Silverado running bad after cold air intake

[Colby Wagner]

Just installed s&b cai, and truck stalls out after start, when it doesnt it idles rough and sometimes kicks when starting to drive, it seems alot slower and is throwing me a check engine light please help! What do i do 

[btj_z71]

3 hours ago, Colby Wagner said:

Just installed s&b cai, and truck stalls out after start, when it doesnt it idles rough and sometimes kicks when starting to drive, it seems alot slower and is throwing me a check engine light please help! What do i do 

Check MAF sensor.  Sounds like a sensor wasn't plugged in or is dirty.  See if you or a buddy can pull an error code from the ODB port. 

 

If not, then you can try taking off the new intake and see if you get any errors with no intake (Just garage test, don't drive w/o a filter on there).  

 

If that works, then try putting on the stock or previous intake and see if you get any error.  

 

The idea here being to eliminate possibilities of error.  I would imagine it's a sensor somewhere knocked loose.

[LDM]

8 hours ago, Colby Wagner said:

Just installed s&b cai, and truck stalls out after start, when it doesnt it idles rough and sometimes kicks when starting to drive, it seems alot slower and is throwing me a check engine light please help! What do i do 

Scan the truck and get the code, that will tell you what the issue is for sure.

 

Either you didn't plug in the MAF or damaged it or you left something disconnected and you have a vacuum leak.  Its also possible that you may have damaged something else during the install process but those 2 are the most likely.

[NWI Denali]

Definitely sounds MAF sensor related 

[CrawlSlow]

As stated above, MAF or vacuum leak.

[pokismoki]

in the CAI intake pipe is two hose fittings to the valve covers, try disconnecting the two ports and plugging them with 5/8 water heater plugs from autozone.  this will stop any un-metered air from bypassing the MAF, then order a set of valve cover breather filters , install into valve cover ports.

 

dont forget to tighten the clamps around the tb and the maf

Edited August 28, 2021 by pokismoki