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The PO730 is a code for the shift control system for the transmission. There are a couple of solenoids that could be causing the code. You would need to take it to a repair shop that can properly diagnose the problem for you. The P1456 is A EVAP system fault. It could be as easy as replacing the gas cap with a factory gas cap or it may something else in the EVAP system that is causing the code. Again a proper diagnosis would be the answer. There are quite a few things in the Evap system that can go wrong.
Check the brake fluid level to make sure it is where it is supposed to be. You will need to take the car in to a shop for diagnosing the ABS light. It may be a wheel speed sensor has failed or any number of other issues. The main thing is to remember you do not have ABS brakes as long as the ABS light is on.
Brakes on any car wear differently from driver to driver. Most cases you should be able to expect at least 30-40,000 miles out of a set of brakes. There are also a number of other factors that can cause premature brake wear on any type of car. The brake caliper slide pins may not have been lubricated properly when the brakes where intially done. This will cause the brake caliper to sometimes stick and cause premature wear and can damage the brake rotors prematurly as well. Alot of factors go into getting the most out of any brake job. The type of brake pad material that is being used is one main factor. Brake pads for any car can be purchased as little as $20.00 or as much as $85.00 for the same car and application. Ask what happened to make the brakes wear in just 20k and the shop should be able to give you some sort of explanation.
We just had that same issue in our shop about a week ago. We used a factory pump and sending unit from Ford. We found that the wiring for the pump is backwards from the factory and turns the pump in the wrong direction. You will need to remove the fuel pump and switch the wiring. This should take care of your problem.
Some testing will need to be done to verify the problem, but it sounds like it may be the main window switch has failed inside the car. Get it to shop where they can test it.
There is a very good chance that the truck has a blown head gasket. Need to get it to a shop and have it prperly diagnosed. I would have thought that the Firestone shop would have done this before charging a customer $ to make a repair that they probably knew would not completely fix it.
Give High Tech Transmissions a call. They can do the job at a reasonable price. 703-849-8222
Have the shop move the new tires to the rear of the car a test drive after that. This should narrow down what is going on with your new tires. Michelin and all tire makers are constantly changing and renewing their tire designs. Some tires that were available as little as 6 months ago may no longer be in the inventory for the different tire makers, this could be why you cannot find them online at the Michelin web site. Have the shop check to make sure if one of the tires has a bad belt or if one of the wheels is slightly out of round. Good luck!
What is happening is the computer system is trying to compensate for the lean condition that it is seeing. Lean means not enough fuel, so it is trying to increase the fuel where it thinks that it is lean. Best to get the check engine light taken care of and the engine will go back to using less gas. You should take the car into a shop so they can further diagnose the check engine light.
If the leak is from a p/s hose or a bad enough seal leak within the p/s pump, there is no stop leak avaiable to stop the leak. Some stop leaks work ok at swelling seals to keep them from seeping, but this is never a complete repair. I consider that just a bandaid at best. If you want to try a p/s stop leak try the one from Lucas. This is much better than the Prestone and will probably mix ok with the MB fluid.Just remember to stop the leak more than likely something will need to be replaced. You also need to remember that this system is under pressure and as the leak gets worse the more quickly the fluid will leak.