i've noticed this has been getting more frequent the past few days, but at initial start up, my monte will run pretty rough. it'll chug and sputter and rpms will bounce up and down. but after a bit it'll run fine and not miss a beat.

no CEL comes on, and it runs fine other than that. i have noticed my gas mileage hasn't been too good either though.

 

possible fuel pressure regulator? once and awhile i'll get a long crank time too. and i know those are a common issue.

 

Why not just rent a fuel pressure test from auto zone or advance. Should help narrow if down.

 

im having same issue but its not alll the time if it dont get driven for two day or more seems to do it

 

Pull the vacuum line from your FPR and smell it, if it smells like gas it is bad.

You could also just really need a good cleaning of the TB and sensors

 

mine did that for the longest time...witn no codes etc.....changed everything...still had the same problem......just out of curiosity.....i started cking everything i could.....til 1 day the MAF failed and it ran like crap...huffn spittn poppn etc.....changed it out (new) MAF...and problem solved....but i had 120,000 miles on mine.....when i started messn up...


Next time it does it...unplug the MAF and see if it smooths out...if it does...thats the problem....

Hope this helps

 

Well I smell fuel lol

 

Well there ya go

 

That's cool I never knew that. I love all the cool little tricks you learn here.

 

If you pull the line and gas comes out... you have had a bad FPR for a pretty long time lol