Cadillac Tech Tips - How to fix it Discussion, How To Clean The EGR Valve in Item Specific Cadillac Discussion; When I took my egr out to clean it, I didn't use a new gasket. Never had a problem with ...
Sorry, I can't tell by the last picture, where exactly do you spray the carb cleaner? everywhere but inside the allen ekey looking hole?
You can spray it in there just as long as you're careful not to get it into the big canister portion of the valve. The carb cleaner will eat away at the insulation on the electrical windings of the valve if it does go in that area.
Good afternoon! I purchased my great grandmother's 1995 Cadillac Deville beginning of 2009. She bought it new in 95 and when she sold it to me she had put 36k miles on it, never drove it! But she always put regular gas in her when it should have been premium. In the short 16 months I have owned it Ive put 30k miles on it. Ive had to replace (not personally) the starter, hub bearing, ignition cyclinder, radiator, water pump, a/c compressor and got her a tune up...its a great car for the money I spent and Im def. queen of the road while driving her but the spark knock is frickin terrible (tune up helped at first but came back and seems to be getting worse). Ive put off replacing the EGR valve up until now and have recently learned that I shouldnt replace it I should just clean it...can someone tell how to go about doing this myself instead of having to pay someone to do it...I consider myself a smart girl but will definitely need the process to be broken down barney style...Thanx in advance!!
mrs.ramos, Post this (or ask a Moderator to move it) up into Northstar Performance - there are quite a few owners up there who have mid-90's engines and do a lot of maintenance on them.
The EGR is the small can-shaped fitting on the right rear of the cylinder head just behind the throttlebody - in front of your gas pedal foot area. Problem is, on a pre-2000 the valve itself is no fun to remove and there are also passages in the cylinder head surfaces which also clog up due to sedentary driving habits. You'll need coaching from the guys who have the same engine.
I just followed the instructions and cleaned out the EGR-valve. Replaced air filter as well. The car runs perfect without the jerky rpm at low speed. But here's a problem: the cruise control as well as the left power window on the backdoor stopped working.
Does anyone know why? I know this is a pretty common problem but I really don't want my top condition Cadillac suffer from this
Thanks Submariner409, mine isn't a northstar (1995 base 4.9L-1 year before Northstars came out) I spoke with a mechanic and he told me to replace the PVC valve first and since thats super easy Im going to try that first. I also located the EGR valve but hopefully I won't have to mess with it.
Great thread! I just cleaned my EGR and it did the trick. Biggest problem I had was that the last person to replace/clean the valve didn't put the brace for the fuel rail back on correctly, so it (the brace) was over the nut. I had to pry the fuel rail over with a screwdriver with one hand and remove the bolt with the other. That was sorta scary because I didn't want to kink up the fuel rail, but it was fine. I figured the guy who did the last job couldn't find the hole. I never have that problem.