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Originally Posted by silvia1320
alright guys. i just bought a 91 se-r and the idle is a little jumpy but it mostly just makes the car vibrate alot. the rpms only go between like 800-850 but the car rattles like crazy when it is idling. could it be worn motor mounts or the fact that it is a jdm motor and it doesnt have the egr system or the aac valve like the usdm motors?
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Check the passenger side motor mount: the most likely cause is the liquid filled section has ruptured. You can get a new OEM one or get a PROTHANE or ES motor mount insert set. As for the idle, which ECM are you using? Did you swap over all the USDM sensors to the JDM motor?
