Hi all, my Chevy blazer 1995 4.3 vortec showed me 2 fault codes, 22 - I saw on internet that this is Throttle position sensor this shoudlnt be a problem to change , but am little worried with 32 code that should be EGR valve , but Am not able to locate egr valve on my vehicle. I checked some videos on youtube, it should be below throtle body , but it is not . I think that I got older model that doesnt have EGR , but then what is this code?just want to add that I see that Im having something wrong with idle speed as well, it goes up and down even while driving, sometimes the service engine control turns off as the idle speed goes to normal and when it goes up again the control light turns on again, can this be related? Any ideas how should I proceed with the repair? Thanks for any advice!

 

Hey, No need for advices any more. I was able to fix this issue by replacing TPS sensor and I noticed that one vacum hose from throtlebody was not conected (its also visibe on the pictures- it was just stuffed with some screw) so I plugged it in and service engine control light is gone , AM just little confused why my car gave me the 32 fault code... I was about to change also MAP sensor ( as I read it somewhere, that if its not EGR than it's MAP sensor), but as I said there was no need...

hope that this might help someone with same problem....