I have a 1990 Deville coupe, 4.5 L engine. The car did run great till about 3 days ago. I noticed some hesitation very slight when taking off.
Now I ve been using Lucas inject cleaner and seafoam regularly and I got about 22 mpg avg. Car was actin kinda lopey on idle so I suspected a bad egr valve as the code e 48 and e 49 came up on my check engine diag.
Took it to a shop and they said it was a cracked diaphram needed a new egr. Ok 258 bucks for it. Wow. Ever since they looked at it it s een getting worse. Now I cant drive it cause it will stall if I try to pick up any speed over 30 mph. Had a new cat convertor installed 3 weeks ago. It has new plugs new alt. New air filter new gas tank new canistor for fumes. Egr is original. Any suggestions? I drive this car everyday and super sweet ride. Hate to have to put her down when I ve got soo much invested
have the same problem?
Saturday, August 27th, 2011 AT 10:51 PM