My check engine light comes on and the car overheats. I have taken this in to get fixed 3-4 times. Why does this continue to happen? I have to put in coolant when this happens so the engine will not burn up. I have often been stranded and am quite irritated that it seems to happen over and over again to the repair tune of about $1,000 and this is not even from a dealership. I saw your response on another problem regarding this and you advised to take to an auto zone and check the codes. Is this a problem that can only be fixed at a dealer and what might that cost? I am a college student and as you might guess, I can't keep doing this over and over again. Also, my heater seems to work sometimes and sometimes not. HELP!!
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There are a few. I have see the ground rust off, the fan motors burnt out, the fuse relay box. The best way to check is using a test light connect it to the two wires of the fan run the engine. If the light comes on before it starts to overheat then check the fan. If not the check the relay. But before you look at the fan make sure the fuse is good.
P0171 is LEAN and P0303 is misfire number 3 cyl. Its time to stop guessing and pay for a correct diagnosis. Find a shop that works on VW and has the tools to work on it. DO NOT put those Bosch Platinum Spark plugs in that Ottozone tries to sell everybody.
The coil pack on these are bad about being defective. You need to check to see if you have power coming from your coil pack. If you do not try changing it out, this produces 60k +/- volts that goes through your ignition wires, to your spark plugs and ignites the gas on combustion with the piston. If it's not giving off a spark, thenyou're not getting power to fire off the engine.
P0411 Secondary Air Injection System Incorrect Flow Detected
The 4mm inside diameter vaccuum hose gets pinched between the lower intake manifold and the secondary air pump housing, flattening it over time.
Here's a link to the steps to fix yourself if you are mechanically inclined... http://forums.vwvortex.com/zerothread?id=1995162
P1128 Long Term Fuel Trim Is Too Lean
It is very likely this code is coming up because of the vacuum hose as well.
check the following,brake fluid level,power steering level.radiator level,and oil level.also check out any rubber pipes for splitting around the connections as this will cause the engine light to come on as well.
water pump. water pump. water pump. i am a vw dealer tech and on 2.0 and 1.8t beetles the water pump impeller is plastic, and what happens is usually another component, fans, fan control module (under battery tray), thermostat, fails and because the impeller is plastic with just one overheat the plastic becomes brittle and shatters, pull the water pump out and you will see the impeller in 3 or 4 pieces. replace water pump and make sure t stat opens, fans come on (a/c off) and proper water pump flow.