need to know how to change the three plugs at the fire wall. also need info. on heating system. Car runs good on first start and surges and engine light comes on and after it warms up and also heats up when idling or driving slow aroung town. fans do not kick in unless heater is turned on or ac is turned on. then fans will begin to run.
Pontiac made many car's back in 1991 my friend. My '91 Grand Prix had the
3.1L V6 and it's plugs were very hard to get at. I ended up unbolting the two dog-bones (engine mounts) at the front, pulling the engine forward and rebolting the bones to hold the engine in place while I did the plugs at the back.MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.