Calling All F Cam Owners....Please Help

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claytucc3

New Member

Mar 9, 2003

825

0

0

Santa Clarita, Ca

Feb 12, 2009

#1

• Feb 12, 2009

• #1

My question is: What is your Air/Fuel ratio at idle? I can't seem to get to the magic 14/15. I am bouncing between 18/19 at idle and it goes down to the correct range at throttle. Is this normal for this cam? I know it has poorer idle quality and that the a/f ratio is going to be off but is this normal?

 

BK_CAULEY

it's built for speed not longevity, woman

Dec 26, 2006

0

10

49

Thomasville, ga

Feb 12, 2009

#2

• Feb 12, 2009

• #2

no its not. and the cam isnt going to throw of your afr's. you need to make sure all sensors are plugged up and working. sounds like an ect sensor problem to me.

 

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claytucc3

New Member

Mar 9, 2003

825

0

0

Santa Clarita, Ca

Feb 12, 2009

#3

• Feb 12, 2009

• #3

I have already went through all of the sensors. Correct me if I am wrong, but with a larger cam the intake and exhaust valves are open at the same time due to the more aggressive lift. This would in turn throw off the a/f ratio at a slower rotation speed "idle"

 

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claytucc3

New Member

Mar 9, 2003

825

0

0

Santa Clarita, Ca

Feb 12, 2009

#4

• Feb 12, 2009

• #4

It is also not throwing any codes...the only code it throws is because the charcoal canister purge valve is missing. I went through all of the vacuum lines also.

 

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claytucc3

New Member

Mar 9, 2003

825

0

0

Santa Clarita, Ca

Feb 14, 2009

#5

• Feb 14, 2009

• #5

Okay, I got the idle A/F ratio fixed finally, the air pump hoses were installed opposite and a custom tune.