I replaced my fan in my 2004 passat because the ac was not working 2 days later my alternator goes. Is there any relationship between the two?

Replaced the fan for ac and 2 days later the alternator light is on the car will need a tow to get serviced

I bought the car at 116,000 miles and at 122,000 it had ignition failure. I retrieved a P0321 code. I have charged the battery to 20.7 volts. Then replaced the Crankshaft sensor and the spark plugs, but it still won't start. The spark plugs are not firing. Tested the spark plugs outside of the combustion housing and there was no spark. I also checked the wiring amperage on the Coil wires and they were at 00.002. I would appreciate the help.

Both bulbs are fine

I've only checked the fluid level. I've been told to replace a few things but I don't want to play Russian roulette with parts and spend a crap ton of money. Just recently had a baby and money is tight. Please help!!!

My car seems to run "cool", only heats up to 190 when stopped. Blows warm air but never hot. Brought the car to mechanic and they said it's the water pump. It would be a $1300 fix. Does that sound right? Would my car be over heating if that we're the case?

my car is almost like sputtering when i speed up. i have no clue whats going on with it. it acts almost as if it could possibly be a fuel filter but the blinking check engine light caught my eye. any answers??

mechanic said it needs a new water pump and that we should do a lot of other things at the same time. the engine now leaks oil from the front end. is this a common problem and what should it cost?

The car overheated out of the blue but when I turned on the heater, the temperature came down.

My son said to remove neg battery wire to reset computer... could be water temp sensor/air in coolant. Light went out. 2 weeks later came on again. Repeated same, light out operation normal. Also since water pump/timing belt was replaced the coolant temp has been running lower by 10-20 degrees.

Car was bought in 2010 74K and in fall changed right cat after code P2096 came on. Spring of 2011, changed left side after cat code P2098. Replaced cats and install 4 new o/e sensors. P 2098 keeps coming on. VW dealership are stumped and local VW mechanics says vacuum leak but cannot locate? MIL comes on 71 miles, then 425 miles, then 120 miles. Need intelligent answer, I love this car!!!!!!!

now check engine light is on and stays on

The dealer has said two need to be replaced, and it will cost a total of $750. Just got done replacing the heater core.