1994 Mazda Miata Acceleration Hiccup

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ICYFLAME68
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  • 2 POSTS
1994 Mazda Miata, 1.8L, 157,000 miles. Hi! For the past month the engine has been cutting out when I accelerate, like what happens when you give too much clutch and not enough gas when shifting, except this isn't during shifting and the engine never dies, it just...well, hiccups. It occurs in any gear and is particularly annoying when I'm trying to pass on the freeway. So far, a) I have had the fuel filter replaced, b) the fuel pump has checked out fine on a pressure test, c) I've ran fuel injector cleaners through (such as STP), d) the spark plugs look great, and e) the air filter is clean as well. I'm running out of ideas with my limited auto knowledge. Is this less a problem with fuel and more with the electrical components? Do coil packs go bad? Thanks for any input.
May 25, 2007 at 3:28 PM
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KSAULT
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I have a 1990 Mazda Miata ~80000 miles and just started to experience the exact same problem about a week ago. Have you had any luck figuring out what's going on? Any help would be greatly appreciated. Thank you.
Jun 1, 2007 at 9:03 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
[quote:fe35a8aa52="icyflame68"]1994 Mazda Miata, 1.8L, 157,000 miles. Hi! For the past month the engine has been cutting out when I accelerate, like what happens when you give too much clutch and not enough gas when shifting, except this isn't during shifting and the engine never dies, it just...well, hiccups. It occurs in any gear and is particularly annoying when I'm trying to pass on the freeway. So far, a) I have had the fuel filter replaced, b) the fuel pump has checked out fine on a pressure test, c) I've ran fuel injector cleaners through (such as STP), d) the spark plugs look great, and e) the air filter is clean as well. I'm running out of ideas with my limited auto knowledge. Is this less a problem with fuel and more with the electrical components? Do coil packs go bad? Thanks for any input.[/quote:fe35a8aa52]

Check your throttle position sensor
Jun 1, 2007 at 10:30 AM

Suggested Repair

Check the throttle position sensor.

Conversation Summary

A 1994 Mazda Miata owner reported the engine hiccupping or cutting out under acceleration in any gear, without stalling, especially when passing. Fuel filter replacement, a fuel-pump pressure test, injector cleaner, spark plugs, and the air filter had not resolved it. Another owner of a 1990 Miata reported the same symptom. The expert advised checking the throttle position sensor.

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