Question about 2004 Mercury Grand Marquis
2004 grand marquis check engine light on and flashing overdrive off light
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Posted on Jan 02, 2017
its the tube going from the egr valve to your exhaust it have carbon build up and you either have to replace it or get a metal coat hanger and clean it out.
Posted on Sep 26, 2009
That usually means the transmission is in "LIMP" mode... Just to get you home or to a Service Center of your choice (one that does transmissions).... When it O/D blinks the car will drive sluggish... it stays in second gear and does not shift.... just so you can LIMP somewhere...... a good price to rebuild this transmission is about 1500 dollars.... Good Luck
Posted on Jul 13, 2010
You work on Check Light issues first,so check
for codes & proceed from there.
Need some knowledge or a trouble chart,as codes
don't tell you what is wrong or what to replace
Posted on Jul 12, 2011
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