Gary - thanks for the follow up. My 90 2.8 has a cyclic idle when cold for about 15 seconds 500 - 1000 rpm. Then holds some what steady ~700 - 800 rpm, but slightly rough. When warm, idle is at ~1000 and has a slight "bump" or miss.

I have the same manual you have and I am glad you gave a heads up. I have not had a chance to trouble shoot this issue due to other issues. Helm manual will be ordered today. - JL

I ain't real bright...

1990 Trooper LS, V6, Auto, 4door
132,000 miles 11/26/09