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1997 to 2003 F-150 4.2L, 4.6L, and 5.4L equipped F-150s. |
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#1
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I have a Grpyhon on my truck that Bill custom wrote me a tune for so that i can run my 5.4l engine on my 4.6l coil pack/ecm setup.
Anyways, i know for a fact that his custom tuning blocks the rear O2 sensors, because when i put my long tubes on and got rid of my cats, i never got a code. But here in the past year or so my truck has developed a rough hesitation from 1100-1450 rpm. It barley wants to pull through it, but once its to 1500, it runs perfectly. And it runs great everywhere else in the power band. I also have no relivant codes to this issue. Does the custom tuning also block codes for the front O2 sensors? Im very close to changeing them out, they do have 225k miles on them. What kind of symptoms on these ECM's would you get? I know bad o2 sensors can make different symptoms based on how smart the ECM. Thanks |
#2
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The front O2's are still needed so they are not blocked....
Try to do some cleaning of the tb/iat and maf, change your fuel filter also.....
__________________
SENIOR MODERATOR--PTLA God doesn't have a Facebook but he's my friend. God doesn't have a twitter, but I follow him. |
#3
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I know that the engine is still reading them, i just didnt know if it would still show a code or not.
I will take a look at the TB/IAT. |
#4
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![]() Quote:
But As the miles increase on these sensors the reaction time becomes slower....
__________________
SENIOR MODERATOR--PTLA God doesn't have a Facebook but he's my friend. God doesn't have a twitter, but I follow him. |
#5
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So with 225k on my original sensors, They could be causing my hesitation from 1100-1400 rpm. They are working, but the engine is leaning out possible?
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#6
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With 225k miles changing them might be in your best interest ......
__________________
SENIOR MODERATOR--PTLA God doesn't have a Facebook but he's my friend. God doesn't have a twitter, but I follow him. |
#7
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Front O2 sensors are highly suspect.
__________________
Bill Cohron - The Mad Doctor ![]() ![]() ![]() Power Hungry Performance - The ORIGINAL in Ford performance tuning... Since 1997! (678) 890-1110 www.gopowerhungry.com - Home of the Hydra Chip, Minotaur Tuning Software, and the new Orion Reflash System for Navistar! Bring back ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Much to my surprise, I'm actually quite enjoying Linux! ![]() |
#8
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Awsome, thanks Bill.
I though they would be a possibility, but with no codes being thrown. I didnt know for sure. |
#9
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On another note.
Bill, Will you be doing any custom tuning for the 2011 Mustang GT 5.0? Got one of those in the garage, and i hear they can make some serious gains in stock form with tuning. |
#10
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I have plans to work on those. My neighbor is a dealer rep for ford and has access to all sorts of nice vehicles. No specific timeline on that though, as I have a number of other projects that need to be addressed first.
__________________
Bill Cohron - The Mad Doctor ![]() ![]() ![]() Power Hungry Performance - The ORIGINAL in Ford performance tuning... Since 1997! (678) 890-1110 www.gopowerhungry.com - Home of the Hydra Chip, Minotaur Tuning Software, and the new Orion Reflash System for Navistar! Bring back ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Much to my surprise, I'm actually quite enjoying Linux! ![]() |
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