ITB Troubles
08-31-2007, 11:37 AM
#21
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Originally Posted by alejo,Aug 31 2007, 10:42 AM
good to know 
now i have to figure out what is causing the power loss and rough idle. 
now i have to figure out what is causing the power loss and rough idle. 
08-31-2007, 12:56 PM
#23
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Originally Posted by alejo,Aug 31 2007, 12:20 PM
new 02 sensor is on. i'm wondering what could cause the AFR to go off suddenly
What new 02 sensor did you use?
08-31-2007, 01:53 PM
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Originally Posted by RWD_RCKT,Aug 31 2007, 01:56 PM
02 sensor tells the ECU what the AFR is so the ECU can correct it! O2 sensor goes bad... AFR goes in the toilet. 02 sensors go bad... fact of life. They normally don't die in a month... more like 75k miles... or like 20k miles if you use leaded gas.
What new 02 sensor did you use?
What new 02 sensor did you use?
09-01-2007, 06:16 AM
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changed the sensor for an older one I had and the AFR changed from a flickering +-7 to a steady 8.16, still rich 
- compression and leak down next I guess
- compression and leak down next I guess
09-01-2007, 06:50 AM
#26
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check your vacuum lines next for a leak or a blockage. I had a small hole develop in the vacuum line from my #2 runner and it threw everything out of whack. My map went way rich, especially under load, but not as bad as yours....I'd pull each vacuum line off and check the connections, flow, and tubing to make sure everything is ok on the vacuum side. Since you're running MAP based, this will defenately cause symptoms similar to what you're describing.
09-03-2007, 09:55 AM
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Originally Posted by RWD_RCKT,Sep 3 2007, 10:50 AM
Asura Designs to the rescue!!!
Asura and RWD_RCKT to the rescue indeed - these guys came over and figured out the AEM settings had changed. We can't figure out if it was the result of the open loop left by the initial tune or what. TPS was left at 75% - asura fixed the AFR and idling. car's running very strong again
09-03-2007, 10:00 AM
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Originally Posted by alejo,Sep 3 2007, 09:55 AM
Asura and RWD_RCKT to the rescue indeed - these guys came over and figured out the AEM settings had changed. We can't figure out if it was the result of the open loop left by the initial tune or what. TPS was left at 75% - asura fixed the AFR and idling. car's running very strong again Good to hear !!!!