Easy way to dis-able check engine light??

[andymac0035]

This is for my 1991 CV.
It's the "check engine" light.
I have a separate oil light (aka replace engine light).

Mine likes to go on/off under light throttle when the outside temps drop.
All summer it's been great. Once the temps drop..blink...blink...blink.
If I let off it.....or give it past half throttle it goes away. (till I go back to normal throttle again)
Once the car gets fully warmed up it does this a lot less.

No codes.

Car runs great! Fuel mileage is normal (actually it's improved)(20-22 in summer).

I have a temp guage and it reads usually around the "O" on NORMAL.
T-stat was new last year. Car has done this since I got it.
I thought about replaceing the temp sensor....but the guage is working......

This is very annoying and personally I think the light itself is wonky.......

I just want it gone.

[hemihotrod402]

Take the bulb out

[87gtVIC]

Take the bulb out

Beat me to it.

[andymac0035]

Thank you.
(that's what I was going to do)
For some reason I thought there was a circuit that was completed by this and that pulling the bulb messed something up.
I dunno'......but I thought I read that somewhere.......

EDIT
Also hey guys!
It's been a while.

[1990LTD]

the charging system and airbag get messed up like that

[Lincolnmania]

we put shrink tubing over the airbag light in my mark 7

[andymac0035]

the charging system and airbag get messed up like that

You mean if pulling those bulbs......?

Or pulling the check engine bulb messes with other stuff?

I'd rather ask a stupid question.......that make a stupid mistake.


Also, LOL on the shrink tubing.......I may try that.
Sucks I have to dig into the dash though........

[87gtVIC]

You mean if pulling those bulbs......?

Or pulling the check engine bulb messes with other stuff?

I'd rather ask a stupid question.......that make a stupid mistake.


Also, LOL on the shrink tubing.......I may try that.
Sucks I have to dig into the dash though........

I wasnt sure at first either but I am pretty confident that he means pulling those bulbs.

[91waggin]

Pulling charging system and airbag lights messes things up. None of the other ones tho.

[gadget73]

Or you could try to fix the problem. My Mark VII did this and by pure accident I found out the egr valve did not hold vacuum. Swapped it with a good used spare and the light has not come on since.

[andymac0035]

So my EGR vavle could be messed up and yet my car runs fine?
Hmmmm......I do have two spares laying around, no idea if they are good or not though.
One is HO one is LOPO, does it matter?

And yeah...I know......I know........I should find the problem and fix it.
It's just I didn't have a clue what was tripping the light and the car (knock wood) is running fine.

EDIT:
But why would it not do it during the heat of summer?

[gadget73]

maybe. Not that many things trip the CEL, but the egr valve does happen to be one of them. The valves themselves should all be the same. Just make sure it holds vacuum and moves before you bolt it on.

as for why it does it when it does it, NFC. Maybe its a slight vacuum leak that seals itself up when things are hot. The car can run fine without the egr valve working so its possible its screwed up and its not creating any running problems. I had no issues with the Mark other than the random blinky light. I have no idea if it set codes becuse I've never checked it. I was just playing around with the vacuum pump one day and noticed that the egr valve didn't hold like it should have. When I swapped it, the light stopped coming on so I guess that was the trouble.

[1990LTD]

I wasnt sure at first either but I am pretty confident that he means pulling those bulbs.

yeah that's exactly what I meant, sorry I reread that and it was vague.

[grandpaslincoln]

Or you could try to fix the problem.

This. Covering up the problem instead of finding the source is a good way to cause more problems.

[sly]

my 93 vic ran like a champ with the EGR system totally clogged. The computer kept throwing codes and bitching about it though. So yes, the car can run fine with the EGR system not working. Gas mileage may suffer a bit.