Where do I begin?!

Wouldn't turn over so I replaced the starter. I'm by no means mechanical but after getting the intake manifold off, starter in, everything back together (sort of) and having her crank right up, I feel like I can fix anything....While taking the intake manifold off, I found that the intake box was cracked in a few places. I found a used one on eBay, installed it yesterday and it still cranks, but while in park the RPMs start creeping up and then dropping back down to idle. A quick google search says that it could be a vacuum leak or a MAF sensor issue. Any thoughts?

Second, is there a manual anywhere for this engine on how to figure out what's what? I'm a software engineer and have a good sense of technical hardware/software, but need a little help in the mechanical space. Any and all help would be great.

Lastly, both the maintenance required and check engine light are on. How do I figure out what the check engine light on is for?

 

Take a picture of the crack for us.

 

I replaced the one with the crack in it.

 

Put a can tool on it and get us the codes.

 

P0661
P1505
P0505

A few things as I read about these online. When taking the intake off a some anti-freeze did leek out so after assembling everything I added some back. How do I check for a vacuum leak? A few of the electrical plugs did break on me when removing. I have them all seated and in place with zip ties until I can verify this thing is going to run a good bit longer, then I'll work on figuring out how to replace those.

Thanks again for the help! I'm learning a lot!

 

A few new things have come up. I checked the IMRC and the sensor wasn't plugged in (one on the bottom). I plugged that in and then got the following four codes:
P0661
P1505
P0505
P1077 (this is new).

I cleared the codes then let the engine run for a few minutes and am now just getting 1077. It still starts and then revs which from what I've read says a vacuum leak. How do I check for that?

 

You need a scan tool not a code reader.

 

This is what I bought.

https://www.autozone.com/test-scan-a...ool/273349_0_0

Sorry for the dumb questions, not sure what’s the difference is.

 

That link to AZ has about everything EXCEPT a scanner.

 

A simple Google search will come up with many places to get access to CRV Gen 2 service manual.
Here is one. You can use it on line or download each section

https://procarmanuals.com/honda-cr-v...5-shop-manual/