help tring to replace egr!!!

[jimmmmay]

tring to replace my egr valve on a 94 atx, how do you unscew the pipe or tube which goes into the bottom of the egr unit? there is no room in there and it just doesnt want to budge? the gasket was in pieces so i have a feeling there was air leak from there. bought new egr thinking it should come off easy!!! might just try to clean the intake opening and replace with new gasket but heck i spent $40 on egr??!! PLEASE HELP!!

 

[Foxwulfe]

Two ways

This is not a hard thing to do, but it looks so.

A. Bolt the EGR valve back on the intake manifold, put some heat on the housing/valve where the threads are with a propane torch for a few minutes, and use a small creasant wrench (probably set to maximum width) or stubby 15/16" wrench, either with alot of force to break free the nut. Hitting just the nut with a stream of something to cool it down (WD-40, compressed air, cooling spray, etc) may help it shrink in relation to the EGR housing, allowing the threads to break free easier.

Or

B. Unbolt the EGR housing from the intake manifold, and the pipe from the exhaust manifold, pull the three vaccum lines off, and lift or drop the whole thing out. Put in a vise and use force on the nut to get it off.

It is advisable to put a thin layer of anti-sieze on the threads of the nut for "next time".

However, EGR failures are usually caused by a plugged passage and nostrils in the intake manifold. A small caliber gun cleaning kit and carb cleaner works well. The EGR valve needle and seat itself can be cleaned. Might save you some time, money, and frustation.

Justin

 

[jimmmmay]

Thank you so much for your help, worked like a charm. One thing though i noticed when i installed the new egr i noticed the new egr had an exit hole on the base of it? Air comes out and it would seem alike a male hose should plug into it but the old egr didnt have anything there? Car runs great, you can hear air shooting out of hole but runs perfect no more idle jumping and the cel is not on anymore? Also you might know if there is anything i should know about spraying down my engine to detail it? Any suggestions besides just cleaning away with a towel would help!!!

 

[Foxwulfe]

If I recall, you should find a small diamond-shaped block-off plate on your old one, held in with a screw (or two) that you can replace there.

As far as detailling the engine bay, there is no easy way. Try using non-aluminum-reacting household degreasers, hose water, plenty of towels, and toothbrushes.

 

[jimmmmay]

my old egr was solid at the base there was no cap to cover any holes, i have placed duct tape around the holes to cover the air coming out. what i get now is a brief cel when i first start the car, it flashes and the rpms go up to about 1500-2000 then it kicks back down and the cel goes off and everything is fine?