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Old 05-28-2009, 02:23 AM   #1
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Question 02 Zetec and Steeda CAI

I have a Zetec Auto which seems to run fine with the stock intake. When I install the Steeda cold air intake it bogs and makes no power below 2000 RPM then it pulls better than stock after 3500 RPM. Is this typical? I also get a P0455 engine code (EVAP Emission Control System Leak - Large) and now the Check fuel cap light is on also.
Do I have a leak and it is more sensitive with this intake, or is this typical with the automatic trans?



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Old 05-28-2009, 03:10 AM   #2
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did you attach the line from the intake to the top of the valve cover? It could be a vaccuum leak from that problem. Or it could be a completely different problem all together and just happened to creep up right after you changed the intake.
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Old 05-28-2009, 04:36 AM   #3
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Originally Posted by zetecDon View Post
did you attach the line from the intake to the top of the valve cover? It could be a vaccuum leak from that problem. Or it could be a completely different problem all together and just happened to creep up right after you changed the intake.
x2 sounds like it doesn't it.
I have this seup with my FR mani and no problem
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Old 05-28-2009, 04:53 PM   #4
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did you reset your ecu after you swapped the intake? if not, that's probably the simplest thing you could try. it might be having a hard time adjusting to the change in air flow.
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Old 05-28-2009, 06:00 PM   #5
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The evap system is not going to fault with an intake. Its not a related problem.

You might need to check the charcoal canister and the lines running to it or the fuel cap.
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Old 05-29-2009, 06:57 PM   #6
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Vacuum to Valve cover is hooked up.
What I know about the EVAP system (in a nut shell) is that it takes the vapor from the tank and burns it. The canister seems to be a subject that people talk about. I will check that. The cap seems ok to me. But it is 7 years old and comes of 1-2 time a week to fill it, so that could be an issue.
I did not reset the ECU. I'm going to leave the battery off for an hour while I check the other stuff.
FocusRacingAustrali - thanks for telling me you have the same setup. But it sounds like you have a more advances setup.
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