I have a 98 blazer that failed emissions for codes p0452 & p0453 The check engine light is on most of the time but goes off occasionally. It has been staying on longer and longer as time goes by. What should I check first. I know it has something to do with the high and low fuel pressure sensor. Thanks!

 

https://blazerforum.com/forum/2nd-ge...-solved-41824/

http://www.justanswer.com/car/17wwp-...e-sitting.html

 

Thanks so much for your post on your find you have helpedme so much.