2001 Ford F-150 map sensor vacuum lines

2001 FORD F-150
155,650 MILES • 5.4L • V8 • 4WD • AUTOMATIC
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NICHOLAS IN OREGON
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  • 1 POST
I keep blowing off the vacuum lines on the map sensor any ideas?
Mar 10, 2015 at 1:04 PM
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HMAC300
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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they may be oily and it may have a back fire causing that. Check to see if they are very soft and oily if they are try replacing the coupler. Map sensor lines should be vacuum though not pressure. if there is pressure there then it may be hooked to wrong place or something seriously wrong with the engine.
Mar 10, 2015 at 3:02 PM