Question about 2000 Mercury Grand Marquis

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Have to hold the gas peadel to the floor to crank when idle put in gear it cuts off changed spark plugs

Changed the oil and spark plugs got in driveng down the road car cut off i put gas hAD TO PRESS THE GAS PEADEL TO THE FLOOR TO GET IT CRUNK I LET IDLE THEN PUT THE CAR IN DRIVE IT CUTS OFF

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  • Mercury Master
  • 5,522 Answers

This could be a bad connection at the crankshaft sensor. Check your TPS switch too.

Posted on May 07, 2015

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Posted on Jan 02, 2017

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When i got my used 1989 Buick Lesabar I was told the cadillic converter was clogged which was causing the car to knock and staul out you could only drive it for a short distance when it would cut off and...


Bro,
This is a model which should get a good attention on all of its parts. You should have a detailed idea on your car's parts, its condition, workability,etc.
So firstly try to figure out any kind of leakages from crank parts, gear/clutch assembly. This is easy to find when the car is parked for long time.
Then look out for any broken pipes, tubes, seals, cracks.
Any oil leakage into combustion chamber, plugs, etc.
Check plugs by touching the car body while cranking!!
Then check the distributor cables and the distributor.
I think this all about your Power lines, fuel pumps.
So please try and rate it!!!

Mar 12, 2014 | 1989 Buick LeSabre

1 Answer

1998 Licoln Continental 4.6 liter VTech


The fact that you have indicated the knock is in a very specific area of the engine indicates to me that the knock is there while idling and with you listening with the hood open. Spark knock, the kind that is caused by using lower-than-recommended octane gasoline, usually only happens when the engine is under load, not at idle.
I think you have a mechanical problem - valves, lash adjusters, maybe the cam itself. Do a compression check. If you have valves not working properly or not closing properly, this should help you find the area to check for damage.

Mar 04, 2017 | 1998 Lincoln Continental

1 Answer

My 99 buick regal cranks over and starts but has trouble running. If you give it gas to help it through the start up it levels out and runs fine. Fuel pump is good, I've changed spark plugs and wires,


sounds like a stuck open EGR valve to me , take it off of a cool engine and spray some carb cleaner around the seat see if any leaks through to the other side. If it does The valve is bad. Also check out your throttle body for carbon and gumming. W/ engine off spray an appropriate carburator
cleaner into the opening and clean throttle plate and bore with a rag until shiney. put all the air cleaner hoses back together and hold throttle to floor momentarily until engine starts, then rev up half way and release throttle twice quickly, now allow engine to idle idle should be stable and smooth. If not then check for other sources of vaccume leaks.

Apr 18, 2013 | Cars & Trucks

1 Answer

Car runs fine in park and cuts off in drive


Don't know cars - but it might not be idling fast enough to make the gear change. Idle reset needed maybe?

Feb 14, 2013 | Cars & Trucks

1 Answer

Only cranks and stay if I give a little gas. I have changed the converter, spark plugs & wires, and put fresh gas & treatment in the gas tank. If I hold idle over 1 RPM it runs smooth, but if i let...


Test the TPS Sensor & replace the front
O2 Sensors if they have 100,000 miles on them

Clean the MAF Sensor with CRC MAF Cleaner,
Spray the throttle plate with the CRC throttle body
cleaner

Check for vacuum leaks

You may have to have a shop smoke test the
intake & other items

Jun 09, 2011 | Ford Escort Cars & Trucks

1 Answer

1989 buick is not running right


Did you check the IAC Valve, (Idle Air Control), TPS (Throttle Position Sensor) or change the fuel filter. Any Service Engine Soon light.

May 26, 2010 | 1989 Buick LeSabre

1 Answer

Crank no start ,got fuel got spark, when trying to start spark plugs get wet ,changed plug pinched fuel line shut try srarting flud wont start???


You pinched the fuel line????
If you crank for too long to start the car, the engine will "flood", this is why the plug was wet. It had too much gas and wouldn't start.
Pull out ALL plugs and dry them off.
Install them.
HOLD your gas pedal to the floor and crank.
This will stop gas from entering the engine.
you need to get that extra gas out beofre it will start.
If you have so much gas in there you can do damage to your engine!!
Now after a few crnaking attempts with your foot to the floor, take your foot of the gas pedal and try to start it again.
But remember if it doesn't start in 3 tries, you need to do the pedal to the floor once or twice to remove the excess gas.
When you crank the car to start it sprays gas into the engine, even if it won't start. So it very easy to "flood" the engine, and then you'll have a hard time to get it going!

Jan 08, 2010 | 1997 Nissan Sentra

2 Answers

Did an oil change, filled gas tank, put in GUMOUT, 1999 Jeep GC


If you put a fuel cleaner additive in the tank I would change the fuel filter. I believe on this model it is located in the frame just ahead of the fuel tank on the drivers side. Any foreign material cut loose from inside the tank from the cleaner often clogs the filter.

Jul 15, 2009 | Jeep Grand Cherokee Cars & Trucks

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