If the ECT is bad, usually the car will run rich. This will result in rough running and poor gas mileage, especially as the car warms up. Replace it, as it's a common sensor to go bad.

However, Ghost is right. We need some more info. Where is the put-put noise coming from? Exhaust? Intake? Only at idle? Only when warm? Can you take a video with sound?

 

The put sound is coming from the front right of the engine(assuming you are sitting in the vehicle)..... kind of right in front the passengers side wheel
I can take a video in the morning. I've never had the CEL flash...it would just occasionally go on and off for a certain amount of time. It has been on for the last two weeks, however.

I just had an oil change with mobile one, and the exhaust sounds intact.

This was the only code to show up when I scanned it.

Like I said guys, occasionally the car has problems starting, and takes about 30 seconds of turning over to start...Sometimes I will have to regulate the rpms for about a minute to ensure it gets to a stable idle. Vehicle runs fine when driving though.

Spark plugs will be done tomorrow. Are sylvania spark plugs even worth putting in? I have a new set.

 

NGK BKR7E's are the plugs to get, they are cheap and run very well. the hard starting problem could very well be the coolant temp sensor. i still dont know what noise you are hearing, cracked exhaust manifold maybe?

 

I'll replace both...do you know anyone who sells NGK plugs? (autozone, etc.)

 

I pick mine up at checker. Depending on where you live, they go by a different name though. But you can find them most places. Good Luck.