Problems: low power when driving

Tiny
ANONYMOUS
  • 1991 MAZDA MIATA
  • 193,000 MILES

Problems: low power when driving.
I have changed the GN10047 ignition coil and installed new NGK spark plugs. But still have same problems. When I drive it and turn on the A/C the power reduces even more. Can you answer my problems with my 1991 Miata MX5?

Thursday, October 18th, 2012 AT 3:46 PM

1 Reply

Tiny
HMAC300
  • EXPERT
  • 47,591 POSTS

Scan for codes and check fuel pressure first. Then check vacuum at idle if 15" or below suspect clogged converter

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Thursday, October 18th, 2012 AT 4:54 PM

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