EGR Valve problems but not the usual problem

[Ja[M]z]

Yes EGR . Again . My car is throwing a Code 32 . Witch is : EXHAUST GAS RECIRCULATION (EGR) CIRCUIT

On W-body page the possibles causes are :

Possible causes include:
Faulty EGR valve-to-ECM connection
Plugged EGR passages and/or sticking EGR valve
Defective EGR valve
Defective ECM


The prob is : the last owner changed the EGR for a brand new one ( AC delco ) What can cause the prob now ?
I will check the EGR better tomorrow but it looks like brand new .

Thanks . Car is a 1992 3.4 dohc lumina

[Ja[M]z]

ttt

[Ja[M]z]

??? any ideas ?

[slick94prix]

What you really need to do is clean out the passages. I bet the old EGR was good, but the owner just didn't realize it. It is most likely all carboned up. Cleaning it should help out greatly.

[Ja[M]z]

yeah you re right i should inspect this . The job was done professionally tho , but i know who did it and its not the best mech you can find . did a good job but maybe he didnt clean up the whole thing
i ll check this out ... as soon as the temperature goes up ... so next cause just chekc what we got thie week end :

Friday Night: Mostly cloudy. Cold. Dangerous wind chills as low as -45,6°C (-50°F). Low -30,6°C (-23°F). Winds WNW at 16 km/h to 32 km/h.

Saturday: Partly to mostly cloudy. Colder. Dangerous wind chills may approach -45,6°C (-50°F). High -23,9°C (-11°F). Winds WNW at 24 km/h to 40 km/h.

Saturday Night: Partly cloudy early with increasing clouds overnight. Cold. Dangerous wind chills approaching -42,8°C (-45°F). Low -30,6°C (-23°F). Winds WNW at 16 km/h to 32 km/h.

Sunday: Mostly cloudy. Highs -7 to -11F and lows -23 to -32,8°C (-27°F).
bulls***

thanks