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OBD-1 Trouble Code. Please Help!

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Old 10-24-2006, 06:31 AM
  #11  
95 droptop
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Default RE: OBD-1 Trouble Code. Please Help!

How do you do the self tests. Because when i just running around town i have no lights. but after i go faster than 35 i have cel's on an off all the time but i had it scanned and nothing came up. car is running like ****.
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Old 10-24-2006, 10:41 AM
  #12  
Joel5.0
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Default RE: OBD-1 Trouble Code. Please Help!

ORIGINAL: Bigdogbowl

Changed out my MAF sensor. Fixed the codes 172,176,181,189 and 556. Reset computer and no more codes but still a spark knock/ping. Did a KOER test and came up with:


311 Air system inoperative during KOER (Bank number 1 with dual heated oxygen sensors)
314 Air system inoperative during KOER (Bank number 2 with dual heated oxygen sensors)

It obviously sounds like my O2 sensors are bad but i have changed them about 5 months ago. They are the ones in my pipes right infron/under my firewall.

Are there anymore that i am not aware of?
FYI......Codes 311 and 314 are smog (Thermactor system) related codes....not O2 problems, and they only show up in the KOER self-test if you have the system disconnected.
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Old 10-24-2006, 01:19 PM
  #13  
Bigdogbowl
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Default RE: OBD-1 Trouble Code. Please Help!

Question? So if the air pump is not working properly to pump hot exhaut gasses back into the intake. That could explain why my car gets to running temp that I get a spark knock/detonatoin/ping when under load?
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Old 10-24-2006, 03:16 PM
  #14  
Joel5.0
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Default RE: OBD-1 Trouble Code. Please Help!

The air pump injects air into the exhaust stream, not back into the intake.....that would be the EGR system's job....and you don't have EGR related codes.
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