2000 Blazer P0171 P0174

[@billraske7]

Mine had same symptoms. Been shuttering for months. Codes kept coming up. Sure enough, hose was disconnected. You saved me by posting this. Thanks!

[@lordsosa1508]

If you don’t mind me asking, how long did it take for the graph to go back to normal?

[@JoBianco]

Exactly what happened to me, wondering if I need to clamp it

[@billgoldenmusic]

Same thing happened to me, threw a worm drive clamp on it.

[@MicheluceRizzuto]

And then the tech that worked on it last week got an arse chewing for leaving the hose off. But more importantly he/she did not verify the repair during test drive and never looked at the scan data after performing the tune up, otherwise that would have be picked up on almost instantly. We all must verify the repairs every single time in order to defy the negative stigma that the general public sees us with. The one I see most is not verifying an evap system issue and assuming the health of the system is all good now that the vent solenoid has been replaced. Or purge control, or whatever got replaced. Too many times a client comes in and says 'they told me to drive it for a couple days and see if it comes back'. Well, that's not good enough. We must say with 100% confidence that the problem is fixed every time our client picks up their vehicle.

[@stevenauclair3442]

Lots of the time a mechanic at a shop will tell you things based on what they see and not what you know because and their eyes the customer he's just bitching. Given the circumstances with this situation, gives late into the idea of why they wouldn't have fixed s*** in the first place.

[@JamieHPateJr]

What if it’s not that ?

[@fixingcarswith15thstautomo36]

If you have these same codes stored then your engine control module is seeing an excessively lean condition. This can be caused by the condition on this video, a weak fuel pump, a dirty mass airflow sensor, a leaking intake manifold gasket, or any of several components leaking unmetered air into the intake system.

[@therantman879]

Is there any videos that actually show how to fix these problems without it being a "free fix" funny all the videos are some easy to see hose disconnected.. so what do you do when you have this problem but it's not just a disconnected hose? The only videos on yt say oh it's a vacuum leak or o2 sensor lol it's not. How about we make a video talking about the spider injection..