Genuine Pontiac G6 Water Pump

Pontiac G6 Water Pump Parts Questions & Experts Answers

• Engine Coolant Pump Kit
  12657499
  Q: What are the signs of a failure in the water pump on Pontiac G6?

  A:

  An overheating engine could result due to water pump failure. In such a case, the coolant will leak from the engine front cover or an externally exposed hole next to the shaft seal in case of failure of the shaft seal. Weep or vent holes are provided in water pumps. Using a flashlight, one can check whether there is any leakage on the water pump weep hole(s). If the shaft seal breaks, then there will be coolant leakages through that hole. Use your flashlight and find hole(s) on the water pump that you should check for leaks at. The hole (s) usually exist at either top or bottom of the pump body around its shaft seal area. When running, a whining noise could be heard from a water pump if its bearings have failed on its shaft. Shaft wear can be felt with the engine off if you rock the water pump's pulley up-and-down. Water pump bearing failure should not be mistaken with drivebelt slippage, which makes squealing sound when it occurs. Turning on your heater is a quick way to check your water pump performance. It might not be able to circulate hot water efficiently all the way to core if it is failing or has already failed since hot steam would also not make it there directly.
• Engine Coolant Pump Kit
  12657499
  Q: How to replace a water pump on Pontiac G6?

  A:

  To begin, take off the drive belt and drain the coolant, ensuring any spilled coolant is cleaned. On four-cylinder engines, search for an additional drain plug on the bottom of the water pump. For four-cylinder engines, detach the electrical connector for the ECT sensor and remove it as well as any straps connected to thermostat housing. Take off the outlet hose from the expansion tank and also take out the radiator hose from outlet cover. Remove heat shield for exhaust manifold. Disconnect heater hoses from thermostat housing; pull out housing mounting bolts; then take away water pipe from thermostat housing and replace old O-ring seals with new ones. Loosen lug nuts of right front wheel, raise vehicle, and remove wheel and fender splash shield. Install a special tool to hold the sprocket of water pump; or put a homemade tool to hold it in place, using this tool remove all water pump-to-sprocket bolts: then remove water pump from engine. Clean threads of bolts, threaded holes and sealing surfaces-get rid of all old gasket material and ring sealing in order to clean up space inside water pumps.Install new sealing ring (place it on) and fit in place sprocket together with your water pump. Finally fasten water pump mounting bolts so that you could move on to next step for tightening them sprocket bolts; after this stage you can lubricate seal light by silicone gel before installing rear cover for timing belt, thermostat housing/water pipe.Complete reverse process including reinstallation of drive belt tightening pulley bolts down; refilling cooling system with proper concentration of antifreeze.Reinstalling these components involves reverse procedure including: loosening water pump pulley bolts after removing air duct on V6 engines.Withdraw pulley and also unfasten some mounting bolts that usually secure your water pumps onto engine block.Clean those threads which attach mountings into your engine's threaded holes-first check if replacement pump is suitable, you may then clean surfaces which touch it with lacquer thinner or acetone, and use RTV sealant on new gasket. Assemble gasket with water pump and install it by attaching bolts for mounting water pumps and pulleys respectively.The final step is to fill coolant by following the procedure of filling cooling system until engine gets to normal operating temperature while carefully checking for any possible leakages as well.