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

1993 NISSAN 240SX
180,000 MILES • 4 CYL • 2WD • AUTOMATIC
Avatar
JUANFARIASC
  • MEMBER
  • 23 POSTS
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?
Aug 2, 2009 at 4:05 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
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?
Aug 2, 2009 at 8:22 PM
Avatar
JUANFARIASC
  • MEMBER
  • 23 POSTS
no engine light on, last tuned a few weeks ago: how could i check fuel pressure and vaccum leaks?
Aug 3, 2009 at 12:23 PM
Avatar
JUANFARIASC
  • MEMBER
  • 23 POSTS
and it cannt be fuel pressure beacause it rans in the freeway but just feels like it wants to turn off
Aug 3, 2009 at 12:25 PM
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
If the check engine light hasn't been on, I would recommend checking fuel pressure. It may be weak but still working.
Aug 3, 2009 at 3:44 PM
Avatar
JUANFARIASC
  • MEMBER
  • 23 POSTS
what should the fuel pressure be for this car
Aug 4, 2009 at 1:29 AM
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
43PSI with out vacuum / 34PSI with vacuum
Aug 5, 2009 at 12:24 AM
Avatar
JUANFARIASC
  • MEMBER
  • 23 POSTS
i have taken it to a shop and been told its the mass air flow meter-does that sound right?
Aug 5, 2009 at 3:15 PM
Avatar
JUANFARIASC
  • MEMBER
  • 23 POSTS
shop changed the temperature sensor only and now the car runs great
Aug 5, 2009 at 6:18 PM
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
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
Aug 5, 2009 at 6:37 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.