I have a 2003 VW Jetta GLS 2.0L automatic, and my check engine indicator light won't go out (cleared codes...disconnected battery, etc.), and I continue to get this annoying code relating to my ECT sensor, which I have replaced, at least the one located atop of the engine on the driver's side (was black, but replacement is green), thus allowing my cluster's temperature gauge to now work (did not before). The dealer is telling me that if I still get this code that it's probably the thermostat that I need to replace next, and if the problem persists, I should consider replacing my water pump. I was not born yesterday, and was fixing my own [COLOR=green ! important][COLOR=green ! important]cars[/COLOR][/COLOR]
most likely well before these guys were even a twinkle in their dad's eye. At first, they explained that it was an "electronic thermostat" problem (but I caught them lying to me). I originally thought, "O.K., maybe with all of the computer controls these days, this might be the case now". So I look for it (I finally found it - attached to the end of the lower [COLOR=green ! important][COLOR=green ! important]radiator [COLOR=green ! important]hose[/COLOR][/COLOR][/COLOR]
at the block, behind and just below the alternator), but with no wires attached to it. As a matter of fact, the housing for it looked oddly like the ones I've seen all my life (of 50 yrs.), so I googled this so-called "electronic thermostat", and to my surprise, I found that the thermostat for my Jetta is just the ordinary mechanical type, not electronic at all!!!! [COLOR=green ! important][COLOR=green ! important]My [COLOR=green ! important]car[/COLOR][/COLOR][/COLOR]
does not overheat, and it does not take too much time either to warm itself up, and all fans work great too, and the heat is great, so the thermostat is working just fine. And if this is O.K., unless there is a flow sensor I don't know about somewhere, my water pump must be working just fine as well. I called the dealer again yesterday and asked them about another sensor I found, attached to the lower part of the radiator (driver's side), and was told that this was the sensor the engine computer actually uses to get coolant temperature to the computer, so my question now is: is this the sensor I should replace next? They say this sensor rarely goes out, but it can't be the thermostat NOR the water pump causing my problems now, because they are both working just fine. Hmmmm!! Has anyone else had this problem? I just keep getting the "maybe it's this, or perhaps it's that" kind of answers from the so-called "experts" at the [COLOR=green ! important][COLOR=green ! important]dealership[/COLOR][/COLOR]
(electrornic thermostat, MY %@@")!!! I think the dealership is hoping I'll be gullible. My old 1998 Jetta 2.0L I sold to a friend, and the car at that time had > than 130,000 miles, and up to that time I had virtually NO problems with it at all. It was the best car I've ever had. So why is this car giving me SO MUCH GRIEF?