LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Codes 26, 27

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Old Nov 3, 2013 | 07:55 AM
  #1  
Chet1185's Avatar
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From: Pennsylvania
Codes 26, 27

I did do the egr delete and haven't had it tuned yet. Is the other code because of that also. I clear the codes and they immediately come back.

I did replace the purge solenoid with a different one and the code still comes up.
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Old Nov 3, 2013 | 10:20 AM
  #2  
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From: Hell was full so they sent me to NJ
Re: Codes 26, 27

You can look them up on Shoebox:

http://shbox.com/1/Dtcs.htm

For the EVAP and EGR solenoids. Did you also delete the EVAP system?
Old Nov 3, 2013 | 12:20 PM
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Re: Codes 26, 27

I only deleted air and egr. Besides the solenoid is there anything else to replace for the evap code?

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Old Nov 3, 2013 | 01:26 PM
  #4  
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From: Hell was full so they sent me to NJ
Re: Codes 26, 27

The electrical circuit for the EVAP purge solenoid does not match the commanded state. There could be a short in the wires, an open in the wires or an electrical fault in the solenoid. OR maybe it's not plugged in.
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