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1996 Cadillac Deville Emissions light/ service engine soon

Tiny
JA'MES AMMONS
  • MEMBER
  • 1996 CADILLAC DEVILLE
1996 Cadillac Deville V8 Front Wheel Drive Automatic

My emissions and service engine soon light came on for the second time. (The first time they came on I had them reset.) I took it to a place to have them check it out to see what the code would say. I was told that I have a slow responding O2 senor. They think I should have a total injection cleaning. Is this correct? Or is there something else? Thanks in advance for your help.
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Saturday, April 11th, 2009 AT 10:36 PM

2 Replies

Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
I would start with replacing the slow injector.
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Friday, April 17th, 2009 AT 2:49 PM
Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
Was it by chance a p0139? I believe there is a calibration upgrade that can be performed on the pcm to address this. I doubt the injection flush will cure it.
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Friday, April 17th, 2009 AT 10:42 PM

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