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1993 Nissan 240SX cars feels like it wants to turn off when

Tiny
JUANFARIASC
  • MEMBER
  • 1993 NISSAN 240SX
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
When I give it gas it feels like it wants to turn off (miss fire/ losses power) what can it be? Things I have done: changed EGR and full maintance on the car. Can it be the the air flow meter?
Sunday, August 2nd, 2009 AT 4:05 PM

9 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
It could be the mass air flow sensor, but it would have set a code in the computer turning on the check engine light. Have you checked for vacuum leaks, fuel pressure, and when was it last tuned up?
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Sunday, August 2nd, 2009 AT 8:22 PM
Tiny
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No engine light on, last tuned a few weeks ago: how could I check fuel pressure and vaccum leaks?
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Monday, August 3rd, 2009 AT 12:23 PM
Tiny
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And it cannt be fuel pressure beacause it rans in the freeway but just feels like it wants to turn off
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Monday, August 3rd, 2009 AT 12:25 PM
Tiny
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  • MECHANIC
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If the check engine light hasn't been on, I would recommend checking fuel pressure. It may be weak but still working.
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Monday, August 3rd, 2009 AT 3:44 PM
Tiny
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What should the fuel pressure be for this car
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Tuesday, August 4th, 2009 AT 1:29 AM
Tiny
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  • MECHANIC
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43PSI with out vacuum / 34PSI with vacuum
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Wednesday, August 5th, 2009 AT 12:24 AM
Tiny
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I have taken it to a shop and been told its the mass air flow meter-does that sound right?
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Wednesday, August 5th, 2009 AT 3:15 PM
Tiny
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Shop changed the temperature sensor only and now the car runs great
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Wednesday, August 5th, 2009 AT 6:18 PM
Tiny
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  • MECHANIC
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That will do it. The sensor tells the computer the temp and the computer determines how rich or lean to run the fuel mixture.

Glad you got it fixed. Let us know if you have other questions, and thanks for using 2carpros. Com.

Joe
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Wednesday, August 5th, 2009 AT 6:37 PM

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