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Check Engine Light 91 5.0 I have the engine codes

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Old 11-19-2007, 12:17 AM
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unassassinable
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Default Check Engine Light 91 5.0 I have the engine codes

I apoligize for double posting, however, my car is getting worse and I want this post to be seen.

I grounded the STI connector to negative, turned the engine on and these are the results of the "check engine" light blinking:

4 blinks, engine reved to 1500rpm for 45 seconds, then dropped to 1000rpm for 5 seconds, then back to 1500rpm then 1 blink, 3 second pause, 9 blinks, 1 second pause 1 blink, 3 second pause, 3 blinks, 1 second pause, 3 blinks, 3 second pause, 9 blinks, 1 second pause, 1 blink, 3 second pause, 3 blinks, 1 second pause, 3 blinks.

so it blinks a 91 and 33

Thanks guys,

Rich
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Old 11-19-2007, 04:23 PM
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capri_83
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Default RE: Check Engine Light 91 5.0 I have the engine codes

hope this helps
code #33 EGR Valve opening not detected.
code #91 HEGO sensor cicuit indicates system lean (left HEGO)
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Old 11-19-2007, 11:53 PM
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unassassinable
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Default RE: Check Engine Light 91 5.0 I have the engine codes

Thanks for that info. Where did you find this? do you have a link? or book? anything? I would say a majority of my posts on here have been from needing help with engine codes...
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Old 11-19-2007, 11:57 PM
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Default RE: Check Engine Light 91 5.0 I have the engine codes

Never mind I found this link for anyone else who may need help translating their engine codes:

http://autorepair.about.com/library/...bl-dtcs-79.htm

now, does anyone out there know what these mean??

code #33 EGR Valve opening not detected.
code #91 HEGO sensor cicuit indicates system lean (left HEGO)
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Old 11-20-2007, 10:44 AM
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capri_83
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Default RE: Check Engine Light 91 5.0 I have the engine codes

I'm a auto. tech. and we have alldata online......
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