darkstar107

ok i have been through this and this is what you do. Intermittent = electrical issue, not mechanical one

 

start engine when COLD

 

quickly go around and wiggle each coil connector until you find the one that causes the car to stumble

 

delaminating coils should be replaced. you can get them for about $70 each on rockauto for NGK OEM ones.

 

At 146K I did all 6 and it was just under $400 after discount

 

I ordered 2 coil packs to replace the delaminating ones from Rock Auto(love that site) on Sunday and received them this evening. I just finished installing them and took it for a test drive. The car felt more responsive. I drove around, stopped for a few minutes a couple times the stopped for about 10 mins when I got back to my driveway and there was no more shaking. Fingers crossed that the issue is resolved.

 

The coil pack that was connected to the cylinder that was misfiring had a couple layers of metal fall off it when I took the bolt off, so it was getting pretty bad.

As the title says, I'm having some issues with my 2013 3.6R shaking when Idling it is not a contant shake and only happens occasionally; It'll shake for half a second then stop for between 2-10 seconds and then shake again. Check engine light has never come on since I owned the vehicle.

 

I recently changed my spark plugs so that's not the issue. When I pulled out the spark plugs though, I had 2 ignition coils that had the metal layers on the end starting to peel off. I'm on a budget right now though and don't want to buy parts that aren't needed. Do you think the ignition coils could be causing the issue even without the CEL coming on?

 

Edit: I just did a mode 6 scan with my OBDII reader and it is seeing misfires on cylinder 4 which is one of the ones that has the metal layers peeling apart so I'm just going to replace the 2 coils.

I drove to work for the first time in a number of weeks and hit the bump that normally causes rubbing and nothing rubbed this time. It must have just been the tab sticking out (and not holding the plastic tight enough to the fender) as mentioned in a previous reply. Which is good because I'd rather not have to roll my fenders and risk cracking paint.

I would definitely be rolling the fenders asap if my tires were rubbing that much. What vehicle is this on and what's the stock tire size for your vehicle?

I posted that then checked the overall diameter and realised it was not that big of a difference. Post wasn't neccessary and you were spot in from the get go, my bad.

 

There were some other factors not given like wheel width. Tire manufacturer can also play a big role, but all this info is out there between this forum and many others. Problem has been solved but at the fear of still rubbing at 60 kmh.

 

 

 

Definitely follow Locosiete's advice and check to make sure all the push pins are in and good beforehand.

 

I say give it a go at 60 and see what happens. No damage to the tire which is a good sign. what's one more time?

 

I would also check to see if one of the plastic push rivets didn't break and causing the fender liner to sit lower then normal. Should be able to inspect without removing tire or jacking up car.

 

Turn the steering wheel all the ways to left and check both sides then turn steering wheel all ways right and check again. After all its just cheap little plastic push rivets that hold the bumper and liner in. Hopefully for your sake it's as easy as replacing one or 2.

 

I found my cell phone to be very handy to take a video and see where my head don't fit.

 

 

 

Again why I said should be similar. But thank you for explaining the math.

 

Thanks for the replies. I haven't been really active lately because I've been working from home for the last few weeks and not driving a whole lot. I'm back in the office next week so will have to hit it at 60 again and see if it still does it.

 

I took a closer look with a flashlight and I found a spot on the plastic which may be the source of the rubbing. There's a small spot where the plastic sticks out a little bit passed the fender. The tab that I mentioned that pushed in would have pushed the plastic in closer to the fender a little so hopefully that's all it was.

At stock hiegth you shouldn't have any issue rubbing. How hard are you hitting these bumps lol ?

I have been running 225/45R18s for several years and never had a problem. It's only now that I lowered mine that it rubs a little now on the freeway.

Your overall circumference should be similar to stock but your tire width is larger now.

 

On my commute there's a dip in the road that compresses the suspension quite a bit. I did find that one of the tabs on the inside of the fender (that holds the plastic in place) was sticking out quite a bit so that may have been what was rubbing. I've just been taking that section a little slower (50 instead of 60 km/h) and haven't had any rubbing. I haven't had the guts to go 60 to see if my tab theory is correct. But there's absolutely no marks that I can see on the tire so, as mentioned, it must have just barely been touching.

 

The 45 in the tire size is an aspect ratio. So the sidewall is 45% of the width. Increasing tire width but staying the same aspect ratio will increase the circumference of the tire. 245/45 tire has a sidewall height of 110.25mm vs a 225/45 with a 101.25mm height. Overall diameter changed from 25.97in to 26.68in.

 

Now not that big of a change and others have ran it without rubbing.

 

Also missing wheel width here

 

Wheel width is 8.5 inches.

 

See reply to quote above for the possible fix regarding the metal tab on the inside of the fender.

 

Are the hard foam bump stops on the damper shafts still present and in good condition?

 

Ya, nothing seems to be wrong with the suspension.

Heard it again this morning over the same bump and was paying a lot more attention this time. It did sound like rubbing and I did find out that it is barely touching the lip of the fender so I guess I'm going to have to get them rolled.

I drove home from work and tried to hit some decent sized bumps and never heard the noise again. Will have to keep an eye on it I guess.

If it only happens when you hit bumps, I would be looking at sway bar end links

 

I'm now trying to remember if I even hit a bump the first time I heard it. If there was one, it was very small and hardly noticeable.

When I bought my car it had those sized tires with a 8.5" rim with 45mm offset plus 15mm spacer (so 30mm total) with rolled and pulled fenders and it was eating the inner fender liners up on bumps.

 

You might have to roll your fenders, maybe some one else can chime in on fitment. I currently run +45mm (no spacer) and stock height tire.

 

I took a closer look and turned the wheels all the way in both directions and looked behind as much as I could and saw absolutely nothing that could even come close to contacting the tires. There also isn't any marks on the fenders and it doesn't sound like rubber hitting something; it sounds like something hard hitting metal.

 

At this point I'm starting to think that it was rocks coming out of the tread (there's some in there) and it was just a coincidence that it sounded very similar.

 

 

Do you have the stock suspension?

 

Yes, stock suspension

 

Should be clear with a 40 offset.

When I went from a 42 to a 35 offset, there is no way in driving it without rolling/pulling the fenders.

 

 

Sent from my iPhone using Tapatalk

 

 

Ya, I asked on here about the size a few months ago and got a reply from someone who had the same setup with no issues.

What is the offset of the rims?

 

Offset is +40.

 

To add, there isn't any abnormal noise when driving otherwise.

 

Edit: Willtheyfit.com says they should have more clearance for brakes etc than the stock rims. When I installed them I put hubcentric rings on and torqued the lugs to 73 ft lbs. I'm kind of at a loss for what it could be unless it's just coincidence that it started happening after I put them on.

I put some new tires and rims on my 2013 Legacy 3.6R yesterday. The tires are 245/45/18 so they are a little bit bigger than stock. Took them for a drive right after I got them and when I hit a bump, I heard a "clang" noise that sounded kind of like a rock coming out of the tread and hitting something metal. I chalked it up to that but on my commute this morning I hit a bump and heard the same noise (came from the front end).

 

When I got to work I took a quick look and didn't see any kind of rub marks anywhere in the wheel well or on the shocks. Does anyone have any ideas for what it could be?

rolling the fenders--basically reshaping the inner lip of the fenders a little bit to provide more clearance for wider wheels/tires.

 

Makes sense. Thanks.

I'm also on Konis/RCE blacks! I am running a 255/40/18 tire on 18x8.75 +36 wheel. As far as strut clearance, there's no issue. I did have to roll all four corners cuz of the offset on my wheel tho

 

What do you mean by "roll all four corners"?

I got some rims and tires used but am now worried that they're going to rub (they're summer tires so wouldn't be putting them on until April).

 

Rims are 18" x 8" with 40mm offset. Car is 2013 Legacy 3.6r with stock suspension.

 

Anyone know if these will rub anything?

 

Edit: After doing some more searching and reading it looks like this setup will be fine.