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Why does the check engine light come on in a '93 Lincoln Town Car?

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Answered 2015-07-17 17:39:41

Hey Michael==Go to auto zone and they will read the codes for free and it will tell what direction you should go to repair your car. GoodluckJoe

Autozone can only scan 1996 and newer lincolns!

They CAN check the pre 96 ones but it requires them to actually look for the right connector and they are usually too lazy to do it so they just say they can't unless it's 96+. 96 got a standardized scanner across all make/model lines in US so just one code reader. When they are slow, they have checked the codes on my 94 Towncar several times. Half the time, I was told they couldn't do pre 96's and the other half they did it. They will also tell you that unless the check engine light is on, codes can't be read. That is also untrue. Codes are stored in memory for IIRC 500 ignition cycles or when the battery is disconnected, the codes are cleared.

One thing I have learned about Towncars is that damn EGR valve causes carbon buildup. Remove the throttle body. Right under that is a gasket. Go to your nearest napa store and get the gasket, it's like 3 bucks I think. Anyway, after you remove that you will see a small half canal that hides under the gasket. Most likely and it happens on all towncars especially if you use low grade garbage gas it will be clogged with carbon, get a can of gum out carbareutor cleaner and just clean it.try to clean it all nice and squeaky, Put the throttle gasket in(new one) and put back the throttle, reset the computer and let her fly, you see that check engine light go away.


that is so true!! went today to get a reading and told me only 96 on. it is lie, because last week the guy did the diagnostic for me. unfortunately he wasnt there today.

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