[johndfw]

Hey Folks
Installed a new TPS in my 1987 Brougham. Boy what fun! The old one was stuck down to full throttle. I managed to let the TPS plunger fall into the carb bore. Spent about 20 min. getting that out.

All in all, it wasnt such a bad job.

Later

 

[N0DIH]

Make sure the carb body isn't crushed. My TPS was sticking when I tried to adjust it and I found the carb about 3mm shorter on that side due to a gorilla mechanic who tightened it down too tight. 10 lb fts! 10 ft. Lbs!!!!!!! And retorque every 6 months!

 

[johndfw]

Yeah. I think its in pretty good shape. This is the second Q-jet TPS I've replaced, and both were stuck down, and had some sort of crud built up on the plunger. The new one works great.

Later

 

[N0DIH]

Cool! A finely tuned Q-Jet is a wonderful thing!!!

 

[johndfw]

Hey again

After driving, I found that my secondary butterfly was floping around loose. The car would stall. I tightened the spring up and that helped. It runs as though it has a vacuum leak, with a sort of irratic miss in its idle.

 

[N0DIH]

Check to make sure the primary vacuum break is not disconnected somehow, either vacuum or linkage.

The spring and the vacuum break work in concert to give you the rate of 4BBL opening that you should have.

 

[johndfw]

The vacuum break is working. I pulled the vacuum line to it off while the engine was running.

The car is also running rich. Black crud all over the ground at the tailpipe.
I wonder if replacing the TPS has revield other miss adjustments, or if I screwed somthing up putting in the TPS

 

[johndfw]

The car was running much smoother before I installed the TPS.
I feel sure I screwed somthing up while putting the top back on the carb.

 

[johndfw]

I'm rebuilding the carb this weekend. Wish me luck!