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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

HEGO location???

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Old Jan 13, 2008 | 09:00 AM
  #1  
wayneF250's Avatar
wayneF250
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From: Mt.Pleasant, Texas
HEGO location???

I have a 94 F250 , 5.8 (really a stroked 408) , but anyway, my HEGO is located just before the CAT. Converter, and i've gotten rid of that , my question is .....will it help if I moved my HEGO closer to the engine, like just at the bottom of the header????
 
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Old Jan 13, 2008 | 09:08 AM
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It needs to be approximately the same distance as it was before.
 
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Old Jan 13, 2008 | 09:09 AM
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Are you having problems with it in the stock location? I don't think moving it closer will cause any problems, especially not on a batch injected, single O2 sensor setup. I don't know that it will help anything, though, unless it is unable to reach operating temperature at the current location.
 
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Old Jan 13, 2008 | 09:25 AM
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I think it takes longer for it to reach the proper temp . where it is now, since the CAT is gone, also i've converted it to MAF, and now i'm running a mustang computer, w/ an overlay harness. I know a stang requires 2 HEGO's , but the overlay harness compensates for that. I was wondering if it would be more accurate if it were closer to the header..
 
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Old Jan 13, 2008 | 09:32 AM
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Exhaust is exhaust no matter where it is.
 
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Old Jan 13, 2008 | 09:35 AM
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The fact that it is heated, by a resistance winding compensates for the distance from the block. An unheated, single wire O2 sensor has to be snugged up to the block
 
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