No Voltage To Check Engine Light

bluebellbus

Member

Mar 7, 2014

9

1

14

Apr 12, 2014

#1

• Apr 12, 2014

• #1

Hi,

So I'm tackling gremlins left by idiot previous owners and one such gremlin is the lack of a check engine light. Now orgininally I thought that it was just a bulb that the previous owner pulled. Upon replacing the bulb I found that the check engine light still didn't work. I then measured the voltage at the wires with the ignition on and there was none! Could anyone tell me what the cause of this would be? All the other lights & gauges appear to be functioning.

Thanks

 

larrym1961

5 Year Member

Dec 18, 2010

570

36

49

Idaho Falls Id

Apr 12, 2014

#2

• Apr 12, 2014

• #2

87-88 Mustangs had an inoperable check engine light if yours is one of those years. My 87 does not have one.

 

bluebellbus

Member

Mar 7, 2014

9

1

14

Apr 12, 2014

#3

• Apr 12, 2014

• #3

Hmm, indeed it is an 88. Interesting that there is a place for it in the gauge cluster. So there's no indication if the computer is throwing codes?

 

bluebellbus

Member

Mar 7, 2014

9

1

14

Apr 12, 2014

#4

• Apr 12, 2014

• #4

Also, is it true that the "Check Oil" light is also inoperable? There was no bulb in that slot as well...

 

larrym1961

5 Year Member

Dec 18, 2010

570

36

49

Idaho Falls Id

Apr 12, 2014

#5

• Apr 12, 2014

• #5

Now the "check oil" should work it has lit up in the past on mine. If you have a low oil sensor on your oil pan that light should work.

The only way I know if there is a code present on mine is to check it periodically with a code reader.

 

bluebellbus

Member

Mar 7, 2014

9

1

14

Apr 12, 2014

#6

• Apr 12, 2014

• #6

OK, well I actually have another "Check Oil" light in the lower warning light set near the ignition switch, not in the gauge cluster. But there's a spot for a lamp and I can clearly read "Check Oil" in the cluster where the missing bulb was. I was just curious about that. Thanks for the info!

 

larrym1961

5 Year Member

Dec 18, 2010

570

36

49

Idaho Falls Id

Apr 12, 2014

#7

• Apr 12, 2014

• #7

The warning lights on the lower instrument cluster near the ignition switch was specific to the Mustang GT.

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,215

17,898

224

Massachusetts

Apr 14, 2014

#8

• Apr 14, 2014

• #8

bluebellbus said:

Also, is it true that the "Check Oil" light is also inoperable? There was no bulb in that slot as well...

Click to expand...

The one in the cluster is inoperable. The 87-89 GT uses a 4-light pod on the passenger side of the cluster for the low oil light