My check engine light doesn't work?
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Elder User
Joined: Sep 2005
Posts: 841
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From: Orangeville, Ontario
My check engine light doesn't work?
This doesn't seem to make any sense. When I had my truck at ford they told me my IAC was bad, which makes sense because it flucuates like crazy sometimes. As well as my o2 because the end is broken off and the connection is dangling. Both these would set off the check engine, no? For a while there I figured it was just burnt out but I got around to changing it today and it didn't make any difference. I'm trying to do the flashing check engine light thing for checking the codes which is why I'm trying to figure this out.
Any ideas as to why it wouldn't be on? Thanks in advance guys, hopefully someone can shed some light on this issue.
Any ideas as to why it wouldn't be on? Thanks in advance guys, hopefully someone can shed some light on this issue.
Senior User
Joined: Sep 2007
Posts: 168
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From: VA
Might want to check the wiring itself I know a lot of people cut the wires to the light because they where constantly on for nothing just a thought if you go to the site listed below it will tell you how to check the codes with the light not working
http://www.fordfuelinjection.com/?p=13
http://www.fordfuelinjection.com/?p=13
Senior User
Joined: Feb 2006
Posts: 111
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its prolly the speedo cable holdin ya up.the way i do it is disconnect the plug close to the radio then you can reach in behind and get to the speedo cable. its tricky to get off too, i use a screwdriver and just fool with it awhile and you'll get it.hope that helps
Fleet Owner
Joined: Aug 2005
Posts: 23,667
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From: Easton,Ks
Originally Posted by misfit351
mine is the same way. i made a tester when i did mine out of an 1157 bulb and socket. never got around to trackin down the problem but i would like to know, i figured it was in the circuitboard.
Fleet Owner
Joined: Aug 2005
Posts: 23,667
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From: Easton,Ks
Originally Posted by TheRoadVirus
Any ideas as to why it wouldn't be on? Thanks in advance guys, hopefully someone can shed some light on this issue.
Do your fuel pumps run with the engine off and the key on for more than one second?
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Elder User
Joined: Sep 2005
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From: Orangeville, Ontario
I've never really heard my fuel pumps. Unless it's that noise when it first goes to run (before start) and it's almost like a click and then yea.. that's gotta be it. Heh. But that only lasts a second max.
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Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
Originally Posted by TheRoadVirus
You should've read my first post. :P
The Computer grounds this wire (pin #4) to turn on the lamp.
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Last edited by subford; Sep 23, 2007 at 08:22 AM.
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