93 240SX shaking while idle

[kayaker]

hi, folks:

my 93 240sx has been runing great for the last 4 years. starting this week, afteri switch to biking to work for 3 days, it developed this shaking problem while idiling. when i pr ess on gas, the shaking is gone, when i run at greater than 30mph,no problem at all.

what might be the fix ? spark plug ?

thanks/gracias.

kayaker

[book-ends]

That sounds like a good possibility. If you have a mis-firing plug, it will upset the balance of the engine and it will vibrate.........but I'm not too sure why it would disappear at higher RPM's.

It might also be shaking because the AIV assembly is starting to fail. Good luck!

[Altiman94]

check the injectors