still running rough rpms are slowly creeping up?

2003 MAZDA MIATA
146,000 MILES • 2WD • AUTOMATIC
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DB123
  • MEMBER
  • 37 POSTS
Changed the crankshaft position sensor and camshaft position sensor scan tool gave me specific dtcs for them now car is still running rough rpms are slowly creeping up on its own then dies amd no codes on diagnostic machine and all live data look ok
Sep 24, 2025 at 8:55 AM
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DB123
  • MEMBER
  • 37 POSTS
It was a 1.8 idk why it has 3.point whatever on it but I got it going ans fixed this afternoon thanks guys
Sep 25, 2025 at 12:15 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,549 POSTS
I can help can you tell me what the code number are? Also do you hear a little rattle from the engine when it is at idle cold? This can be because the timing chain system maybe having problems, please upload a videos in your response of the engine idling so I can hear it.
Sep 26, 2025 at 2:24 AM
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