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Mercury bogging down upon acceleration
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Towanda
New User
May 23, 2013, 10:24 AM
Post #1 of 10
(2567 views)
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Mercury bogging down upon acceleration
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1999 Mercury Mystique
Engine size ? Um, it's a four cylinder, that much I know. Sorry *blushing*
Current mileage 82,000+
Hello and thanks to any and all who read this.
Last Oct. I bought the above stated car from a veterans charity, so of course I got no info from previous owner who donated it. Since acquiring it I have had much drama and numerous tow-ins. I do get of course that you can expect much of this when purchasing a 14+ year old car.
Current problem: Occasionally it 'bogs down' when I mash the gas petal. This happened really bad on a fast moving freeway yesterday evening and I had to turn on emergency flashers and wave people around me.  Then it just sort-of passed and began driving normally. I always use regular unleaded if that matters. And I do not have any dash lights glowing.
Here is a list of what has already been addressed, repaired, and/or replaced since beginning of my ownership, just in case this will rule out any issues about my question:
Alternator and of course battery replaced.
Spark plugs, spark plug wires, air filter and fuel filter all replaced (all this was done a couple months ago when car was misfiring so badly I almost didn't make to the garage and check engine light was on).
Water pump and thermostat last month, since car overheated.
Came out one day and all my power steering fluid was on the ground. Mechanic said he replaced a power steering hose (? I think?). Anyway, whatever he specifically did, it stopped making that racket when the steering wheel was turned hard and I've seen no more fluids underneath it.
Some positives: It starts fine and seems to idle fine, best I can tell. The issue is only happening when accelerating.
Fuel pump going out maybe? 
I'm a woman with no mechanical experience. (NO offense to any lady mechanics on here who know your stuff!)
As you may have guessed from the laundry list posted above I am out of money right now and so discouraged, I'm almost at the point of junking it on the side of the road. Any and all suggestions or input appreciated and thanks again for reading.
So any guesstimations here would be welcomed.
(This post was edited by Towanda on May 23, 2013, 10:26 AM)
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HT
User
May 23, 2013, 11:51 AM
Post #2 of 10
(2540 views)
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Re: Mercury bogging down upon acceleration
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This is going to require some testing and equipment to expose what is going on and as you admit, it's not your thing.
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Discretesignals
Ultimate Carjunky
/ Moderator
May 23, 2013, 4:06 PM
Post #3 of 10
(2501 views)
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Re: Mercury bogging down upon acceleration
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It's odd, but in our shop we call those cars Mercury Mistakes.
Is the check engine light on? A fuel pump that isn't putting out enough volume or pressure could cause that type of symptom. A gauge would need to be connected to see what the fuel pressure is doing when the problem shows up if you suspect a fuel pressure problem.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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way2old
Veteran
/ Moderator
May 23, 2013, 5:00 PM
Post #4 of 10
(2491 views)
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Re: Mercury bogging down upon acceleration
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Maybe it will be as simple as a partially clogged fuel filter.
Being way2old is why I need help from younger minds
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Hammer Time
Ultimate Carjunky
/ Moderator
May 23, 2013, 5:17 PM
Post #5 of 10
(2488 views)
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Re: Mercury bogging down upon acceleration
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Or an intermittent MAF
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Discretesignals
Ultimate Carjunky
/ Moderator
May 24, 2013, 5:49 AM
Post #6 of 10
(2465 views)
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Re: Mercury bogging down upon acceleration
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or a potato in the tail pipe. 
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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Discretesignals
Ultimate Carjunky
/ Moderator
May 24, 2013, 8:29 AM
Post #8 of 10
(2449 views)
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Re: Mercury bogging down upon acceleration
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I guess you didn't pick up on my sarcasm there...
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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Hammer Time
Ultimate Carjunky
/ Moderator
May 24, 2013, 8:30 AM
Post #9 of 10
(2443 views)
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Re: Mercury bogging down upon acceleration
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I guess you missed mine
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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MarineGrunt
Enthusiast
May 24, 2013, 6:46 PM
Post #10 of 10
(2427 views)
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Re: Mercury bogging down upon acceleration
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You two did miss each other, didn't you? 
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