Having problems with your Mercury Marquis ?

2000 mercury marquis, sluggish getting on interstate and going up hills.

Posted / edited by AnonymousUser on : 15-01-2018

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2000 mercury marquis, sluggish getting on interstate and going up hills.


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I would check fuel pressure, As a rule when under a load, Low fuel pressure rears its head if its low. It allows car to operate normally but when loaded (Going up hill) Fuel pressure should be at or above 35psi minimum ... 1984 Mercury Marquis

I have a 1998 mercury grand marquis and I am getting very little power accelerating. When I try to accelerate quickly I lose all power so I have to slowly accelerate and when I go up hills it will slowly cause me to decrease in speed and if I push on the gas too far it will not have any power going to the engine. Its running codes PO171 and PO174. Egr valve and DPFE sensor were just fixed. Coils and plugs were just replaced as well. What could be wrong?


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It is possible that when you had an oilchange the oil used was 10/40 which is correct for this vehicle BUT i would advocate that a thicker oil is used for this mileage say 20/50.\012all cars will use/burn oil and i always ask my customers how m ... 2004 Mercury Mountaineer

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I have a 1993 Mercury Grand Marquis and sometimes it wont start, but i hear a clicking coming from the EEC power relay box when you turn the ignition on. Before this started happening there was/is a whine coming from the engine and when you pressed on the gas while driving would go away so i had the alternator replaced because sometimes at night when you pressed on the gas the lights would get brighter. All the fuses are good and i did hook it upto one of my buddies diagnostic testers and all it


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Alright this just started happening slowly and has got me stumped. the car starts no problem. but when i start it , it doesn't do a hight idle then slow down anymore , even when cold. after i wait and it warms up , it will move but i gotta give it to her. its wicked sluggish especially on hills. once your going its fine. idle is alright, not great but a steady 800 rpms. once i come to a stop the story starts over , and the hesatation is getting bad for pulling out. plz help!


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Hi,REMOVAL 1. Disconnect battery ground cable. 2. Remove wiper motor linkage. 3. Unsnap and remove windshield wiper motor and linkage cover. 4. Remove retaining clip from windshield wiper ... 2001 Mercury Grand Marquis

My 2001 Mercury Grand Marquis LS has this jerking motion when I hit da gas or going up a slight hill and sometimes shut off. I put new spark plugs in it and changed the gas filter. I wanted to know if it is because of the fuel pump?


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It would appear that the Crankcase breather pipe has become detached. It will be clearly visible, once you get the hood up.\012Regards,David ... 2002 Mercury Grand Marquis

Where is the dome light fade control relay on a 2001 mercury marquis. I get in the car and the dome light comes on but it takes about 10 minutes to go out. forum


It's the lighting control module. Stick your head under the dash on the driver's side, just left of the ashtray. There's a black box held in with three 7mm screws and a clip on the bottom. Take out the 3 nuts, pull down slightly on the clip, and sl ... 2001 Mercury Grand Marquis

I hit something in the road and then smoke started coming out of the car then I lost momentum like I give it gas and it dosn't go . I found lots of transmission fluid on ground .I think the pan has a hole in it.Is it hard to get the pan off and is it something I could try myself. 2002 mercury grand marquis


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When i drive my nissan pathfinder 2001 cuts out or loses power and takes a few pumps on the pedal to get it going. i took it for dignostic it came up with bank 1 too lean bank two to lean 3rd gear ratio off, i tried to go up hill and pressed the gas to get over hill but only got to 30 miles an hour, on the highway i get up to 60 mph and then it cuts out and picks up


Bank 1 too lean and Bank 2 too lean.This is the indication of few possibilities causing this problem.\015\012oxygen sensor, vacuum leak,and wirings.What it means is that the engine is running lean. There are many possible problems ... 2001 Nissan Pathfinder

Cruise control will not maitain the speed it is set on. going up a hill it gets slower and going down a hill it gets faster


My experience is that cruise control works on level roads, uphill you have to control speed yourself same for downhill. Exception is very powerful cars. Did it maintain speeds before? (uphill + downhill) ... 1994 Buick Park Avenue
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