TOO LOW OF OCTANE.TRY 89 IF STILL RATTLES GO TO 91 OR 93 OCTANE. U WILL DAMAGE YOUR ENGINE WITH TOO LOW OCTANE.
an air leak in your intake will cause the engine to rattle. Protege's intake hoses are prone to cracking.
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If this is a general noise, it could be the transaxle. When you are accelerating, the engine is pushing the gears, and when you let go of the pedal, the vehicle starts to shift back down. If this is an engine noise, it could be predetonation or a valve problem.
Check your catalytic converter.
One of the main causes of feeling a vibration in the gas pedal is engine vibration. The vibration from the engine causes the accelerator cable or linkage to vibrate and the vibration can be felt in the gas pedal. Check with a mechanic to be sure.
Probably the through out bearing.
a low whistling noise every time you release the gas pedal usually coincides with a dieing catalytic converter Rattle, check engine light, stalling problems, low power, strange exhaust odor,
wheelbearing or cv axle enjoy
Sounds like the power brake booster is bad. Get it checked out.
It's the turbo charger. A: if you feel a small vibration in your gas pedal plus the noise you said, it should be the wheel bearing, has to be changed (cost 50)
I had a similar problem on a dodge pickup, after having soom work done at the dealer there was a rattle that was driving me crazy....after many trips back to the dealer a young mechanic found the problem.....there was a small metal tag at the back of the engine that probably became loose while work was being done on the vehicle the rattle was only heard when I let off the gas....after the tag was removed I once again drove in peace.
What causes a car to screech is when you get too excited to go fast you step on the gas pedal or in other words you floor it! This causes the tires to regain grip on the ground and makes the screech noise.