Ever since I had to replace a hose from the heater core to the engine my car has been idling low and sometimes not staying on at all. I’ve tried messing with the tps and even cleaned the bac but nothing is working. Does anyone have an idea or same problem??

 

Did you ensure that you did not knock any vacuum lines loose or off when replacing the hose? Did you check for any connectors that you may have unplugged on the emissions rack near the dynamic chamber?

 

I actually figured it out yesterday I just need to clean the little screw at the top of the throttle body haha