Car feels like its going to die when driving it on 1990 Cadillac DeVille

I have an 90 cadillac, when i drive it it feels like its gunna die and i put a new fule filter, fuel pump new spark pulg and wires took off cat converter i took it to get fix 4 times and they still cant figure out wat it is. i was just seeing if you could help me out on this.??? and to see what the Problem is?

by in Liberal, KS on December 12, 2009
4 answers
ANSWER by on June 21, 2010
disconnect the mass airflow censor if it clears up replace it
ANSWER by on July 22, 2010
Your EGR valve may be clogged. Purchased on eBay or Amazon for $67.00--max 1hr labor--Most common reason: throttle body requires cleaning--remove air box chamber atop throttle body--you will see two valves--open throttle--you will see gum, varnish, black sticky mess--spray throttle body cleaner--clean until bsm is gone--you Caddy will run better--last replace the $5.00 pcv valve--check out Seafoam treatment for throttle body--tmy_09@comcast.net Almost forgot--check the hose connected to the engine valve cover and air box--if cracked, replace first
ANSWER by on August 03, 2010
Hi, Have no answers...looking for same answers for my Cad DeVille. Changed tensioner pulley, idle pulle, motor mounts, two oil coils, spark plugs/wires in past 5 weeks. Now they think it is the fuel injectors. Did ou solve your problem. I go for all servicing and oi changes so at 174,000 miles and recent repairs there will be nothing to do on the 190K servicing but it is idling very roughly and driving roughly.....
ANSWER by on March 16, 2011
i had the same prob with mine,i changed wires plugs fuel filter,and ya know what,it was a fuse!...fuel injecter fuse..i was stuned