Check engine light will it flash one single time when you initially turn ignition key on

Tiny
DOUGLAS CHEEK
  • MEMBER
  • 1998 MERCURY MOUNTAINEER
  • 5.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 330,000 MILES
When all codes are eliminated check engine light stays off while running will it flash one single time when you initially turn ignition key on.
Saturday, July 20th, 2019 AT 4:21 AM

1 Reply

Tiny
BMDOUBLE
  • MECHANIC
  • 1,139 POSTS
Yes that is normal, if I understand you correctly. Get in, start the vehicle, cel light initially comes on then turns off, normal operation, it is a prove out for the warning lamp.
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Saturday, July 20th, 2019 AT 7:29 AM

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