Hi guys, i hav an 1989 300TE with a rumbling idle. I pulled my OVP tonight and it appears to be a newer model with red top and 2 fuses. Fuses are fine but i noticed a rattle when i shook it which alarmed me a tad. I have searched high and low and it would seem to indicate a faulty OVP but i have also read that this symptom isn't necessarilly a fault and a bit of a myth. Admittedly i thought a rattle = bad. I can't imagine the relays in this are that sloppy that they would open and close when you shake it lightly. Can anyone shed some light on this?