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Check engine light flashes four times within thirty seconds of cold startup

Tiny
MARK BOOTH
  • MEMBER
  • 1994 FORD BRONCO
  • 5.0L
  • V8
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
Engine rpm advances about 500 to a 1,000 rpm's within about ten to twenty seconds of flashing. After you drive awhile the engine has a misfire.
Sunday, March 3rd, 2019 AT 1:29 PM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon.

That is a misfire code.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

How old are the plugs and the rest of the ignition system?

Most cases, it is just replacing the basics for this.

Roy
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Sunday, March 3rd, 2019 AT 1:47 PM
Tiny
MARK BOOTH
  • MEMBER
  • 3 POSTS
Hello Roy,

New distributor not just cap, plugs, wires, computer, EGR valve, map sensor, MAF sensor, new throttle body, O2 sensor and a few others that I probably forgot.
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Sunday, March 3rd, 2019 AT 2:00 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Wow, lots of parts with no results.

I would back up and start with checking the compression check.

https://www.2carpros.com/articles/how-to-test-engine-compression

Roy
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Sunday, March 3rd, 2019 AT 2:09 PM
Tiny
MARK BOOTH
  • MEMBER
  • 3 POSTS
Okay, will do. It will be a few days on that.

Thanks
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Sunday, March 3rd, 2019 AT 2:11 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Keep us updated.

Always glad to help.

Roy
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Sunday, March 3rd, 2019 AT 2:13 PM

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