06-25-2009, 04:55 PM
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#1 |
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Registered User
Age: 20
Join Date: Jan 2009
Posts: 106
Location: User is: OffLine |
truck running wayyyy rich
ok truck running way way rich will hardly idle at all someone give me an idea as to why map sensor fine coolant temp sensor fine throttle positon fine someone shed some light on this one by the way 93 s10 2.8
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06-25-2009, 10:19 PM
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#2 |
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Registered User
Age: 35
Join Date: Jan 2006
Posts: 452
Location: Grande Prairie AB User is: OffLine |
Re: truck running wayyyy rich
If your O2 sensor is not working your truck will run rich. Are you seeing a SES light in your dash?
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06-25-2009, 10:29 PM
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#3 |
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Certified Auto HVAC Tech
Age: 20
Join Date: Jun 2007
Posts: 7,454
Location: Camden, AR User is: OffLine |
Re: truck running wayyyy rich
It's an OBD1 vehicle...it very well could be the O2 sensor and the SES light never come on....very easy to trick  next question...how did you go about checking those other sensors |
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06-25-2009, 11:33 PM
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#4 |
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first car and proud
Age: 16
Join Date: Jul 2008
Posts: 735
Location: Lebanon, IN User is: OffLine |
Re: truck running wayyyy rich
My vote is O2 sensor. I changed mine when i got my truck and it was one of the most noticable improvements i made to the truck.
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06-26-2009, 12:43 AM
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#5 |
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Registered User
Age: 20
Join Date: Jan 2009
Posts: 106
Location: User is: OffLine |
Re: truck running wayyyy rich
hooked it up to my diagnostic machine anyone else have any clue and its not the 02 sensor been replaced already
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06-26-2009, 01:06 AM
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#6 |
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Registered User
Age: 48
Join Date: May 2009
Posts: 270
Location: Gulf Coast - AL User is: OffLine |
Re: truck running wayyyy rich
pop the air filter and look at what the TBI's are doing: spray or pouring?
does your 'diagnostic machine' give any engine codes? I just call mine a 'paper clip' .. |
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