I have a 89 t2 and I changed the radiator, coolant hose to the throttle body, the intercooler hose by the drivers side, and cleaned the back valve. Now when I went to bleed the air out of the system it went and held idle at 1500 then to almost 2k. I pulled the back valve plug and nothing and checked the vac lines they are good. But I did check just the obvious ones can't really check till its light out. Is it because I cleaned the bac valve or vac leak?

 

Just re-adjust your TPS. I've had to do it a couple of times when messing with engine stuff not related to the TPS.

 

Wow I feel stupid the throttle cable was to tight...lol

 

glad you got it fixed