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Discussion Starter · #1 · (Edited)
I have a 2003 focus SE with the zetec 2.0L dual overhead cam engine. Whenever I'm getting into it or trying to get up to cruising speed (50mph+) the hose that goes from the valve cover into the air breather Box will blow out of the breather Box side and disconnect itself. The car does not want to run at idle I have to have my foot on the gas to keep it going or whenever I'm at a light or stopped. The brake pedal is extremely stiff unless I'm revving the car over 2 grand and then it softens up and I'm having some kinda gas or exhaust fumes in the cabin when I turn my heater on and am going below 30mph.

I've replaced the PCV valve, PCV hose, and all the vacuum lines I could find or identify using ford vacuum line diagram. (When I bought car it had no vacuum lines and a split open pcv valve hose). I have ordered a new EGR valve delete plate, header and IAC valve.


Can anyone help me with troubleshooting the above mentioned issues? Please and thank you for taking time to read and/or reply. Car is currently immobile so I can't scan codes to see what issue is although when using the dash menu the option thats supposed to show the engine codes being thrown says none even tho lights on. I thought a clogged catalytic converter and bad IAC valve so that's why I ordered those plus I got them cheap af stainless header and cat delete pipe was only 150, cat back exhaust was only 130, delete plate was 20 and the IAC was 30. Car has 160k miles.
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I've ran on new vacuum lines and hose clamps on on the engine following the vacuum hose diagram from Ford. I checked again and they aren't cracked, broke or have any loose clamps. Could there be another issue with vacuum system I'm not aware of to check for or wasn't aware of to address when I replaced said lines? The only hose that isn't new is the one that goes from the valve cover to the breather Box. What are the different possible issues that I could be facing with those symptoms so I could start going through and marking them off list? If you need anymore info or anything for troubleshooting or diagnosis just ask I can do my best to give as much possible info as I can. I am a single parent with 3 boys (3 year old and twin 5 year olds) and this is our only means of transportation and funds are tight so I have to try to get it figured out or at least drivable with no gas/exhaust fumes in car giving headaches, watery eyes, burning nose or dizziness so they aren't in danger and therefore no possibility of harm. Again any time spent helping is most definitely greatly appreciated. Thanks again.
 

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Discussion Starter · #3 ·
Okay thanks so much tomorrow I'm going to see about where cheapest place to rent/buy a compression tester is or the cheapest local place that will test it for me and I'll get back to you with the results asap.
 

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Other thread here with more discussion - Can a mod merge?

 
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