Q: I found a small puddle of coolant underneath my car. Today I opened the hood, and I see a puddle of coolant.

asked by on October 02, 2016

I opened the hood and found a puddle of coolant sitting on something that sits underneath the engine. I suspect it's a leak from somewhere near the engine. The coolant doesn't leak from the reservoir tank, but near the engine. My reservoir tank constantly gets Low on fluid. When I turn the AC on my engine or plastic cover over the engine trembles and vibrates horribly. What's going on?

My car has 108000 miles.
My car has an automatic transmission.

Oil/Fluid Leak Inspection $94.99 - $114.99 Get a Quote

Hello, thanks for writing in. If you are finding puddles of coolant underneath your vehicle then there is likely a coolant leak somewhere on the engine. A few places that leaks can occur at are at the hoses, the water outlets, the water pump, and at the intake manifold. The most common, and usually simplest to service being the water outlets. I would carefully inspect the engine to see if you can determine where the leak may be coming form and go from there. In regards to your engine cover vibrating, it may be possible that the cover is loose and needs to be torqued down. If it does not use hardware to mount, then it may be possible that the mounting cushions are worn. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Car not starting.
I would say the most common problem if you reversed the leads would be a blown fuse. If it's not that then you may have melted a wire or even fried the ECM. I would suggest getting a technician such...
Ignition interlock problem
Hello. The neutral safety switch allows you to start the car while its in park or in neutral. This is likely the cause of this problem. It is also a possibility that there is a problem with your shifter. You...
Coolant leaked out of car
I have seen this issue on your car before. The cooling system is air locked (air is trapped) and needs to be bled out. Infiniti's have a specific procedure for purging the air out. This procedure is dangerous, both to...
Car not shifting out of park
Your car uses a shift interlock that keeps it from coming out of park unless the brake pedal is pressed. If the brake light switch fails or if the locking solenoid fails then this will occur. The most common failure...
Gearbox Faulty Message appear on dashboard screen
A gearbox message means you have a transmission fault. The fault could range anywhere from a faulty sensor, bad solenoid, to a mechanical issue. The first step is to have the computer scanned for fault codes. A generic scan tool...
My car starts and runs but after getting up near 200 degrees it starts to sputter and stalls. It will not restart until it cools o
You will need to see if you have lost spark to the spark plugs after the engine dies. If it did then you most likely have a bad distributor assembly behind the water pump. Make sure you replace the spark...
4 days after dealership replaced headgasket I need a new transmission
Hello. The sequence of events and multiple failures you are describing are unusual. To replace a head gasket at 95,000 miles is unusual, except in a circumstance where the engine was overheated at some point in its life. Because you...
Coil light flashes when driving my 11 plate audi a3 sline
It is likely that at least one ignition coil is misfiring. With the engine management light on, there should be a fault code set in the system. This will lead a technician to find which coil is misfiring. Have a...
1996 corvette random misfire at highway speeds
A possibility is vacuum leaks around the intake. If the lobes on the camshaft are worn, that can cause a misfire and other inefficiencies as well. I would first check for a vacuum leak. If no leak, secondary firing patterns...

Related articles

The Best Used Cars to Buy If You're a Dog Trainer
If If you are a dog trainer, you expect a lot from your vehicle. You want a ride that is safe, roomy, and of course, dog friendly, since your training operation will often mean that you need to transport the...
The Best Used Cars to Buy If You're a Farmer
If If you're a farmer, you know that what you need isn’t a used car – it’s a used pickup truck. How else are you going to haul around hay, implements, garden produce, fertilizer, and all the other things you...
How Long Does a Transfer Case Output Shaft Seal Last?
The The transfer case output shaft seal is located on the transfer case of vehicles with four-wheel drive. This transfer case allows you to switch between two-wheel drive, neutral, to, low four-wheel, and drive four-wheel drive. The case consists of...