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Eengine computer

Tiny
CONFIRMED
  • MEMBER
  • 1999 NISSAN MAXIMA
  • 3.0L
  • 6 CYL
  • AUTOMATIC
  • 120,000 MILES
The car runs great, but I have been told that I have to replace the on board computer because its unable to be read by the emissions test computer. I was told that if there are problems with the computer then the car would show some symptoms, like hard to start or rough idling or other problems, yet my car runs perfect.
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Wednesday, March 2nd, 2016 AT 7:24 PM

4 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It may be just a connection problem at the aldl where scanners hook up have it checked for a blown fuse or shorted wire.
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Thursday, March 3rd, 2016 AT 6:08 AM
Tiny
CONFIRMED
  • MEMBER
  • 3 POSTS
The wires and fuses were checked and they are all good. Thanks for the tip. I just don't want to buy a new computer, and I can't find a used one any where in my area.
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Thursday, March 3rd, 2016 AT 8:52 PM
Tiny
CONFIRMED
  • MEMBER
  • 3 POSTS
Also when you turn key the check engine light does not come on and the bulb for the light is good
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Thursday, March 3rd, 2016 AT 8:56 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
With a bad ecm the light may not come on as that is mostly for sensors etc. A professional will have to install the new ecm due to security. It has to be programmed in as it 'won't start. There are rebuilt ones available so any garage with a professional scanner can install this.
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Friday, March 4th, 2016 AT 6:56 AM

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