Something loose? Exhaust pipe rattling/hitting on something? You'll have search it out.
Idle could possibly be too low.
The alternator in a 1994 Mercury Topaz may be going bad due to factors such as age, wear and tear, or issues with the electrical system. It's possible that there could be a problem with the voltage regulator, wiring, or connections that is causing the alternator to fail prematurely. Regular maintenance and proper diagnosis of underlying issues can help prevent repeated alternator failures.
There is a circuit breaker thaich could be bad.
where is the fuel reset swith for a 1989 mercury topaz
On the air condition COMPRESSOR is an electric CLUTCH that may be making contact and noise while the a/c is off and the engine is running...when the a/c is turned on the CLUTCH engages, and the noise goes away.....good luck:)
Clean them and see.
The rattle could be caused by loose bolts or worn suspension parts. The rear suspension should be checked to insure that no parts are close to breaking.
A possible slogan for topaz could be "Sparkle with Topaz - Natural Beauty, Eternal Elegance."
The wheel bearings on a Mercury Topaz help support the weight of the vehicle and allow the wheels to rotate smoothly. If you notice a humming or grinding noise coming from the wheels, it could indicate a failing wheel bearing that needs to be replaced. It is recommended to have a professional mechanic inspect and replace the wheel bearings if necessary to ensure safe driving conditions.
There could be hundreds of different things that could rattle. Give us more details. A common rattle is from the catalytic converter. The inside breaks and pieces get into the exhaust and rattle.
What kind of 'rattle' are you trying to describe? Is it simply 'annoying?' Does the wheel itself feel 'loose?' It could be something as simple as a loose wire that runs inside the column up to loose steering linkage. If you have any doubts as to the seriousness, get it to a shop ASAP!
There are many things that it could be, but you should try checking your fuel pressure regulator. Did you replace the fuel filter first?