Loss of power - Mazda Forum - Mazda Enthusiast Forums

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.

Loss of power

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Old 09-19-2018, 05:44 AM
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Join Date: Sep 2018
Location: Orlando
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Default Loss of power

My '00 NB has lost its umph. Intermittent power loss when I pull away from a standing start. Car is idling ok but momentarily RPMs drop, it almost conks out, then re-groups and idles ok.

Background: A week ago I threw an alternator/water pump belt and in the time it took me to get into a gas station (5 mins?) the temp gauge climbed to max. I shut it off with no water/coolant leaking but the engine had definitely heated up. When I got the belt put back on it began its rough running and threw a CEL. I forget the code number but it was for spark plug wires . I replaced those and the plugs (and got rid of the CEL) but the rough running hasn't gone away - in fact it's gotten worse and yesterday it threw another CEL. I haven't had time to get a code on that yet.

I'm thinking this is electric and related to the engine overheating. Maybe a bad coil? Any help would be appreciated.
 
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