Hi Guy, just had converter installed yesterday my car runs better, it didn't have one on it at all,I have a 1988 volvo 740 gl
My question is how do I idle the car,it is running real low on idle,like on that dash below the 1 on the rpm..I guess like 300-400,When Ihold the throttle up a ;ittle the car runs just fine, but how do I adjust this.I see a little screw but it has no head to turn it,on the top or the bottom.Please help..Please show picture if you have.

 

The idle is pretty much set by the computer.The first thing I would do is remove the throttle body and clean good.I would also remove and clean the idle motor good as well.The idle motor is located under the intake.It looks like a shiny cylinder with 2 hoses going to it and a plug.