I highly doubt you have a 2.8L from 1998I have a 1998 that keep giving me a a stupid p401 code- there is a new egr -egr tube to the manifoid. I just took a guy who has a emission shop and it keeps on saying its not ready to do the test. and then I get the code. Any ideas??
can anyone answer this? I have a 92 2.5 and just jumpered the codes using a piece of electrical wire but will try a paperclip next. SES light comes on and stays on during test. No flashesI am trying to figure out a bad running s-10 blazer 2.8 TBI When I short across the terminals A and B on OBD plug I get no response from CEL it just stays on the whole time no flashing. Is it possible that ECM is bad even though the engine runs (very badly I might add)