the brakes work just spongy espesially in the morning. have to pump slightly to get pressure

my kia sorento 2008 overheats when im at a stop light but when i press on the gas pedal it stops smoking and also when i lift up the hood i notice clumpy brown stuff all inside the engine and dripping from up under the car. i put water to see if that was it but it was not I put some anti freeze in it to see if that could have been it because i did not have any but that was not it. What could this possibly be

My check engine light has come on for the 4th time and everytime its something to do with the emmissions system. The mechanic seems to be having to replace parts further and further into the system. Started with gas cap, then some kind of rubber seal, and last week the emissions filter. They do a smoke test each time. Does anyone know of somethimg that might be causing this issue. I'd rather get to the root of the problem than just fixing the symptoms. I have an 08 kia sorento ex 4x4 with 53k miles.

when exiting the car my door beeps. i have to put key back in ignition and wiggle it around opening and closing the door until the beeps stop

In addition to that my AC just went out. Are these 2 things related?

I see alot of complaints on this but not 1 person has came up
with a answer. Any one know how to fix???

The dash light is on showing front doors are open with an almost constant beeping, especially when turning left? I was told before that it was a bent sensor and when bent back in place it stopped. That was two years ago and now it's beeping again. How can I make it stop without a costly repair? Where are my sensors located? Thank you for your advice.

I already took it in the tps came up and I changed it and nothing changed I did the ten minute reset procedure nothing changed what's the problem please help me fix

When accelerating above 30, engine noise gets louder and feels like its in wrong gear. Cars an automatic. Going on for weeks. Now lights inside dim when applying brake.