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Hello all! Make/Model:2000 Cadillac Escalade Engine: 5.7 LQ4 History:The truck in the past dropped idle every 15-30 secs at about 100 rpms for less than a second (like a misfire) thought maybe it would be a Idle Air Control Valve Replaced it with no positive outcome. The trucks misses in...

Yeah that nickle plated slip yolk has passed through my thoughts before. I'll try that out and see what happens. I'll also make sure the rear and forward u joints are in 45 degree separation from each other. Maybe those two fixes will result in success. I'll keep you guys posted for this to be a...

So as most of us know the years or late 90's early 2000's (mine 2000 caddy) have a factory defect in the transfer case oil pump. This defect wears a whole in the magnesium housing of the transfer case. Well mine like all defects surley did follow that path. A little back story for those who care...

Oooop never mind!

Yeah it has the old crummy spider injector assembly. Looks like I'm saving up for the new updated injector system. I attached a picture but I don't think it'll upload.

Personnaly i haven't taken off the plenum so i doubt it but i'll get to that this weekend and get back to you on it.

So I checked the purge valve. I traced it back up to the intake plenum and it seems like the lines and purge valve check out. The lines to the gas tank appear to be connected in all the right places but it makes me want to drop the tank and integrity test the connections... The purge valve looks...

Ok I'll try that. That's the hose towards the driver (front of the vehicle) on the tank correct?

Hello Everyone, I'm new to the forum so nice to meet those of you out there. So lets get on to my detailed question. I have a 2000 Escalade with the 5.7 ltr. I have recently replaced the fuel pump about 3k miles ago. I have noticed afterwards about 3 weeks or so that the truck idles rough or...