When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
hi guys still getting cel coming on code 171/174 tried 3 hego sensors ,maf sensor,pcv valve ,iat sensor looked for vacuum leaks, was wondering if a bad egr valve could cause this code seems to only happen when it gets below 25 degrees f.thanks Mike