2004 Ford Expedition "common leaks vacuum" Questions

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Question about Ford Expedition

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...there's your vacuum leak! (My bet is that you will find the vacuum line has come off of the automatic parking brake release. This is the most common source of internal vacuum leak in those

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vacuum hoses broken,squished or off. Check at egr valve, dpfe sensor & solenoid. These are all common to go bad. If not obvious take carb cleaner with snorkel attached, spray intake manifold &

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common cause of your problem is the blower motor actuator. This module diverts air from the defroster, to vent, to floor and is vacuum driven. The vacuum leak is usually under the hood starting at the

...leaks special idle valve to the pcv valve Sound like you have a big vacuum leak. Check the hoses that attch the PCV valve on the valve cover on the passenger side. Also reach way back on top of the ...

Question about Ford Expedition

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...leaks (common cause of lean O2 codes) around the intake, use a bottle of propane with a hose spray around the whole intake, all vacuum lines etc. if the idle speed changes u have a leak. Let me know ...

...- 2001 Expedition, 78,000 miles need to know the code. most common codes found in this type vehicle are for Evap, EGR, lean codes for vacuum leaks & misfire codes. let me know ... be glad to ...

...vacuum leak. The most common source is leaking intake/plenum gaskets. When its idleing rough spray some carb spray around the plenum where it bolts to the intake. If the idle changes you found the ...

Question about Ford Expedition

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...common problem on the 03 is a 90 degree vacuum hose being worn, causing a vac leak. Take your cover off the top of the engine - 2 bolts. pretty simple. Start your vehicle up and start listening. ...

...vacuum leak in the intake. Had it changed last year and no problem since. This is common problem with that engine (5.4) Should have been a recall on this problem by Ford. Crown Vic has same problem. ...

Question about Ford Expedition

1 Answer

..."bad" one - Vacuum Leak - pop the hood and listen for a hissing noise )have someone rev it up and down while you listen. A common leak is near the firewall, center of vehicle )a 90 degree rubber

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