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#1
08-07-2014, 02:27 AM
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Fault code 5E
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#2
08-07-2014, 09:16 AM
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Replaced the MAF with an OEM or genuine Seimens MAF or some cheap crap you brought on fleabay or Amazon?
__________________
2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD
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#4
08-07-2014, 10:23 AM
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I think you have an evap problem. Something is not sealing the gas tank (could be a loose fuel cap) or a leaky hose. How long have this been going on?
__________________
2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD
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#5
08-07-2014, 10:51 AM
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A couple of weeks. My car now has about 90k miles on it (not sure if relevant to my issue).
This weekend, I will look look around the engine bay again and check for vacuum leaks. If I cant find any leaks...have no choice but to send to my local dealership and have them diagnose the issue.
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#6
08-07-2014, 01:01 PM
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An evap leak is not a vacuum leak. The evap system controls the gas fumes in the gas tank. There is a pump that pressurize the system and a sensor that tells the computer that the system is not leaking.
__________________
2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD
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#7
08-07-2014, 01:30 PM
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I'm guessing your purge valve may be clogged or taken a dump (just a guess)
do you normally fill up at the gas station with the car running?
__________________
2018 Ram 2500 6.7L Cummins 68RFE 19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed 2013 X5 35D (CEO's) - Born on 5/17/2013 - 82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards
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#8
08-07-2014, 11:38 PM
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My car is always off when i fill up. Im not a mechanic so I have no clue what can cause a 5e fault code but just to clarify a fuel evap problem can cause the 5e (secondary-air hot-film air-mass sensor) fault code?
I also monitored my car earlier using my obd reader and I found out that the fault code shows up only during cold start. When I clear the fault code after a cold start, it wont come back until the next cold start. I also noticed that the secondary air pump is only active for 3 seconds during a cold start. Is this normal?
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#9
08-08-2014, 06:35 AM
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Not sure what vehicle you have, but on my 1998 E36 328 the secondary pump ran much longer than 3 sec on cold start ups. Not sure if that has anything to do with the 5E error, just giving you a data point.
__________________
Daily Drivers: - 2008 535i, 320,000km - 2004 X5 4.4, 01/2004 production, 420,000km - 1997 328i, 350,000km Track: - 1996 328i, track/race car, ~300,000km Winter: - 2013 Ski-Doo MXZ X 800 E-TEC, trail can - 2007 Ski-Doo MXZ Blizzard 800 HO - 2001 Ski-Doo MXZ 600 w/800 engine, exhaust - 1978 Ski-Doo Olympique 340 (vintage race sled) - 1977 Ski-Doo Olympique 340E 
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#10
08-08-2014, 06:48 AM
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Secondary air pump should run a lot longer than 3 seconds.
__________________
2018 Ram 2500 6.7L Cummins 68RFE 19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed 2013 X5 35D (CEO's) - Born on 5/17/2013 - 82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards
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