Ouch!!!

The check engine light came on in our car. It's a 99 Maxima... it's paid off. Rick drives it to work and I drive it to work on the days he is home with the kids. The estimate we got today. $2,200.
NO JOKE. Ouch. We have a friend who works on cars so he might be helping us out and getting our business but the car probably isn't even worth $5K. Do we keep it? Do we figure out how to purchase something else? I jokingly said, "is this your plan on getting your motorcycle?"
Then the estimates on our backyard- we had the trees cut down- we want to redo the entire thing. Rick wants to do most of it by himself to save money. Well, we've had some bids this week for doing some work to help him out- rock wall, leveling, and sod. The first one- four grand, the second one six grand. DOUBLE OUCH considering when we moved in four years ago we had the ENTIRE yard landscaped for six grand. What is going on people??? So if you know of a good landscaper who doesn't charge an arm and a leg and half your torso pass on the info. Well maybe not. Now that I think about it we'll probably be getting the car fixed instead of the yard.
In the meantime, here's a photo. The top part closest to the house we want do a flagstone patio. The bottom part we want to make level and all grass for the kids play-swingset. It looks level in the photo but it's not.