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Subject: "Lean at idle????" Previous topic | Next topic
jdpilotJun-01-05 02:41 PM
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#90115, "Lean at idle????"


          

I am puzzled. I just started driving the car more and more. Shes been a garage bitch for the last year or so. Anyway. I am getting low A/F readings. I have a useless blinky light gauge and my blue wire on my safc hooked up. Anyway, I have noticed lately that I am lean (.1xx through .79x) at idle. Now I don't remember what I was at last year. However, I have installed a 57mm TB, Ported and polished upper and lower mani with CAI and header/cat/catback exhaust. Is it possible that I am getting that much more air with the TB and mani?? Or do you think the SAFC is putting too much load on the O2 Sensor?? I may unplug the blue wire and see if it makes a diff, I thought I'd bounce it off you guys first..Lates


Second Place "Sanford Sound SLAP 2005" Mild 2-Door
http://www.sanfordsound.com/carwash2005.htm
Second Place "Scrapefest 2002" 2nd Gen Mild
1995 GS AT, 97-99 Conversion.
2000 BMW Z3 2.8
1999 Chevy K2500 crew cab
5 jets skis, 3 snowmobiles, 2 ATVs. BRAAP!
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Replies to this topic
RE: Lean at idle????, turbo8u, Jun-01-05 02:44 PM, #1
RE: Lean at idle????, jdpilot, Jun-01-05 02:48 PM, #2
      RE: Lean at idle????, turbo8u, Jun-01-05 03:39 PM, #3
           RE: Lean at idle????, Ducking_Fumbass, Jun-02-05 04:49 AM, #4
                RE: Lean at idle????, Keith2172, Jun-02-05 05:18 AM, #5
                     RE: Lean at idle????, turbo8u, Jun-02-05 07:29 AM, #6
                          RE: Lean at idle????, Ducking_Fumbass, Jun-02-05 08:25 AM, #7

turbo8uJun-01-05 02:44 PM
Member since Jun 15th 2003
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#90116, "RE: Lean at idle????"
In response to Reply # 0




          

at idle, it should cycle between .2 and .8 volts

sounds to me like you're fine brutha

  

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jdpilotJun-01-05 02:48 PM
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#90117, "RE: Lean at idle????"
In response to Reply # 1


          

Brilliant! I searched and couldn't locate idle voltage. Thanks my man!!


Second Place "Sanford Sound SLAP 2005" Mild 2-Door
http://www.sanfordsound.com/carwash2005.htm
Second Place "Scrapefest 2002" 2nd Gen Mild
1995 GS AT, 97-99 Conversion.
2000 BMW Z3 2.8
1999 Chevy K2500 crew cab
5 jets skis, 3 snowmobiles, 2 ATVs. BRAAP!
Member # 1147

  

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turbo8uJun-01-05 03:39 PM
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#90119, "RE: Lean at idle????"
In response to Reply # 2




          

Originally posted by jdpilot
Brilliant! I searched and couldn't locate idle voltage. Thanks my man!!


yea no worries

a better way to see whats going on is to get in there and datalog the stock ecu, the fuel trims will tell you a lot

  

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Ducking_FumbassJun-02-05 04:49 AM
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#90136, "RE: Lean at idle????"
In response to Reply # 3


          

A/F ratio at idle is mostly unimportant. The engine isn't under enough load to knock, and if it does knock, who cares? It's at idle!

  

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Keith2172Jun-02-05 05:18 AM
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#90140, "RE: Lean at idle????"
In response to Reply # 4


          

Originally posted by Ducking_Fumbass
A/F ratio at idle is mostly unimportant. The engine isn't under enough load to knock, and if it does knock, who cares? It's at idle!


If your engine knocks at idle then you probably have a bigger problem than just fuel maps!

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(I think I'm the only member emoji )

  

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turbo8uJun-02-05 07:29 AM
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#90148, "RE: Lean at idle????"
In response to Reply # 5




          

Originally posted by Keith2172
If your engine knocks at idle then you probably have a bigger problem than just fuel maps!


or you have some sexy forged slugs and theyre warming up emoji

  

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Ducking_FumbassJun-02-05 08:25 AM
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#90154, "RE: Lean at idle????"
In response to Reply # 6


          

I wouldn't call that 'knock' per se, though...

  

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