[Lord Cadillac]

Okay. I have a '95 Fleetwood Brougham and if I hit the gas VERY lightly, like going in reverse or very slowly in drive - it feels like I've got a miss. Someone mentioned to me that the EGR valve may need replacing.. So what does it do?

 

[Lord Cadillac]

Wes is good - isn't he? So how much does it cost to replace one of these things? Can I do it myself?

Thanks guys!

Damn Wes, you were doing great 'til the last sentence. I know of no engine that applies EGR "constantly".
Wes is correct right up until the last sentence Sal. By "diluting" the intake charge it stops detonation and cuts emissions among other things.