My Mazda MX5 frequently loses power temporarily then after a short distance returns to full power. When power lost, engine may be kept running by keeping up the revs. If engine stalls it can be restar

Asked by Jul 27, 2014 at 08:56 AM about the 1999 Mazda MX-5 Miata Base

Question type: Maintenance & Repair

4 Answers

28,145

Could be a issue with the fuel pressure regulator or maybe even a fouled up fuel filter. I'd take her to a mechanic and have the diagnostic codes read to determine the source of the problem.

1 people found this helpful.
27,515

It could have a gunked up throttle body or even a bad Idle control valve. It would be a good idea to get a cheap code reader if your planning on fixing it yourself. This link @ miata.net might be of some help: http://forum.miata.net/vb/showthread.php?t=175288

1 people found this helpful.
105

Same thing happened to me, it would run fine then loose power running rough for a short while then return back to normal, it turned out to be a failing coil pack which is well known on the MX5 a diagnostic should confirm if this is the case, replaced the coil pack with a new one - problem solved!

1 people found this helpful.
Best Answer Mark helpful

I took your advice and planned to change the coil pack. I purchased a manual and did some initial exploration. When I removed the coil pack leads, I found one was badly corroded. After cleaning and refitting the lead, the car ran perfectly. Thanks for your excellent advice

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