Excessive engine noise through firewall!
04-20-2010, 01:55 AM
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Excessive engine noise through firewall!
Just got a 2000 S430 with about 140k miles but in decent condition for the year. I have serviced the car in every way possible. The noise I am getting through the firewall though is more like a Ford issue rather than a Benz. Should I change the engine mounts? Anyone have any experience/solution for this?
Thanks
Thanks
04-20-2010, 10:00 PM
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Between groaning and grinding, could it be a tranny mount? It almost feels like the tranny is low fluid but that indication should be coming up on my cluster display no? (As they say lol). The vehicle has 140k and I highly doubt the transmission fluid has ever been replaced. Should I change the transmission fluid? Change the cap to a dipstick? Tranny mount as well? I highly doubt any "professional mechanic" knows the exact fix.
Any insight would be appreciated, thanks.
04-21-2010, 09:29 AM
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Engine and tranny mounts are always a good place to start, especially with that mileage.
A tranny fluid change would also be beneficial. You will need a dipstick tool, but there is no need to change to a dipstick, because without any leaks, the level should obviously not change.
Tranny mount and fluid is easy to do. Motor mounts less so.
Put the car in drive, with the e-brake on and someone with their foot FIRMLY on the brake pedal. Then stand to the side of the engine bay, and have them give it gas. If the engine moves up or down by more than about 1" to 1.5", your motor mounts have most likely had it. You can also look to see if they are leaking fluid.
Finally, you may want to consider removing the serpentine belt, and taking a very short drive to see if that eliminates the noise. this will isolate things like the tensioner, idler pulley, ac compressor etc. Keep in mind though that you will have no power steering, no alternator, and no water pump, so keep it very short.
A tranny fluid change would also be beneficial. You will need a dipstick tool, but there is no need to change to a dipstick, because without any leaks, the level should obviously not change.
Tranny mount and fluid is easy to do. Motor mounts less so.
Put the car in drive, with the e-brake on and someone with their foot FIRMLY on the brake pedal. Then stand to the side of the engine bay, and have them give it gas. If the engine moves up or down by more than about 1" to 1.5", your motor mounts have most likely had it. You can also look to see if they are leaking fluid.
Finally, you may want to consider removing the serpentine belt, and taking a very short drive to see if that eliminates the noise. this will isolate things like the tensioner, idler pulley, ac compressor etc. Keep in mind though that you will have no power steering, no alternator, and no water pump, so keep it very short.
04-21-2010, 11:55 PM
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Engine and tranny mounts are always a good place to start, especially with that mileage.
A tranny fluid change would also be beneficial. You will need a dipstick tool, but there is no need to change to a dipstick, because without any leaks, the level should obviously not change.
Tranny mount and fluid is easy to do. Motor mounts less so.
Put the car in drive, with the e-brake on and someone with their foot FIRMLY on the brake pedal. Then stand to the side of the engine bay, and have them give it gas. If the engine moves up or down by more than about 1" to 1.5", your motor mounts have most likely had it. You can also look to see if they are leaking fluid.
Finally, you may want to consider removing the serpentine belt, and taking a very short drive to see if that eliminates the noise. this will isolate things like the tensioner, idler pulley, ac compressor etc. Keep in mind though that you will have no power steering, no alternator, and no water pump, so keep it very short.
A tranny fluid change would also be beneficial. You will need a dipstick tool, but there is no need to change to a dipstick, because without any leaks, the level should obviously not change.
Tranny mount and fluid is easy to do. Motor mounts less so.
Put the car in drive, with the e-brake on and someone with their foot FIRMLY on the brake pedal. Then stand to the side of the engine bay, and have them give it gas. If the engine moves up or down by more than about 1" to 1.5", your motor mounts have most likely had it. You can also look to see if they are leaking fluid.
Finally, you may want to consider removing the serpentine belt, and taking a very short drive to see if that eliminates the noise. this will isolate things like the tensioner, idler pulley, ac compressor etc. Keep in mind though that you will have no power steering, no alternator, and no water pump, so keep it very short.
