My Astro Van (1998, 195,000 Km) has had a slight miss (transmission I think) when I drive it in third gear at 40 to 60 KPH. It clears up in the drive gear (4th or overdrive?)
It has been this way for about 4 or 5 years now and hasn't presented a problem 'cause I just make sure I drive in " D" or overdrive. However, it seems to be starting to do it in drive now as well!
I know that at one time transmissions had a 'modulator valve' that used to get dirty. This was one of the vacuum connections between the motor and the tranny I think. I would be very thankful for some input regarding a possible cause and if some cleaning or adjustment might repair the problem.
I have had the tranny oil & filter changed about 30,000Km ago.
Tuesday, October 30th, 2007 AT 11:48 PM