MAP sensor problem

1990 TOYOTA CRESSIDA
100,000 MILES • 2.0L • 6 CYL • 2WD • AUTOMATIC
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ALI ALABADI
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  • 3 POSTS
Hello, I have a problem with a MAP sensor for the car listed above, engine 1G-FE. when I drive the car at fifty km per hour and above it vibrates a lot, but when I lift my feet the throttle car is stability or comes back normal. Also, when the car is running at idle speed when I move the MAP sensor with my hand slightly turns off the engine. What is a fix of MAP sensor and how to clean it at home? please help!
Apr 11, 2018 at 7:25 PM
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MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
The MAP is a sealed unit and if faulty it must be replaced. but first make sure that the vacuum line is attached and not split and leaking and the electrical connection is clean and tight.
Apr 12, 2018 at 6:45 AM
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ALI ALABADI
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  • 3 POSTS
Hello, Finally a MAP sensor has been fixed. my car engine is running smoothly, but engine is a little little bit shaking I unknown where from. please help!
Apr 13, 2018 at 12:15 PM
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STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
That engine was never a smooth running design. However, if it had been running with misfires and extra fuel due to the bad MAP then I would probably pull the plugs and clean/gap them at least or replace them if they are badly carbon fouled.
Apr 13, 2018 at 4:08 PM
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ALI ALABADI
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yes, thank you very much
Apr 14, 2018 at 6:53 AM
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