2001 Mazda Millenia Begin Several Things Been Done Fix This Car Engine Light

2001 MAZDA MILLENIA
85,000 MILES
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BIGDADDY1967
  • MEMBER
  • 1 POST
where do I begin. several things have been done to fix this car. no engine light. But when the car get up to highway speeds ( 60-70 mph) the car flutters and feels ready to cutoff but doesn't. O2 sensors, spark plugs, supercharger, egr valve, pcm computer, map sensor, maf sensor, all new vacuum hoses (could be the problem because the hoses are hard to put in proper places) have all been replaced. No fault codes in the computer. Fuel pump and regulator was checked. Help!!!!!
Feb 17, 2013 at 4:06 AM
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ASEMASTER6371
  • ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
what is the actual fuel pressure reading??

has the back pressure been checked for the cat converter??? thats my bet.

Roy
Feb 17, 2013 at 12:43 PM
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