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Turn on the headlights it stalls the engine?

Tiny
FATMAN2583
  • MEMBER
  • 2005 MERCURY MOUNTAINEER
  • 4.0L
  • V6
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
When the engine is running and you turn on the headlights it stalls the engine unless you unplug the drivers side headlight then it will stay running?
Thursday, February 5th, 2015 AT 12:00 PM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check for a bad bulb or as short in wiring there.
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Thursday, February 5th, 2015 AT 12:08 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,536 POSTS
Yep, you have a shorted bulb or bulb socket. I would remove the bulb assembly and look for burn marks. Here is a video to show you how.

https://youtu.be/as1oRCWu4nI?si=FiB8Ap1yd5ZBrLfq

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Saturday, July 20th, 2024 AT 1:32 PM

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