85 ur-q rough running

[William Elliott]

I have a strange one here...

The '85 UrQ spent the last couple of weeks at a local German car shop
having the AC updated to 134a.  While waiting for parts, I told them to
go ahead and throw in a set of injectors... a chore I simply hadn't
gotten around to. I knew 3 injectors were leaking.

I picked up the car Thursday afternoon. It ran great, warm starts were
never easier, and it was terrific to have AC again.  I put about 15
miles on it running around town.  I wound up the boost a couple of times
and everything felt great.

Then Friday morning, I drove into town (2 miles) ... no problems.  Nice,
morning commute driving, no boost, etc. Suddenly, the car started
stumbling badly. Even with no load, the engine would stumble and sputter
when given gas.  But once to 2500 rpm or so, the stumble disappears. I
tried winding it out under boost and it ran great. But pulling away from
a stoplight is painful.

I spent a few hours this weekend making sure all the hoses were on good,
all the relatively new plug wires are good, rotor/cap okay, etc. Checked
out idle switch, no problem. It starts easily and idles fine, but
stumbles under any throttle, load or no load.

What gives? The only recent change was the injectors. 

Bill Elliott
Lake Barrington, IL