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Mazda Miata running rough. Ive. Took to ahop they cant figure it out either

Tiny
REEDBONE
  • MEMBER
  • 1990 MAZDA MIATA
  • 202,000 MILES
I have a 90 mazda miata and it runs really rough like low idle around 250 rpms sometimes I can. Accelerate all way to floor and nothin happens it will still idle and I have to let it warm up for a lil while before I can raise the rpms to move it but when I go to move I have to raise the rpms to 4000 or it will try to shut off ive checked mass air flow meter and ive checked timing belt also check catalytic converter and idk what else I need help no to see ody I took to can fure it out and ive ch ecked ecu to see if it was ground out anything its not plz help
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Sunday, July 8th, 2012 AT 10:07 PM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Go to this walk thru link: https://www.2carpros.com/articles/engine-misfires-or-runs-rough
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Sunday, July 8th, 2012 AT 10:42 PM
Tiny
REEDBONE
  • MEMBER
  • 75 POSTS
I just did and ive done almost everything it says onky think is I dont have a comprdoeasion teste anything else
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Sunday, July 8th, 2012 AT 11:11 PM
Tiny
REEDBONE
  • MEMBER
  • 75 POSTS
I need help I dont know what to do anymore
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Monday, July 9th, 2012 AT 1:08 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have a check engine light? If it can idle try checking the ignition timing and fuel pressure with a gauge if its within normal specs
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Monday, July 9th, 2012 AT 1:51 AM

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