Why check engine light turn on and ain’t running good after a valve cover gasket on a Tacoma 2.7

^^ this you might have a vac leak. Also the spark plugs is 12-14 ft lbs I believe. Check those too

 

Thank you I really need to get this working anything helps

 

Vac leak?

 

https://www.tacomaworld.com/threads/rough-idle-after-valve-cover-gasket-job.307160/

Try read through this thread. Not same engine technically

 

could be a cracked plug

 

So my spark plug never have a gap I guess I bent it putting it on now check eng light turn off but still get low idle ?? I replug the obd in and it doesn’t give me no code

 

The truck will learn how to idle properly on its own.

 

Drive it around

 

If runs but it’s a little low idle but better than what was

 

What is the rpm’s at idle?

 

500 and sometimes 1000

 

1000 is ok, 500 is too low. Maybe clean the maf sensor?

 

Ok I’ll try thanks

 

Make sure you use maf cleaner, not electrical cleaner or whatever crap they sell at some parts stores.

 

IMO my Tacoma takes a bit of time to relearn Idle after disconnecting the battery. The first few times it happened it scared the crap out of me. Now I brush it off and just drive it until it corrects itself.

 

So should I disconnect the battery again cuz the idle is low again it came back good

 

Is the CEL light off?

If no light, leave it alone and just drive.

If the light is on, yes take the battery cable off to clear the CEL.