How do you go about changing your engine coolant on a 1998 Grand Prix SE?
Well.. im not an expert, so there could be other ways, but the easiest way that I do it is to open the bleeder at the bottom side of the radiator, let it all drain out, close the bleeder, and pour the coolant into the radiator cap. Then start your engine, and let it warm up, when the thermostat opens, you should see the coolant level either drop, or start moving. Generally, it will drop. Pour more coolant into the radiator until you cant put anymore in. Put the cap back on, then fill the coolant resivoir(sp?). Remember to only use Dexcool coolant (the orange stuff). Its easier just to get the 50/50 prediluted mix. after driving it a while, check the resivoir to make sure its filled to the line. (cold if the cars has been sitting a while, hot if you've been driving it.
- ** *** **** DO NOT OPEN THE RADIOTOR CAP WHEN THE ENGINE IS HOT****
Youll more than likely get burnt with boiling hot coolant, so its a good idea to let the car sit for a while first.
if you are referring to the engine coolant level sensor located in the top of the engine coolant reservior (usually gives the message "coolant sensor bad" in the VIC when it is bad), it can be easily "popped" out of the bottle with no tools necessary and a new one "popped" back in its place. **mine is a V8 model this should hold true for the I6 as well
the fans are operated by means of a series of relays which are turned on or off by the engine computer. the engine coolant temp sensor that sends its signal to the engine computer is what indirectly turns on the fans. if there is no check engine light for a coolant temp. sensor code, the problem lies in the fans themselves, or the relays and related wiring.
There is NOT a choke on any fuel injected engine. The coolant temperature sensor does the job of what used to be the choke. When the coolant in the engine is cold, the coolant temperature sensor tells the engine control module and it determines how rich or lean to make the engine run. You can use a scanner to see if it and all the other sensors are doing the job they are meant to…