I have a 1984 Porsche 911. after start up about two minutes both the dash oil light and the dash brake lights come on and stay on until I turn the key off. same thing every time I start up. there are no fluid leaks anywhere. the brake master resivor is full and the oil in the engine is full. the oil pressure guage is reading high oil pressure.

SOURCE: Engine Light stays on

It could be many things making you engine light come on. I would suggest taking it to auto zone or advance auto if you have one in your area they will check your trouble codes for free . With out knowing what trouble code is making your engine light come on I can not tell you witch part is bad.

SOURCE: 2002 suzuki grand vitara brake warning goes on and off

Do you have a brake fluid accumulator(ABS)? If yes, the pistons/pulsing assembly are worn, and may need to be replaced.

If not, you may have a vacuum leak in the power booster (located on the firewall). Check all hose and clamps for a tight fit/cracks,etc. Vacuum leaks cause intermittent brake failure lights.

You may want to park the vehicle on a clean surface, pump the brakes a few times, and check for brake fluid leaks. If there is a leaking wheel cylinder (back brakes) , caliper (front brakes), or brake line, you will be able to see it.

Leaks cause pressure loss, and, thus, the brake warning light will illuminate.

SOURCE: brake problem with 95 ford bronco

hello again, Your brakes are probably the most important part of your car. Without an intake system, you'll just sit there. But at least you won't hit a tree while you're just sitting there! Seriously, brakes aren't something to play around with. If your car is having a braking problem, whether it's weak brakes, a mushy pedal, grinding sounds - whatever your brake problem is, you need to troubleshoot and repair it as soon as possible. We'll help you diagnose your braking problem so you know what repairs to make. Brake Pedal Goes Too Far Down to Stop. If you step on the brake pedal and it feels like it's going too far down before you start to slow, you might have the following problems:

• Low Brake Fluid Level: Check your brake fluid. If it's low, top it off to the mark on the side of the reservoir.
• Contaminated Brake Fluid: Even though your brakes operate in a closed system, contaminants can still work there way into the works. Air can enter the system through the smallest hole, and you can end up with water in the system from condensation and other means. There's not really any way to check for this, but bleeding your brakes will remove the bad stuff and replace it with new fluid.
• Worn Brake Pads: Your brakes should never wear low enough to cause your brake pedal to feel low, they'll scream at you before then. But if they do get very low, you might have this problem. Replace your brake pads as soon as possible. Of course, this can be avoided with regular brake inspection.
• Bad Brake Power Boost Unit Finally, if your brake booster goes bad you'll have low brake pedal issues. Most brake boosters are vacuum controlled, so a special vacuum measurement device that connects to the brake booster is needed to check it. If it's bad, you'll have to replace the boost unit.

SOURCE: The BRAKE light stays on the dash all the time, I

they have sensor that can go bad sometimes.

SOURCE: abs and brake light staying lit

First you have to plug in a OBD II reader and pull any codes. From there you can start to diagnose the problems.
Do not wait, the abs (anti-lock brake system) is important and may affect your braking.
Please let me know what you find.