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2010 6speed Problem?

Old 03-24-2019, 04:35 PM
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2010 6speed Problem?

I have a 2010 6 speed. 20,000 miles. I just started to notice power failure at high RPS and today when going up steep hill in second gear at 4000RPMs there was again a loss of power. I searched forums and came up with it possibly being bad cat. converter? could it also be the coils? Is there a test without going to the dealer? thanks in advance
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Old 03-24-2019, 07:23 PM
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Yes it could be those things. The cat needs to be removed and visually inspected, and the coil should just be replaced preventatively if older than 30k. You can also do a basic test with a spark tester, but a proper test needs a bit more equipment than that. The dealer can certainly.

Possible it's the clutch? When you say you lose power, do the rpms climb without a corresponding change in speed? If so: clutch.
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Old 03-25-2019, 08:58 AM
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RPMs wont climb..no power. Don't trust my dealer so local mechanic going to test cat. tomorrow. I plan on also replacing coils, plugs and wires too. Thanks !
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Old 03-29-2019, 01:24 PM
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Cat tested fine. Ordered some BHR coils, wires and plugs. Mechanic said MAF needs cleaned. Just glad I dont have to replace cat.
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Old 03-29-2019, 02:57 PM
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That's a strange solution... MAF failures typically cause idle instability, not power loss.
Are you sure there isn't a huge vacuum leak somewhere?
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Old 04-05-2019, 04:27 PM
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Just a thought here:

If mechanic looked at only the input side of the cat and determined it was fine, then it he (she) may have missed where these cats like to clog, which is the rear cell. The front can look perfect, and the rear can be more than halfway obstructed. Most cats on normal cars do not fail this way, so if the mechanic did what he normally does to check a cat, it was probably not enough. As has been stated here many times, this car doesn't like cats, and cats don't like this car, so please verify that both ends were inspected.

Last edited by kevink0000; 04-05-2019 at 04:28 PM. Reason: spelling
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Old 04-05-2019, 05:04 PM
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Originally Posted by kevink0000 View Post
Just a thought here:

If mechanic looked at only the input side of the cat and determined it was fine, then it he (she) may have missed where these cats like to clog, which is the rear cell. The front can look perfect, and the rear can be more than halfway obstructed. Most cats on normal cars do not fail this way, so if the mechanic did what he normally does to check a cat, it was probably not enough. As has been stated here many times, this car doesn't like cats, and cats don't like this car, so please verify that both ends were inspected.
+1
Video of this incoming... uploading video I took with my phone to youtube showing a Rx8 OEM cat that looks good initially from the front but even just looking through the O2 bung tells a very different story...


Last edited by Xero Ryuu; 04-05-2019 at 05:35 PM.
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Old 04-05-2019, 06:27 PM
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Sweet mother of pearl. Nicely done. Good to know.

Weird cause I would have thought the front would look like that, since thatís in direct line of Fire. Lol.
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Old 04-06-2019, 01:10 PM
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Cat works by making the exhaust gas hotter, and the second cat is the reduction cat that burns the unburnt fuel, so if you have a lot of unburnt fuel, the 2nd cat will take a lot of abuse as well.

If you take it completely off, you can use a flashlight, put it in from the rear, and then carefully manipulate the cat to see if the light shines through all the way.
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