I’m hoping someone can help me because I really don’t want to buy a new car. Less than a month ago, I took my car to a shop because the AC was blowing warm air. I thought it might be a leak since I also heard a hissing sound and noticed a smell (not a bad one, just noticeable). They initially told me they would put dye in the system to check for leaks. Later, they called back saying that if I hadn’t replaced the coolant before, it was probably just low. They didn’t mention any leaks or repairs.
Now, a few weeks later, the AC is blowing warm air again. My partner and I were about to take the car back to the shop for the same issue when an engine overheating warning came on. We had the car towed back to the shop, and now they’re saying a ton of things need to be replaced. I haven’t heard the full explanation or cost yet, but I’m worried that the original problem wasn’t fully fixed, leading to these bigger and more expensive issues.
I’ve attached screenshots showing the service suggestions and OK items from August 6th and today, September 5th. The first three photos show what was flagged originally and what was considered OK, compared to the new service items now. Can anyone tell me if this could be due to negligence on the shop’s part and if there’s anything I can do about it? 
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I’m not a mechanic, but if I were in your shoes, I’d consider getting a second opinion from a third-party mechanic to check this shop’s work. It seems odd that you initially took your car in for an AC issue that wasn’t fully resolved, and now, less than a month later, you’re dealing with low coolant and a leaking water pump. Something doesn’t quite add up.
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In my opinion, any shop that removes your cabin air filter, takes photos of it, and then re-installs the old one is likely trying to scam you.
Cabin air filters cost around $5-10, and the labor to replace them is more expensive than just buying a new filter. It doesn’t make sense for a shop to go through the trouble of removing and reinstalling an old filter just to suggest replacing it. Filters should be replaced at least once a year or every two years.
On the other hand, if your water pump is leaking, it needs immediate attention. A leaking water pump means the coolant system isn’t maintaining proper pressure, which can lead to overheating and serious engine damage. Additionally, leaking coolant is hazardous and increases the risk of overheating.
If your A/C isn’t working, it’s more about comfort. If the refrigerant has leaked out, it’s an environmental issue that’s already occurred, so it’s up to you whether or not you want to repair it.
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AC and coolant systems are separate. A leaking water pump can cause engine issues like overheating, which can lead to further damage. It’s important to address the water pump issue first. When you replace the water pump, most of the coolant will drain out, so you should replace the pump and refill the coolant to ensure the engine runs smoothly.
The AC system, on the other hand, won’t affect the engine. If the AC problem is due to a leaking condenser, it won’t cause engine problems. Focus on fixing the engine issues first, and once you’re certain the engine is fine, you can then address the AC issue.
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It looks like you have a coolant leak. I wouldn’t recommend driving with a belt that’s saturated in coolant, as it will need to be replaced as well.
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Just get another quote. You might need to tow it to a different shop though.
