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jcj

jcj 4/30/2010

1995 Mercury Grand Marquis LS 8 Cyl 4.60L

Engine

Black soot in tailpipe

2 Answers


AUTOTECNICA

AUTOTECNICA 4/30/2010

Your problem is that your cars FUEL MIXTURE is TOO RICH....
It could be caused by:an electrical or a mechanical missfunction (mainly sensors)
You didnĀ“t say if Ur CHECK ENGINE light is on....IS IT ?
CHECK:* SPARK PLUGS old,or worn out,incorrect gap,-*SPARK PLUG CABLES,old and cracked.-COIL,(unlikely)
Check:*THROTTLE BODY dirty or clogged.
CHECK: *TPS sensor,-MAP sensor,-OXYGEN sensors (4).
check Ur oxygen sensors ,your car has 4 of them,they are expensive (the check engine ligth would have to be on permanently on your dash).
HOW ABOUT MORE INFO....?

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AUTOTECNICA

AUTOTECNICA 4/30/2010

HI...CHECK YOUR MAP SENSOR.....

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