89 Coupe engine trouble

[Per Lindgren]

Hi people!

I'm asking you this on behalf of my cousin Glenn. He has an 89 Coupe fwd
2.3E (NG code) that has approx. 140.000 kms on the meter.

The engine in his car is low on power, it has a weak bottom end torque
and erratic pull at mid rpms. Just no smooth power. Sometimes it also
stalls at red lights, other times the idle is 2k rpms. On top of it all,
sometimes it loses all power when flooring it, it just bogs down.
Letting off, the power regains so the engine does not die out. So
naturally he loved driving my car, which is virtually the same as his
sans roof.

The shop he bought it from tries to help him out, but they do not have a
clue it seems. They have rebuilt the cylinder head with new valves,
guides and seats. They are going to look over the injection system next.
My clues are either fuel delivery problems or plugged cat. Anyone have a
dejavu here? Please let me know.

Pics of his Coupe and my Cab are coming up here later tonight:
http://albums.photopoint.com/j/AlbumIndex?u=1709594&a=13134234&f=0

PerL
92 Cabrio 2.3E