1991 Maxima V6-3000 / shaking engine problem.

[Gbelovskiy]

Dear, all! Do not know what to do in the situation like that ...Came to the mechanic 4 diagnostic - the computer shows nothing -zip! To describe the problem have to say that idle RPM about 750, however you feel (even on the idle) that because of the engine vibration the entire car shakes..The turn up has been done... Check the sparks by pulling each of the wires from the top of the spark plugs -- shoots in all 6 plugs! Gas always super!Previously car worked smooth - could not even hear the engine running... Do not know where to look for the problem? Sensor? Vaccum? Fuel pump? Air?Could you please share the helpful information how to find the annoying problem? Kind regards. Greg.

[audtatious]

With a 15yo car, it could simply be the motor mounts.

[NISTECH]

Could be a sticking EGR pentle, or it could be the injector spray patterns. Or simply the mounts as Matt stated.