Question about 1999 Pontiac Grand Prix

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2006 grand prix 3.8 supercharged

I had a miss took into auto shop and they dicovered that i had two cracked spark plugs, wierd but whatever. replaced plugs and now they have cracked again only 5 weeks. Has anyone come across this problem or can anyone come up with an answer?

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You need to upgrade to some performance wires that can withstand higher tempreatures or invest in having your wires wrapped with some cooling tape which you can find at a performance shop

Posted on Sep 24, 2009

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Posted on Jan 02, 2017

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GM 3.8 liter supercharge v6 firing order 2000 pontiac grand prix spark plug wire order


For the 2000 Pontiac Grand Prix:
I do not know if you have the 3.1L V6 or the 3.8L (including Super Charger) V6; however I have included both below...

For the 3.1L V6:
Firing Order:
1-2-3-4-5-6
Cylinders:
......(back).......
'...1....3....5...'
____________
'...2....4....6...'
.......(front)
Ignition Coil Connections:
.'.5..2.'..'.3..6.'..'.4..1.'


For the 3.8L V6 including the Super Charger:
Firing Order:
1-6-5-4-3-2
Cylinders:
.....(back).......
'...2....4....6...'
____________
'...1....3....5...'
......(front)
Ignition Coil Connections:
(back)
o 6
o ---3
___
o 2
o ---5
___
o 4
o ---1
(front)

Let me know if this helped, or if you have additional information or questions. Feel Free to contact us at FixYa.com!

Oct 08, 2010 | 2000 Pontiac Grand Prix

1 Answer

2000 Grand Prix GTP supercharger fluctuates when accelerating


There is no wastegate.

Change the spark plugs and pay special attention to the plug on bank 3. Look for physical damage on the electrode...cracked, bent etc.
Use Autolite 605's copper core gapped to .055" and NEVER run less than 92 octane.

Apr 02, 2010 | 2000 Pontiac Grand Prix

1 Answer

Water pump replacement for 2006 grand prix gt supercharged v6


first take the 4 bolts that hold the water pump pulley out, do this while the belt still on, it's easier because the pulley won't turn on you.
remove the pulley then take the 8 bolts around the water pump then pry the pump out.

Feb 26, 2010 | 2006 Pontiac Grand Prix

1 Answer

2006 pontiac grand prix 3.8 supercharged, check


you probably have a problem in the evap emissions system and a superficial engine diagnostic @ a shop will likely confirm this. a loose gas cap is the most common cause for this, so it tells you to check it first in an attempt to save you a trip to the shop. if the cap is new and tightened past 3 clicks, then the problem lies somewhere else in that system. there are many parts in that system, so it probably would be best left to a shop to figure out exactly what the cause is.

Oct 01, 2009 | 2006 Pontiac Grand Prix

4 Answers

Supercharger oil leak


There is seal kits.available for the.m 90 supercharger on the 3800 go to zzperformance.com youl find an eye.full off aftermarket and hard to find parts for the gtp.

Jul 16, 2009 | 1999 Pontiac Grand Prix

1 Answer

Cracked flywheel


you tuned a bering in the motor use a piece of wood 2by 4..place over each cylnder with you ear to th wood wood to the cyl. you will hear it loud in one cyl..that ones bad replace motor

Jul 13, 2009 | 2006 Pontiac Grand Prix

1 Answer

Major loss of power to my 1997 pontiac grand prix gtp


There are to many things that can case your car the lose of power. Best thing to do is get the ECM scanned at Auto Zone for free, If there is no Auto Zone there most larger auto parts store can also scan the ECM and most garage now will scan for around $10.00 to $15.00.
You may want to change the Fuel Filter, a dirty fuel filter will restrict the fuel flow to the injectors making the engine run lean during boost causing miss fires and will burn up your spark plugs and worst the valves. If you do change the plugs, DO NOT REPLACE THEM WITH Platinum Plugs use a good set of copper plugs. the platnum's will heat up and glow causing detonation.
Good luck and hope this helps. keep me posted on how you do.

May 24, 2009 | 1997 Pontiac Grand Prix

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