Hey all,
I have a 2002 Jeep Liberty Sport 4X4.
Lately, the weirdest problem has arisen and I can't track it down.
If I drive an extended time, like over a half hour shuttling around town, but it varies, a rattle starts growing from underneath the car. Eventually, it gets louder to where it sounds like the muffler is dragging on the ground. It's sort of more of a grinding noise.
More details:
The car's performance does not change. No indicator lights on, no codes thrown.
It only happens when the car is in motion, generally above 20 mph. No rattle if the car is idling and I press the gas. Does not change with the brakes or going around corners. It's all about the car moving itself and fully dependent on the speed. The faster you go, the louder it gets, until at about 35 where either I'm going too fast to hear it or it maxes/decreases, don't know.
Going over bumps doesn't do anything either, no change in rattle.
Shut the car off, let it cool down, start it up again: rattle gone. Doesn't come back unless you drive for an extended time again.
First thought was catalytic converter, but pushing the gas while in park does not generate any rattle. Obviously it has to do with the engine heating up and heating up some component that lies some distance from engine. But the time period between starting driving and when the rattle is heard varies considerably. Sometimes it never does it.
Any ideas? I had it into a mechanic, he drove it for an hour on the interstate and couldn't replicate it. Checked underneath and said, "Nothing stood out". It's driving me insane.
I have a 2002 Jeep Liberty Sport 4X4.
Lately, the weirdest problem has arisen and I can't track it down.
If I drive an extended time, like over a half hour shuttling around town, but it varies, a rattle starts growing from underneath the car. Eventually, it gets louder to where it sounds like the muffler is dragging on the ground. It's sort of more of a grinding noise.
More details:
The car's performance does not change. No indicator lights on, no codes thrown.
It only happens when the car is in motion, generally above 20 mph. No rattle if the car is idling and I press the gas. Does not change with the brakes or going around corners. It's all about the car moving itself and fully dependent on the speed. The faster you go, the louder it gets, until at about 35 where either I'm going too fast to hear it or it maxes/decreases, don't know.
Going over bumps doesn't do anything either, no change in rattle.
Shut the car off, let it cool down, start it up again: rattle gone. Doesn't come back unless you drive for an extended time again.
First thought was catalytic converter, but pushing the gas while in park does not generate any rattle. Obviously it has to do with the engine heating up and heating up some component that lies some distance from engine. But the time period between starting driving and when the rattle is heard varies considerably. Sometimes it never does it.
Any ideas? I had it into a mechanic, he drove it for an hour on the interstate and couldn't replicate it. Checked underneath and said, "Nothing stood out". It's driving me insane.
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