from the Toyota dealership and the coil pack from autozone Last edited by isaiah990; 12-27-2019 at 08:40 PM. |
12-28-2019, 04:45 PM | #8 |
Member
Join Date: Nov 2019
Drives: Scion FR-S
Location: CA
Posts: 14
Thanks: 4
Thanked 2 Times in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Any ideas what that noise could be? I couldn’t find any other videos with a similar noise
|
12-28-2019, 05:03 PM | #9 |
Member
Join Date: Nov 2019
Drives: Scion FR-S
Location: CA
Posts: 14
Thanks: 4
Thanked 2 Times in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
The noise seems to come in low idle after about 15 seconds of my car warming up
|
12-28-2019, 05:12 PM | #10 |
Senior Member
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,195
Thanks: 500
Thanked 1,065 Times in 774 Posts
Mentioned: 65 Post(s)
Tagged: 0 Thread(s)
|
|
12-28-2019, 05:32 PM | #11 |
Member
Join Date: Nov 2019
Drives: Scion FR-S
Location: CA
Posts: 14
Thanks: 4
Thanked 2 Times in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Thanks for your reply, I was thinking it could be the injectors, would that cause a code p0354 or somehow affect the coil pack? I’ve unplugged the cylinder 4 coil pack ignition D while the car was running but it did not change anything so I’m not sure if it’s the coil pack or injectors causing it. I’m trying to get this fixed asap hopefully before New Years but I’m having trouble diagnosing the problem
|
12-28-2019, 06:50 PM | #12 |
Member
Join Date: Nov 2019
Drives: Scion FR-S
Location: CA
Posts: 14
Thanks: 4
Thanked 2 Times in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
UPDATE: coil pack or wiring harness to do not seem to be the problem. Noise only comes on after engine warms up about 15 seconds. I’m assuming it could be the injector responsible for cylinder 4.
|
12-28-2019, 08:58 PM | #13 | ||
Senior Member
Join Date: Apr 2019
Drives: 2013 FRS
Location: Washington DC
Posts: 177
Thanks: 93
Thanked 61 Times in 38 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
|
Quote:
As you said, at some point, the injection method switches, and the 'crickets' can be heard. Not sure about the AVCS as I'm not familiar with that. Modern cars also have a secondary air injection (kinda sounds like a jet engine, but not as loud unless your air pump is going bad) for about ~90 seconds when a car is cold. There are a few other processes that change as well, and you can clearly hear the idle change sound and speed throughout the process. Quote:
I am also concerned about that metal rapping sound. It's an accessory, I'm sure, but still distracting in the video. These types of sounds never show up well in video recordings. The why you start diagnosis with ignition problems is to start switching the coils around. Computer says cyl#4 misfire? Swap cyl#1 ignition coil with cyl#4 ignition coil and see if the code follows over to cyl#1 or stays at #4. Obviously, this is assuming that the coils are properly installed, and there isn't a glaring issue such as debris in the spark plug hole (maybe why your ign coil isn't seating properly?) or other. |
||
12-28-2019, 09:32 PM | #14 | |
Member
Join Date: Nov 2019
Drives: Scion FR-S
Location: CA
Posts: 14
Thanks: 4
Thanked 2 Times in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
-I’ve swapped coil packs and the misfire remains on cylinder 4 -cylinder misfire occurs constantly after 15 seconds when idle rpm drops on cold start -When I unplug coil pack #4 right after I start the car it causes it to stall. When I unplug the same coil pack after the misfire occurs or 15 seconds after start it has no effect on the idle Could this noise be a failing injector? Here is another clip right after start up. I have UEL headers and N1 catback Last edited by isaiah990; 12-28-2019 at 09:45 PM. |
|
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
P0463, u0122, and P0301 Cylinder 1 misfire | Shark_Bait88 | Issues | Warranty | Recalls / TSB | 0 | 08-12-2019 06:34 PM |
Recurring P0354 P0352 | Mr.Scion | Issues | Warranty | Recalls / TSB | 8 | 02-12-2019 12:56 PM |
P0354 Ignition Coil Malfunction Trending | Gords_zenith | Issues | Warranty | Recalls / TSB | 8 | 05-15-2014 01:41 PM |
Misfire | Jono | AFRICA | 49 | 12-12-2012 06:01 AM |