Question about 1999 Volkswagen Beetle
If there is no other damage to the engine, and the only problem was the radiator, then you may have left some open connector when replacing radiator.
Check the contacts to radiator thermostat sensor (the ones that start the fan).
Check the air intake, there are two sensors in there (MAF AIT) if you messed up wiring to sensors, the car will crank and turn off.
Check that there is spark on all plugs. Check wiring from distribution.
Ensure that fuel pump is working and have pressure.
Test power to injectors.
If you want to know for sure what the problem is you must connect the car ECU (computer module) to an OBDII scan reader and get stored fault codes, this will tell you what is wrong with the car.
Here the tools you will need to test the car at home.
If you want to DIY this is the only alternative to the garage, unless the problem is obvious (eg you see open connector at a glance):
OBD II Code Reader
Vacuum and Fuel Pump Tester Kit
SPX 3398 OTC Fuel Injection Pulse Tester
Actron CP7848 Pocket Electrical Tester
Posted on Jul 22, 2009
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Posted on Jan 02, 2017
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