Top 20 2003 Ford Mustang - Page 6 Questions & Answers

does it have a coolant leak or have you washed the engine? Mine will miss under load if i get water under the coils...

check your fuel pump. its not getting adequate voltage when air is also on

4.6L Engine - replacing thermostat



CAUTION Never remove the radiator cap under any conditions while the engine is running, or while hot. Failure to heed this caution could result in cooling system damage or severe personal injury.

1. Drain the engine cooling system until the coolant level is below the thermostat.
2. Detach the lower radiator hose, the return hose and the degas bottle hose from the thermostat housing.
3. Remove the two mounting bolts, then remove the thermostat housing.
4. Remove the O-ring and thermostat from the housing. Discard the O-ring.

Figure - exploded view of thermostat and Housing - 4.6L engine

To install:

NOTE To prevent installing the thermostat with an incorrect orientation, the housing contains a positioning slot. Install the thermostat so that the bridge part protrudes into the housing, not into the intake manifold.

1. Position the thermostat and a new O-ring on the housing, then install the housing.
2. Install the two mounting bolts, and alternately tighten them to:
   1. 4.6L SOHC engines 15-22 ft. lbs. (20-30 Nm).
   2. 4.6L DOHC engines 89 inch lbs. (10 Nm).
   
   
3. Connect the lower radiator hose, the return hose and the degas bottle hose to the housing.
4. Fill the cooling system, then start the engine and check for leaks.
5. If necessary, top off the cooling system overflow reservoir.

1. Drain the engine cooling system.
2. Remove the air cleaner outlet pipe.
3. Remove the 2 thermostat housing bolts and separate the lower and upper thermostat housings.
   1. Discard the thermostat O-ring seal and remove the thermostat.
   
   

To install:

NOTE Lubricate the O-ring seal with clean engine coolant.

1. Install a new thermostat with the smaller plate facing upward and the O-ring seal.
2. Position the lower and upper thermostat housings together and install the 2 bolts. Tighten to 89 inch lbs. (10 Nm).
3. Install the air cleaner outlet pipe.
4. Fill and bleed the cooling system.

Hi, because there is no relay in the circuit, all the lamp power passes thru that switch. Recommend you check the stop light bulbs to make sure they are the low wattage bulbs specified for your car. The higher wattage bulbs will fit in, but they draw too much current. Please let me know if you have any questions, and thanks for using FixYa.

there is a treatment for Ford toque convertor for the amount of miles you have it worth a try it in all parts store

The radio SERIAL NUMBER is required for a code
First remove the radio from the dashboard.
Then post the radio make+model plus all the letters+numbers on any labels,barcodes or stamped in the metal casing.
This information can then be used to see if a code can be calculated

I suggest look in the owners manual; check and download for free in this links:
- https://www.fleet.ford.com/maintenance/owners_manuals/default.asp
- http://www.ownersmanualsource.com/ford/ford-mustang-owners-manuals/ (end page)

Hope helps (remember to rate this answer).

There are a number of reasons why the ses light can come on. In my opinion, the best thing to do is to read the codes with a scan tool. Some parts stores will do this for free, especially if the vehicle is OBDII (made after 1995). Reading the codes will help to determine the best place to start looking for the problem. Some of the causes are : sensor reading out of range, fuel trim out of range, emission control problem, PCM failure.

It sounds like a door ajar switch is broken. The door switches are located in the door on the latch mechanism. To get to it you will need to remove the door trim panel to gain access to the door latch.

The switch is available for around $20 - autozone part number SW1979 or SW3688

u should check ur transmission fluid to see if it is dark (burnt) if so ur gonna b outa luck u most likely burnt it up. fluid will also have a strong burnt smell if it is black. trannys build up alot of heat wen trying to get unstuck in snow an ice. diminished air flow through radiator or trans cooler wen stuck also adds more heat to the unit,especially wen running it hard on ice. they get hot really fast

suggest 1st that you check your battery connections,next,have your altenator checked,and battery,for FREE,at any auto zone or advance autoparts store.does the engine turn over slow? like dead battery? if so,we're headed in the right direction.your issue is with bad battery,bad battery,broken altenator belt. or maybe a loose belt. have these checked 1st and thank you for choosing fixya.com

Hi hope I can help.
1.Fist change the spark plug. this is the main cause of most misfires,
2.If that don't work switch your coils. (remove one of your other coils and switch it with the #3 coil. If the misfire moves to the other cylinder then you know you have a bad coil and it need to be replaced.
3.preform a compression test.
4 Also check your fuel pressure.
Hope this helps
Please leave feed back
Thank you urnuts73@ FixYa

make sure that your light switch is not on the on position turn it back and forth

YOU CAN TRACE THE SOUND, AND REMOVE IT!

Permatex makes a rear window defroster repair kit that you can get from most auto parts stores.

HI PADA
ITS GOOD YOU GOT A MUSTANG GT ITS A GOOD CAR THE RELACEMENT THAT YOU MADE WAS AN GOOD THING NOW YOU NEED TO CLEAN THE ENGINE AND HAVE A CLEAN SERVICE FOR THE CAR
THANK YOU

nutral park swich out of adustment or defective
brake light swith/ fuse/bulbs/wires to lights

have it plugged into to see what the code is. the computer is telling you theres a problem in one of the sensors.. most auto parts stores offer this for free. hope this helps

Your best bet, is to pay the big bucks
for the Ford Wiring Diagrams and the
Powertrain Control/Emissions Diagnosis
Manual

You can't expect people to tell you
what everything is.

Helm.Com-for manuals

ford has a saftey in which if your brake switch is bad, brake light fuse is bad it wont let you shift out of park basically what it tells you if you have no brakelights, also in order to shift the car the brake pedal must be depressed