Mazda Miata (MX-5) This compact RWD model, offered with many engines options for those are who want to cruise with the top down in a base model, or hit the track in one of the high performance models, has been a popular model since its introduction.

M2 mysteriously loses power

Old 07-21-2018, 12:18 PM
adv is offline
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Default M2 mysteriously loses power

My 2001 M2 ran perfectly until a couple of years ago. Now, after starting up and running well for about 10 minutes, the engine suddenly loses most of its power. The exhaust note drops down very low, but doesn't sound irregular. It runs like this, with barely enough power to keep moving on a level road, for about 30 seconds, and then just as mysteriously it jumps back to normal and from then on runs normally. Sometimes it takes much longer to recover, and occasionally I have to turn off the engine and restart it. All the computer code reads is "misfire." One mechanic said it was the oxygen sensor, and replaced it to the tune of $300, but that didn't solve the problem. Another said it's the catalytic converter, whose replacement is even more expensive. Has anyone had experience with this kind of problem? More important, has anyone had it--and solved it?!

Last edited by adv; 07-21-2018 at 12:26 PM.
Old 08-27-2018, 08:11 AM
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Location: California
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The lack of replies you’ve received might be because you’ve posted your question in the Miata forum. You might get answers if you ask the correct forum. Good luck!
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