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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-06-2004, 12:26 PM   #1
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Driving around last night my SES light came on.. I went out this morning and checked the codes and Im getting a 53... Its not on the list in tech info. What is it??
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Old 07-06-2004, 12:28 PM   #2
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proably a false codes did u try erasing it and then seeing if it comes up again
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Old 07-06-2004, 12:38 PM   #3
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yuh
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Old 07-06-2004, 12:42 PM   #4
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Are you sure it wasn't a 43?

Clear the clodes and drive it for a day. Check again after that.
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Old 07-06-2004, 12:46 PM   #5
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It was definatly a 53 I watched it 4 times to be sure.
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Old 07-06-2004, 12:46 PM   #6
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jus clear and try again
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Old 07-06-2004, 12:47 PM   #7
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DTC 53 EGR flow test failure, it sets when the PCM tests the #1 solenoid and doesn't see the RPM drop it wants 8 out of 12 trys.

Check the wires.

(Page 6E3-A-92)
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Old 07-06-2004, 12:49 PM   #8
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Alright Im clearing them right now.
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Old 07-06-2004, 12:50 PM   #9
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I don't know why that'* not listed in the Techinfo articles. It'* in my FSM. Digital EGR valve on 93. Clean it and lightly oil it.
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Old 07-06-2004, 12:53 PM   #10
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Clean the EGR ?? Sweet... never done that... I love doing new things.
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