Pontiac Grand Prix Overheating- Head Gasket Replaced

• Comments ⇓

2004 Pontiac Grand Prix 6 cyl 3800.Question = I need to know how to change the spark plugs. I took the wires off and only the bottom of the plug showed. Do I need to take the cylinder off?

Answer:
If you mean that the spark plugs broke, and all that remains is the lower portion, then no you do not need to remove the cylinder heads. You will still be able to get a socket on the plugs, as the lower portion has the fitting for a socket. See this link for a pic of a spark plug.

Pontiac Grand Prix overheating. Question: My car started running hot about three weeks ago. Heater would work on and off. Checked water and had oil in it. Replaced intake and head gaskets. Flushed Radiator. Ran fine for day or two. Started running hot again. Heat did not work at all. Changed thermostat. It was stuck. Flushed again. No change, still running hot.

Replaced water pump. No change. No oil in water, heat still not working even after new thermostat. Can idle for a while but when accelerated or tr to drive it instantly begins to run hot. Not sure what else to do. Any advice would be greatly appreciated. Thanks

Answer:
You've covered just about all the bases there, and with most of the parts that have been replaced, there can only be a couple things left that are causing your problem. Depending on how hot the car got, you could have warped or even cracked the cylinder heads. Just replacing the head gaskets wouldn't fix the problem, and this would lead to an additional overheating problem.