Mercury Mystique Questions

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I was replacing my radio in my 98 mercury Mystique it worked now it doesn't an now the key fobs won't work too, to add the car won't go into program mode. I still can turn car over and still drive.
How long have you had this problem? A day or so
The problem has been pretty constant since I got the car two weeks ago . it starts after I drive it an hour or so . it doesn't always do it . sometimes I can fix the problem by shutting it off and starting rite back up . and when problem occurs if I try to accelerate it trys to die out .
I put jumper cables on my car and my moms car I let run for literally an hour drive it around for a few then turn it off turn back on immediately just to make sure it still has juice. The next morning I wake up and it's not all the way dead but it just won't start.
Need to be replaced having problems with fan not turning off po118 issues smell of gas fumes. Ect.
I have had some problems with the ignition switch not wanting to turn
I never use speed control so I dont think thats it. Could it be what controlls gas flow or idle air by pass valve in 1999 car. When first cranked drove sluggish.
I bought a whole new control panel and still have the issue.i check the 30amp fuse and Its good.all i can rhino of it being now is a resistor or a relay
The wiring harness is dry rotted
It seems as if something is blowing the regulator in the alternator. Any suggestions I've tried every thing I can think of. Please help
I have never heard of this before , she ended up hitting a guardrail when the wheel locked up . The damage can be fixed but not sure if I should fix the car if I can't figure out why the steering wheel locks up . It happened 3 times already the last time she hit the rail
If you just attach sensors will a car still run
I replaced the vss beacause my car was skipping and jumping around the car only has around 43000 miles on it so the trany wasn't the problem so my next guess was the vss I replaced it and now my speedometer will not work
speedometer and cruise don't work
I had the spark plugs, spark plug wires, valve gasket replaced. Still having a problem. There was oil all over spark plug boots because of valve gasket leak, put new spark plugs in before leak was fixed but my mechanic fixed the gasket and wires and didn't replace spark plugs because they were new. Still having a problem. I can start up a hill fine but at a certain point it just bogs down and won't accelerated, i have to take my foot on and off the gas to get the car going again. Same thing when I am driving at 65 mph. It will be fine then suddenly drop speed. Should I just replace the spark plugs again? I don't think that is the issue. Also the check engine light comes on when it happens and then turns off. Otherwise the car runs very well it only has 160k miles on it. I have had it for 6 years. Also I had this problem a while back then it stopped after cleaning a small piece of foam in the air filter system. I don't think that's what stopped it because I did that again and it didn't change this time. It actually started again when I had the struts replaced and got a regular oil change. I let a broken strut spring go for a long time so the rear end of the car was sitting low for a long time and now it sits up right. Don't know if that makes a difference but thought I would give all details.
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