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1999 Mazda Protege maf sensor problems

Tiny
CRUSHA01
  • MEMBER
  • 1999 MAZDA PROTEGE
  • 1.5L
  • 2WD
  • AUTOMATIC
I'm convinced that my mass air flow sensor is bad but I wanna be sure before I replace it. I've been getting a lot of symptoms that lead to this. Includes; hesitation when sudden acceleration, stalling when reversing on hills sometimes, cold hard start etc. Today I removed the sensor while car was idling and idling speed drop, sound like it wanted to cut off but it remained running. Is that a sign that its bad?
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Saturday, March 22nd, 2014 AT 8:51 AM

3 Replies

Tiny
HOMER1967
  • MECHANIC
  • 875 POSTS
No, thatis normal, the reversing and stalling on a hill have nothing to do with the m.A.F. Sensor. The only was to diagnose the sensor is to view the grams or volts that is produces under certain rpm's and loads. So you need some one with a scanner who knows what they are looking at. The best bet is to have it diagnose by a shop and then you could replace the part yourself.
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Saturday, March 22nd, 2014 AT 6:53 PM
Tiny
CRUSHA01
  • MEMBER
  • 19 POSTS
OK. So the reversing problem can be transmission related?
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Saturday, March 22nd, 2014 AT 6:58 PM
Tiny
HOMER1967
  • MECHANIC
  • 875 POSTS
Yea, I could be. Or it could be a wiring issue that gets pulled or twisted when the motor goes it the opposite direction when it reverse.
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Saturday, March 22nd, 2014 AT 7:28 PM

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