Engin light on after an oil change and break job

Hi,
Sounds like the oil light and sender are doing their job. They are telling you, you are losing oil pressure. That will happen if you are low on oil or have pressure problems. Add oil and see if the light goes out and pressure returns. You may have leaks or a worn out engine.

I just called my local Autozone and asked for a brake light for a 2004 Jetta, they asked the engine size. I told them I was looking for a buddy of mine and I don't know the engine size. I told them the take to a dealer thing in the manual. They sell the bulbs for around $6. They are Sylvania. If it were a dealer only thing autozone wouldn't sell the bulb. Take it to your local autozone/pep boys/advanced auto store and they will replace it for you at no extra charge. I know autozone does this for sure. If you can do it yourself just remember to wear gloves to prevent the oil from your finger prints from getting on the bulb. This is especially true for headlights. The oil can burn thru the glass and blow the bulb prematurely

The exact locations and picture of Engine Coolant Temp (ECT) sensors on 2004 VW Jetta TDI:

1. ECT sensor 1 placed on cylinder head:




2. ECT sensor 2 placed on the left bottom side of the radiator:

Consult the Owner's Manual, or view the oil specifications on the fill cal or dipstick (usually the fill cap) located under the hood. Depending upon mileage you may not want to vary from manufacture specifications, or risk voiding your vehicle's warranty should any remain. The VW TDI's are typically high maintenance engines. I would strongly recommend staying with the manufacture's oil specifications, and do not overfill the oil in your vehicle.

VW's somehow got around disclosing what the check engine lite codes mean to anyone except a VW Dealer. Therefore, to eliminate another service charge from a local repair shop I recommend you take the vehicle to VW and have them scan the vehicle's ECU for codes and do the repair accordingly.

Must hookup computer scanner to obtain diagnostic codes. Problem must be repaired to keep light off.

your break light switch is bad and needs to be replaced it connects to the break peddle very easy to change

If your catalytic converter is "below efficiency" or otherwise clogged, you will lose power as you drive and the vehicle heats. The more you drive the vehicle, the worse the problem will become. The exhaust can't escape properly through the catalytic converter, therefore your engine won't run properly. Your issues are related, and if you replace your catalytic converter they should go away.

has the dealer hooked up a mechanical test guage to see if the oil pressure is really low? If it is low make them fix it, low oil pressure will destroy the engine in a very short time. Low oil pressure is caused by either worn engine bearings or a defective oil pump.

Hi Dohn. The save levelto fill you oil is 3/4 from empty on your dip stick. This gives the engine space to breath. What has most likely happened here is, the engine has had too much oil and is trying to find a way out which will end up on your drive or through yor exhaust.