Engine/Air Temp Boost Issue

[onthetrack01]

I got my '90 SE back from the shop last night. Yeah! I took it out and it ran great - full boost, no issues.

Took it out this morning, and same problem as before I took it to the shop - will not boost past .5 bar which boggs down the engine and the car will not accel unless I reduce throttle position quite a bit (basically not ask for too much boost from the car).

Only difference between the last two runs was that last night it was about low 80s in temps, and today was mid-90s.

Thoughts?

[wonderman]

Check the vacuume driven butterfly between the cat and the muffler , if it is closed it will cause this condition. they get seized up and stay closed.

[cnh1990]

Check the cat. One lister cat interior broke down and the pieces clogged the muffler. Runs okay without the muffer.

[onthetrack01]

Thanks for the feedback!

I've played with it some more, and I think it's the typical chargecooler impeller issue. Once the car warms up, which it does rather quickly, the chargecooler is running very hot. It wasn't too hot during the Friday run, even after the run. But on Saturday, after a less than 5 min. run, the chargecooler was very hot to the touch.

I'll post the resolution after the impeller is changed. (See, I'm being optimistic!)

Thanks again!

- Jason