Over but wont start

Yes I have replaced the crankshaft sensor, fuel pump and fuel pump relay so you have any idea how much they charge for programming one and is your guess a bad computer?

The check engine light comes on for a second and quickly fades away

The other day getting on the freeway my car died at going 30 miles and I are the car will not start and it seems the battery will not hold a charge I've changed the fuel pump the crankshaft sensor and still but will not start please help

2.0L GLS New Beetle won't start. Cranks just fine, but won't catch. Spark is fine, no codes, check engine speed sensor and read 960 ohms (in spec according to Chiltons.) Fuel pump is gettign +12VDC at harness when cranking, but can't hear pump run, and no fuel is delivered to fuel rail (disconnected supply line from regulator to verify.) Pulled fuel pump/sender assembly from tank and check all wiring in the assembly; continuity is good. Pump itself reads 1.0 ohm, and when hooked up to a battery, runs vigorously and moves water well. Only strange thing is that whenit runs, the little +-shaped hole next to the negative connection tab(right side of included picture) spurts fluid along with the discharge. Is this an acceptable condition? Do I need to replace the pump, or just put it back together and hope it works? Should i flush the pump with gasoline before putting it back in the system?

I have a VW 2002 disel beetle and this afternoon I was driving out of a parking lot and as I change to third gear from second the speed excelerated in only a few seconds up for 80-90 km/hour by itself. The rpms were all the way up to 5 and past 5. I put the car into neutral and put the breaks on and the rpms were still up very high and the car was filled with smoke aswell as the outside of the car and then a shut off the car. My engine did not start anymore and I had to get it towed from an intersection to my house.

Since 2012, I got the heater fixed, all brakes routers, etc, I got 3 glow plugs replaced but the 4th one was seized and I didn't have enough money at the time so therefore the check engine time stayed on, and I got a new battery about 3 weeks ago when the origional died on me. My plan was to sell it next month but I did not make it there. I have an idea of what is wrong becuase if any standard car was excelorating their maximum rpms in third gear and going 90km an hour the engine probabl blew up per say. Please help!

Eveey time I try to start my car a ring goes off like an alarm how can I get it to start again without having to take it to a shop I need the car running asao so that my wife can get to work and back o need to know the exact issue because I'm doing this ar home and I did try to unplug the battery for an hour but It didn't seem to work I tryed looking at fuses but nothing seemed to help

My car will starts fine when you turn the key fully
clockwise, but after engine starts and you release key
engine stalls. Put computer reader on shows no code faults.

Due to stupidity, I added a gallon of antifreeze to the oil system. The car has not been started or run since I performed this stunt. Can I flush the system to get the antifreeze out, and if so, how? I know I will have to also change the filter again.