Check Engine Light
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Elder User
Joined: Aug 2005
Posts: 566
Likes: 3
From: New Jersey
Check Engine Light
Hi guys. When you first turn on your ignition, does your check engine light come on and if so, for how long? I have some poor running conditions that I'm sure would ordinarily light the CE light. My light flashes for a millisecond. Most cars and trucks I've driven over the years have the light come on for at least one or two seconds. Thanks.
Postmaster
Joined: Jun 2014
Posts: 3,206
Likes: 3
From: Oakhust NJ Jersey Shore
Yea I have a late 99 and my CE light comes on for a split second, than comes back on for 2 seconds. I tried it 3 times while I was typing this post. Get a quick flash than right back on for a couple seconds.
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
^^^^^ That's normal. It's actually about 1/8 second. Blink and you'll miss it.....
And the vast majority of running issues will not turn on the CE light. Obviously anything fuel-related. Even those things that might set a code will not necessarily set the light.
And the vast majority of running issues will not turn on the CE light. Obviously anything fuel-related. Even those things that might set a code will not necessarily set the light.
Laughing Gas
Joined: Dec 2012
Posts: 1,035
Likes: 18
From: Alberta
I'd recommend getting one of those ELM 327 Bluetooth OBD adapters off eBay and downloading TORQUE Pro for your Android. Very helpful for reading trouble codes as well as some live data. Inexpensive too. $25 for adapter and $5 for the app.
Sent from Nexus 4. IB AutoGroup
Sent from Nexus 4. IB AutoGroup
Cargo Master
Joined: Nov 2010
Posts: 3,244
Likes: 40
So when the key to first turned to run, the DTC light will flash as a self check?
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wrdabney
1999 - 2003 7.3L Power Stroke Diesel
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Aug 26, 2012 04:03 PM
