I have a short somewhere

175,000 MILES
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SCNAVIGATOR
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Lincoln Navigator makes howling noise and doesn't idle properly sometimes headlights flicker and sometimes it stalls makes a low howling noise like a distant foghorn and surges idle from 500 to 1200 rpms happens sometimes when air ride compressor comes on.
Nov 17, 2011 at 5:30 PM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
try cleaning your throttleplateand iac with choke cleaner. the iac may be searching causin gyour problem. make sure to hook up duct work after cleaning and it will start hard.
Nov 17, 2011 at 5:46 PM
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SCNAVIGATOR
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had it cleaned by mechanic but after 1 day problem came back...maybe replace?
Nov 17, 2011 at 7:29 PM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
have him check the iac/throttle plate then
Nov 18, 2011 at 6:25 AM
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