changing spark plugs on 1991 Pontiac

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karphil4 - 31 Aug 2005 05:54 GMT

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.

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80 Knight - 31 Aug 2005 08:02 GMT

> 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.

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