Heard loud blast under van driving and floor is now west passenger

See above

My car has 70000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
You may have had either a heater core that burst or the A/C evaporator that blew out. You need to identify the leak as coolant from the engine as it will have an oily feel and may have a green color. Do not drive the vehicle until this is inspected to see if the engine coolant leaked out or something else happened to the A/C. Your engine may overheat with no coolant in it. A certified technician from YourMechanic can come to your car’s location to pinpoint the cause and let you know what needs repair.

How to Identify and Fix Common car Problems ?

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The blower fan forces air across the heater core, warming it before it comes through the climate vents. If this heater core becomes damaged or corroded, it could leak. When it leaks, its position right behind the dashboard means you may find a puddle of coolant in the passenger`s footwell.
A leaky or blown head gasket is often what causes coolant to leak internally. Forming a seal around the combustion chamber, a head gasket is critical to preventing engine coolant and oil from contaminating that chamber and causing serious, costly damage to your engine.
Coolant/antifreeze leaking out through the heater core means that the overall coolant level in the system will be low and the engine is in danger of overheating – which is the most common cause of mechanical breakdown. The good news is that the things you do to protect your cooling system also protect your heater core.
Amazon.com: Customer reviews: 2004 Ford Freestar, 3.9L V6 Automatic Transmission, Black.
The heater core is like a small radiator. The blower fan blows air over the heater core, blowing heat into the cabin to warm you on cold days. Over time, just like an actual radiator, the heater core can spring a leak. If it does, you`re likely to get coolant mixture all over the passenger side floorboard!
That`s more likely to be rainwater seeping past bad window seals, bad sunroof weatherstripping or even leaking in from the doors. Water can get into the door panels, and should drain out onto the road — but the doors could leak water into the cabin if the drain holes become blocked with debris.
Gaskets and Seals

One common place of a coolant leak is the radiator pan gasket. The drain plug can also cause leaking, and if the cap that seals the radiator can no longer contain the pressurized coolant, it will leak or spray out from underneath.

Depending on the cause of leakage, you may get away driving with a radiator leak for a short time. Eventually, the lack of coolant will cause your car to overheat – which may in turn precipitate damage to various engine bay components. That`s why it`s a good idea to stop and inspect the issue as soon as you notice it.
Key signs to look out for:

Weak or no airflow. Cold air (not warm) coming through the vents when the heater is on. Coolant leakage visible inside the cabin or a damp smell.

The Freestar and Monterey minivan had nearly the same platform as the Windstar. The Freestar and Monterey minivan didn`t sell too well because people were buying SUV`s instead. This caused them both to stop being produced.
With careful driving and good care you may get to 350,000 miles, but be prepared for that transmission crapping out unexpectedly. If you are thinking that by trading it in you are cutting your losses, I think at 200K miles you are too late. IF the car drives fine, just drive it until something major brakes.
As part of the 2004 launch of the Ford Freestar, Mercury introduced its first Ford-produced minivan in a revival of the Mercury Monterey nameplate. Following a decline in sales across the minivan segment in the mid-2000s, the Freestar and Monterey were discontinued after the 2007 model year with no direct replacement.
Antifreeze (aka coolant) is pumped through your vehicle`s engine as you drive, absorbing excess heat and exchanging it with the outside air. That means an antifreeze leak could cause the engine to overheat — and that can lead to major engine damage.
Engine Overheating

A failed head gasket means the engine will have to work harder to create power. Furthermore, a blown head gasket can cause your vehicle to lose coolant, causing the engine cooling system to underperform, making the overheating situation even worse.

The head gasket seals the engine block and cylinder head, and if it fails, coolant can leak into the combustion chamber or escape into the engine oil.
Watch for leaks at the water-pump bearings and from the pump gasket. Check the thermostat housing for cracks, and the housing gasket for leaks. A rising temperature gauge , a pool of coolant beneath the car and a drop in the radiator level are signs of a leak. So are rust-coloured stains in the engine bay.
It may be a broken hose and/or a hole in the radiator. Solution: Check your hoses to see if any coolant is coming out. Replace the hose(s) if you notice coolant coming out of them. If you notice coolant leaking out of your thermostat that can be an easy fix.
The average cost to fix a leaking radiator is $340, with a range between $125 and $600. Your total cost will depend on a number of factors, such as the type of repair needed, the type of radiator you have and the materials required.
Pressure testing is used to check for leaks in the cooling system and to test the radiator cap.
Faulty heater cores can lead to overheating, and driving with one can be risky. Overheating can cause engine damage, so it`s important to be careful if you`re driving with a car that has a faulty heater core.
On most new vehicles, the heater core is inside the cabin of the vehicle. Even if you have an older vehicle with the heater core outside the cabin, leaking fluid can still find its way into the cabin through the ventilation ducts.
There must be a substantial leak in the hoses or hose connections from the radiator to the heater core, or the water pump is leaking, or the head gasket is blown. The seal in the coolant cap then may be worn or leaking. When your coolant heats up, it could escape as very hot mist or steam.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Heard loud blast under van driving and floor is now west passenger
ANSWER : You may have had either a heater core that burst or the A/C evaporator that blew out. You need to identify the leak as coolant from the engine as it will have an oily feel and may have a green color. Do not drive the vehicle until this is inspected to see if the engine coolant leaked out or something else happened to the A/C. Your engine may overheat with no coolant in it. A certified technician from YourMechanic can come to your car’s location to pinpoint the cause and let you know what needs repair.

Can front wheel drive car engine power rear wheel drive
ANSWER : Anything is possible with enough engineering. The changes you are looking at would take major structural changes and would definitely not be an easy job. You could possibly consult a manufacturing engineer to get more details on how this could actually be carried out and whether it would be feasible.

I heard a loud pop when driving on the expressway then noticed my C/H gague was going all the way up to the H do you think you can
ANSWER : This sounds like you broke the serpentine belt for the water pump, or one of the hoses came off, causing a loss of coolant, and the engine to overheat. Have the overheating issue diagnosed, and have the serpentine belt replaced, if deemed necessary.

Vehicle rumbles when driving also a very loud noise when driving over lane strips.
ANSWER : Hello, thank you for writing in. There are several issues that may cause these types of symptoms. The most common are improperly inflated or unbalanced tires. If you lost a weight off of the tires while driving, this would cause an imbalance and you would feel it at higher speeds. You should start by having the tires balanced and make sure they are evenly and properly inflated. You can then turn your attention to the wheel assembly including the control arms, struts, and wheel bearings if necessary. Balancing the tires needs to be done by a shop who has access to the balancer. And then further tests can be done by you at home with the proper tools. For more help resolving a suspension or wheel assembly issue, contact our service department to schedule an appointment.

Van loses power constantly – 2008 Dodge Sprinter
ANSWER : Is the Check Engine Light on, or is there any warning sign other than the power loss itself? One area to consider is to make sure all of the basic maintenance of the vehicle is up to date; This includes fluids, air filters and an ignition system tune-up. At 90,000 miles you should have serviced the engine oil and filter on a regular basis along with a fuel filter every 10,000 miles. The spark plugs, transmission fluid and transmission fluid filter were due to be serviced at 60,000 miles. Check your service records and if all of your services are up to date, and consider hiring one of our mobile experts for a personalized diagnosis and repair of your vehicle’s loss of power.

Strong knocking from front driver’s side and passenger side when making turns left OR right.
ANSWER : The steering rack and pinion assembly is mounted in rubber bushings; they may be deteriorated and allowing the rack and pinion to contact the sub frame making the knocking noise.

The other component to look at is the struts upper bearing and rubber bushing. These get dry of lubricant and should be lubed with a teflon grease when installed so the rubber will not get damaged.

Have someone feel the top of the strut mount under the hood while the steering is turned back and forth to see if the knocking or popping is in the strut. The rack and pinion bushings should be inspected from under the vehicle.

If either or both are bad then they will need to be replaced.

A mobile mechanic, such as one from YourMechanic, can come to your home or business to inspect the knocking noise at your home or business.

I own a 2000 f150 lariat 4 x4. 5.4 l. Started getting a loud grinding noise front passager brakes. Replaced brakes and wheel
ANSWER : Hi there. While using junkyard or used parts (especially brake or suspension parts) is highly discouraged and can cause major damage, it is unlikely that they caused the aluminum wheel to split in half. In most cases, this is caused by hitting a pothole or other obstruction in the road. A glancing blow against a blunt object like a curb can also cause this type of damage. However, if the brakes came apart or a brake component broke, it could in theory cause the same damage. My advice to you is to not drive the vehicle further until you’ve replaced the brakes and wheels with new components for safety.

while driving a I heard a loud pop that sounded like it came through the speakers, the electrical then went out
ANSWER : Hello there, many faults will cause your 2014 Ford F-150 to have a pop and the electrical system failing. You did not state whether the electrical issue is just with the accessories or with the entire vehicle. If the problem is just with the interior electronics the most common fault is a shorted wire, poor ground, or a wiring harness fault, all of these issues can be intermittent. If the electronics for the entire vehicle go out then the fault could be with the alternator, battery, battery cables, or a engine wiring harness issue. A qualified Technician such as one from YourMechanic will be able to diagnose your electronic issues and make any repairs required.