Motor mount issue 2000 RX 300
#1
Driver School Candidate
Thread Starter
Motor mount issue 2000 RX 300
I need to replace all my motor mounts. I believe there are three, two on top of the engine and one lower. Someone correct me if this is not correct. Getting the upper ones replaced was fine but no one locally can find the lower mount with the vacuum port. Any suggestions?
#7
Moderator
Mount near the front (radiator) is the active mount (it produces counter kick to even out the shakes). I think that is why Lexus uses 3 point mounting system ... with 4 they would be fighting against another tether point.
There is a 4 connection point (no weight transfer is involved) this ensures all the torque is transferred to the wheel and the engine does not twist. Top of the engine near the passenger. This mount is usually the first one to go.
Salim
There is a 4 connection point (no weight transfer is involved) this ensures all the torque is transferred to the wheel and the engine does not twist. Top of the engine near the passenger. This mount is usually the first one to go.
Salim
Trending Topics
#10
Moderator
#11
Have you changed any of your mounts? I changed the dogbone torque mount recently, and also plan to do the transmission mount as it is flattened.
#12
I just added "Active Mount" to my vocabulary. Thank you salimshah and Lexmus for the helpful replies.
Now knowing what to look for, I found a useful (imho) link on this: http://www.brakeandfrontend.com/tech...-trans-mounts/
Note the part about vibration at idle when these fail. Never experienced this myself, but seems that this vibration could be wrongly diagnosed as some other engine problem. Good to know for future.
Regards . . .
Now knowing what to look for, I found a useful (imho) link on this: http://www.brakeandfrontend.com/tech...-trans-mounts/
Note the part about vibration at idle when these fail. Never experienced this myself, but seems that this vibration could be wrongly diagnosed as some other engine problem. Good to know for future.
Regards . . .
#13
Hi salimshah,
For other members and posterity (as you suggested above) here's a pic of the 2000 RX300 USA vacuum lines from the sticker/label on top of the radiator frame:
Thanks again for your help.
Regards . . .
For other members and posterity (as you suggested above) here's a pic of the 2000 RX300 USA vacuum lines from the sticker/label on top of the radiator frame:
Thanks again for your help.
Regards . . .
#14
Mount near the front (radiator) is the active mount (it produces counter kick to even out the shakes). I think that is why Lexus uses 3 point mounting system ... with 4 they would be fighting against another tether point.
There is a 4 connection point (no weight transfer is involved) this ensures all the torque is transferred to the wheel and the engine does not twist. Top of the engine near the passenger. This mount is usually the first one to go.
Salim
There is a 4 connection point (no weight transfer is involved) this ensures all the torque is transferred to the wheel and the engine does not twist. Top of the engine near the passenger. This mount is usually the first one to go.
Salim
#15
Moderator
There are 3 mounts ... all below the engine. One below oil filter is "active" mount which counteracts the engine vibration and the other 2 are passive. There is a dog-bone support at the top of the engine which is a brace to counter act the torque developed by engine under power.
Mechanics along with visual also use long pry bars to forcibly shift the engine/transmission to see if the mounts are compromised.
I have never priced the mounts. The active mount maybe fairly expensive.
Salim