1991 Mazda MX5 Looses power

Tiny
LVYOUNIS
  • MEMBER
  • 1991 MAZDA MX5
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 63,500 MILES
My car looses power on the highway, traveling at 55 -65 then it loose speed. Giving it more gas doesn't help. I've had to pull over and just wait. It has been getting worse over the past couple of months.

The car isn't driven far. Maybe 100 miles a week. I've had this happen on morning when it's cold and damp outside. I've had it happen when it's warm and sunny. The car has been wrecked in the left rear and had lights and quarter panel replaced.

I only purchased it last October. I have all the service records. I just wondered what you thought.
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Tuesday, March 9th, 2010 AT 2:56 PM

1 Reply

Tiny
RASMATAZ
  • MEMBER
Hi lvyounis, Welcome to 2carpros and TY for the donation

Inspect and test all the following listed below and get back with some testing results for evaluation

Oxygen sensor.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.
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Tuesday, March 9th, 2010 AT 6:06 PM

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