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Leaking engine? Cracked hoses? Or something worse....

Hiya folks. Been with my gtt for a little while and problems have been popping up but I've been getting those fixed as soon as possible. Had the ac compressor replaced last week and everything has been running fine until today.

Went out in the afternoon and found that the car was going through some really rough idling. Usually its at 1300rpm but today was going up and down between 2500 and 1800. Oil temperature went wayyy up in the 100+ usually its at 70 - 90. 

Pulled over and had a look under the hood. Looked near the back of the engine towards the firewall and saw that a plug or a nozzle had cracked or popped. Not entirely sure what it is... Seeing if anybody here has experienced anything similar.. Or any idea whats going on with this. Any help is much appreciated. 

 

20170702_160725.jpg

It's a cap, because someone has blocked off your heater setup. Either replace all of the caps, because they look crap, or put the hoses back to make the heater operational

Why does your car normally idle so crazy high?

4 hours ago, Ben C34 said:

It's a cap, because someone has blocked off your heater setup. Either replace all of the caps, because they look crap, or put the hoses back to make the heater operational

Why does your car normally idle so crazy high?

Ahh, icic, will be getting it replaced today then, along with the other one :) appreciate the clarification. I know the hoses were removed because im told the previous owner had some leakage problems. Not too sure why it idles high but have been trying to figure everything out since i got her earlier this year :)  Thanks again. 

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