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Old 02-16-2008, 02:04 PM   #1
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Default sparkplug location/access

Can someone tell me the best way to access the sparkplugs on a 2001 Pontiac Bonneville?

Thanks,

Melanie
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Old 02-16-2008, 02:12 PM   #2
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just follow the plug wires to the engine, pull them off and the plugs are underneath. the front 3 are easy, the back is a little harder, but not too bad on our engine.

If you're replacing them, most around here would recommend NGK TR55'*
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Old 02-16-2008, 08:40 PM   #3
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Remove the engine cover, and some find it easier to reach the back plugs by also removing the rear bracket to gain a little more room. Things are a bit tighter back there for the 2000+ than the previous generation. You may be able to reach some from above if you climb part way into the engine compartment. Otherwise, try from the passenger side, and run your arm under the heater hoses. Unless your arms are covered, expect to get some scratches.

If the plugs have never been replaced, the wires are likely to fight you. If they also have never been replaced, may as pick up a set, as you might damage the rear wires trying to get them off. Push the metal covers down as far as you can to get tem out of the way, and twist the boot while pulling.
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Old 02-16-2008, 09:35 PM   #4
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Wearing a good pair of leather of mechanics gloves will really help. When your install the new plugs make sure you lube the cable boots with di-electric grease.
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Old 02-17-2008, 12:02 PM   #5
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front three are easy, right along the front of the engine, (remove the cover by taking off the oil neck), the back three are trickier, but you can get at them without taking off the engine mount, having small hands helps.


P.*. MAKE SURE THE ENGINE IS COLD!!!!
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Old 02-17-2008, 03:46 PM   #6
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Thank you very much for all your responses. I'm about to go for it right now. Im hoping that changing the plugs and switching my TPS will make my slippage /"fish bite" sensation problem go away. (Crossing my fingers on that one.)
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Old 02-17-2008, 03:54 PM   #7
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Quote:
Originally Posted by mell4now
Thank you very much for all your responses. I'm about to go for it right now. Im hoping that changing the plugs and switching my TPS will make my slippage /"fish bite" sensation problem go away. (Crossing my fingers on that one.)
Can you explain more on that??? What exactly happens, when does it happen?
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Old 02-17-2008, 11:57 PM   #8
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The "problem" that I have is mainly when I accelerate to pass another car, or when going up a hill the car bucks, almost like it'* trying to downshift but doesn't . In order to shift I must either mash the gas pedal, or let off and try again. The problem is between 1200-2000 rpm in any gear.
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Old 02-18-2008, 12:01 AM   #9
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Ok. For a second there I was wondering if your front trans mount was going out, but that will only buck one time, each time you hit the throttle, not mulitple times in a row.
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Old 02-18-2008, 04:47 PM   #10
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after about 8 hours, 6 bruises, 3 broken wires, vice grips, a cut finger, hammer, crow bar and a lost socket, we were finally able to get the rear plugs off. As of about 50 miles the "fish bite/slipping sensation is no longer present. there was a significant amount of carbon on cylender # 2 at the coil pack which we wiped off. we put a generous amount of dielectric grease on all the connecter terminals. The car is running pretty good for now. We did have to ditch the rear plugs heat shields though cause they got destroyed!
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