Check engine prove?

Bolt on 5.0

Founding Member

Jun 26, 2002

302

0

17

Suffolk, NY

Jul 25, 2006

#1

• Jul 25, 2006

• #1

Sorry for all the posts guys, I have off this week and have been working on the mustang alot. Does the check engine light prove out(illuminate) when the key is turned on initially. My car runs great but the light doesn not turn on but it did yesterday when starting the car, tried it today and nothing. I checked this while playing with my alarm

 

srothfuss

Last night I stabbed the same guy 7 times in a row

Oct 17, 2004

1,796

3

0

Woodward Ave.

Jul 25, 2006

#2

• Jul 25, 2006

• #2

I don't think the CEL comes on when I start mine either. I haven't looked (or been in my car) in a while though so I am starting to forget things.

 

vristang

15 Year Member

Mar 31, 2005

4,933

101

124

Seattle

Jul 25, 2006

#3

• Jul 25, 2006

• #3

subscribing
cuz I am in the same boat as srothfuss... I can't remember if it comes on or not

 

Bolt on 5.0

Founding Member

Jun 26, 2002

302

0

17

Suffolk, NY

Jul 25, 2006

#4

• Jul 25, 2006

• #4

OK guys pulled the alarm out and cel comes on key on engine off. Didnt do that when alarm was in but its out now

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

33

129

Jul 25, 2006

#5

• Jul 25, 2006

• #5

That's how it should be AFAIK. The CEL is one of the most important lights to have prove-out (as a self diagnostic of it's ability to illuminate). I dont have one though (SD) so I wasn't sure.

The bulbs burn out after 20 years.