Sort of a Rough Idle When Cold (92 SVX)

[elemgee]

This is my 3rd SVX and like the previous two, its a wonderful car but..... When i 1st start the car, the idle seems a little bit rough when the car is in park. Seems to get better (but still not perfect) once I put the car in gear. Its not what you'd really call rough, but its not as smooth as the other two that I had. And I dont know if this is related to the slightly rough idle or not, but the gas mileage is not as good as the previous ones. I'm getting around 22mpg with this one - I was getting around 25mpg with the other two (most of my driving is highway). No check engine light lights up, and if I hadn't owned two of these before, I dont know that I'd think the idle is rough.

It only has 38K miles (I'm the 2nd owner and purchased it a few months ago).

Any ideas? Thanks.

Larry