Question about 2001 Mercury Grand Marquis

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I have an 01 grand marquis with no spark and no fuel pump. I plugged a code scanner into the plug under the dash turned on the key and the scanner does nothing. All the dash lights and everything else comes on with the key but the scanner does nothing. Does this mean that the computer in the car is probley shot?

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Not exactly. The scanner doesn't get its power from the computer of the car, but from another pin, which is the 16. You may have some blown fuses to the computer, which could be the same fuse for the pin 16 which is the power for the scanner. You can check on the Data Link Connector pin 16 if you have 12v, if you don't start looking for blown fuses.

Posted on May 16, 2010

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My 2004 Mitsubishi Outlander turns over and cranks but will not start. The engine light comes on but I don't know how to check the code or if there's any codes to find out what the problem is


It is not starting most likely due to lack/no fuel or no spark. You will have to determine if there is a fuel supply. Can you hear the fuel pump come on if you remove the gas cap and put your ear close while turning the key to the on position? If you can't hear it operate for a second or two, it may not be working. Pull a spark plug wire off the spark plug and hold it over the engine and crank the motor. If a continuos spark is present the ignition system is ok.

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Can you replace a spark plug on a 1999 Mercury Grand Marquis without pulling the AC


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My engine will turn but not start.my scanner says put key in "on" position but it is. fusses are all good and i replaced fuel pump relay


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1 Answer

My 1998 Mercury Grande Marquis intermittently fails to start. The scanner does not show a code. After about 20 minutes it has started. There are no warning lights coming on. Joe Thigpen, Austin, Texas


Who had the scanner, a repair shop?

Are you talking about a personal code reader?

Have you checked the fuel pressure at the rail?

We need more info
You haven't said what you do have, and what tests
determined what you have e.g. spark,fuel pressure.

Are you referring to the starter turning the engine over
or the engine not running?

Most llikely you have a failed fuel pump in the gas tank

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1.Remove engine shroud.
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1998 Mercury Grand Marquis Fuel Pump Replacement


you can try just resetting the fuel pump switch located in the car

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So you have power there, why not try a little whap with rubber hammer near it while key on to see if it will do anything. I;d try it just to see if it will come back to life.

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no but it probably has a fuel pump or coil dead turn key to on position until dash lights up don't crank it you should hear grrrrrr from back seat that is fuel pump no grunt no pump!!!!if a grunt is present then I would consider checking out that ignition coil!!!cheers

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