hey all,
I recently acquired a 2002 Pontiac Grand Prix GT with 304,xxx miles that I'm using as my daily driver. Surprisingly everything inside the car / all the options work. The only two things that didn't work when I got it was the windshield washer fluid pump (replaced!) and the cruise control didn't work which thanks to this forum I found out it was because of one of the bulbs in the third tail light being burnt out (also fixed!). The car needs a new wheel bearing on the front passenger side so I bought two brand new ACDelco ones to replace both of the front assemblies due to how many miles it already has and no service history available. I also have new pads and rotors to install for both the front and rear.
The only OBD2 code that I'm getting is P1811 so I bought a shift kit from Transgo as well as 2 gallons of Maxlife ATF and a new ACDelco transmission filter, haven't had a chance to do that yet. Also have the low coolant light blinking on and off randomly which I suspect is due to a bad coolant level sensor which I also coughed up the $56 to get a new ACDelco one that I haven't installed yet.
The only other issue that I'm having is with the cooling fans / temperature reading. Inside the car on the instrument panel the coolant temperature never gets above 185-195 but with my scan tool it's telling me that the engine is seeing it as 205-210. Why would they be reading so different? Is there different sensors for the ECM and instrument panel? Also, the cooling fans will not turn on, even with the AC turned on. Every car I've ever owned, including a 1999 Monte Carlo with the 3100 engine the fans always kick on with the AC, why would the fans not kick on? I had read that the AC uses the high/low pressure switch to kick on the fans and my AC blows cold so it should be turning them on. Fortunately I haven't had any issues with overheating and the car normally won't get over 210 even on long drives but I would like to resolve the fan issue in case the engine does in fact need them.
Any suggestions would be great!
Thanks,
Andrew