Question about 1994 Mercury Grand Marquis
I have good lights with freshly replaced terminals and cleaned posts on a six month battery with 658 cold crank amps rating. When I add a jump start I have no sound or movement at all from the starter.
Let's see if it is the solenoid, the starter, or the wiring. Let's start wit the wiring. Hook a small jumper wire to the big, fat terminal where the battery cable attaches to the starter solenoid. Touch it quickly to a ground and see if there is a spark. Better yet, find an old light bulb like a headlight that works, and use that for your tester. You should have juice to that big teminal on the starter. If it does, next go to the small wire on the starter solenoid that comes from the ignition switch. That wire should have juice only when you turn the key to start, no other time.
Supposing both of those do right, that indicates the problem is in the solenoid or starter.
You must remove the starter and dis-assemble it to see what is wrong, unless you choose to replace it with a new or used one.
The two most common causes of your type problem are burnt contacts inside the solenoid,or used-up carbon brushes inside the starter. Sometimes the armature is toasted inside also.
If the solenoid is only medium burnt, I have used sandpaper to clean contacts sometimes. Starter worn parts must be replaced. A shop should be able to test them for you.
Posted on Jan 06, 2013
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Posted on Jan 02, 2017
they don't have diagram that i've seen, my roommate has this car and on page 172 of owners manual it gives the number of what fuse does what,, .. which corresponds to the number on the lid of your fuse panel
Posted on May 20, 2009
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
Replace the temperature sending unit. Don't confuse it with the coolant sensor, it's the sending unit that's bad.
The sending unit usually has a one wire connection, and the sensor has a two wire connection. I don't have my manual at the moment, so I can't tell you exactly where the unit is.
Posted on Nov 18, 2009
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