Problems at WOT FIXED!!

Started by PhatMpk, November 05, 2009, 12:43:39 AM

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PhatMpk

#30
Checked all my ground wires and positive to alt is ok, can any1 please walk me through removing the coil packs and the ICM? There seems to be a pack of wires running right in front of the bottom bolts on the coil packs, cant seem to reach a socket to them

any threads on these?

TGed

With engine cool;  For a first timer, I suggest removing the fans and using a mirror.  See what you are working with.  Three bolts, 13mm.  Unplug the ignition module three plug harnesses.  Then take some take and write down the order on how the plugs are.  You can just do
Coolant Reservoir <- Left "A" "B" "C" "D" "E" "F" Right -> Battery

Once you remove the harnesses, plug boots, and three bolts, the whole assembly will fall off engine.  Take that bottom bolt, screw it back into the block.  Take the bracket over to a grinder and "n" "slot" the hole (aka make it open on the lower most part) .  Take a 5.5mm socket, remove the SIX coil bolts.  The whole assemble is disassembled.  Replace the parts. 

Now the install is easier.  Assemble everything on to the bracket.  Slide the slotted hole of the bracket on to that bolt that is loosely screwed into the block.  Now start in the other two bolts.  Torque them down.  I think 18ft/lbs is the spec, but I usually go by judgment since I work with handtools often.

Install the harnesses, and snap on the plug boots in the order you removed them. 

Start car and go to store for your choice beverage.  Pat your head and rub your stomach simultaneously.
http://www.tgpforums.com/index.php/topic,5214.msg38936.html#new

-Don't go around saying the world owes you a living; the world owes you nothing; it was here first.-

-Assume nothing, question everything.-

Jonpro03

Quote from: TGed on December 13, 2009, 12:36:43 AM
Pat your head and rub your stomach simultaneously.

Impossible

1997 Grand Prix GTP coupe topswap
1990 Turbo Grand Prix Black/Tan Interior 15.05 1/4mile

TGed

I can do it, it's not impossible!
http://www.tgpforums.com/index.php/topic,5214.msg38936.html#new

-Don't go around saying the world owes you a living; the world owes you nothing; it was here first.-

-Assume nothing, question everything.-

GPChief

2004 GTP -  3.8 Blown - Only modding for MPG.
1997 GTP  - 3.8 Blown - Too many mods to list.
1996 GTP - 3.4 DOHC - Twin to my 1997.
1995 SE - soon to be a 3.8 turbo car.
1990 TSTE x 2 white cloth
1990 TSTE x 1 maroon leather
1990 TGP - 5 speed.

PhatMpk

lol it works better if you start rubing first then add the pat ;)

PhatMpk

   
What order do the spark plug wires go on to the coil packs on pontiac grand prix gt V6?
In: Spark Plugs and Wires, Grand Prix SE [Edit categories]

Answer

Looking at the coil-packs directly in front of you, it goes...

1,4 6,3 2,5... (left to right)...

1,3,5,plugs are in the back very close to the firewall.
2,4,6, are the front plugs closest to the radiator and fans.

Don't forget!!! If you are changing the plugs or wires make sure to dis-engage the upper motor mounts (dog bones) and tilt the engine forward .carefully, secure it. Its a whole lot easier to get at the back plugs and wires
It cuts your tune-up time in half.
Good Luck,

Mrkhh.


is this the same order for tgp??

mfewtrail

Yep, that's the correct TGP order.
'93 SE, '90 Black/tan TGP, & '90 Red/tan TGP

PhatMpk

#38
still struggles like in these here
In these 3 videos it shows a little bit better view of how it struggles between 4 and 5k rpms.
http://www.youtube.com/watch?v=4ic32CLLSuU
http://www.youtube.com/watch?v=9wS4PlYfJa4
http://www.youtube.com/watch?v=lV4btmnvb38

seemed to run better with bosch goldplus gapped to .30 would start good, idle, good and would run all the way to fourth gear then would seem to lose power while accelerating at about 50-55

put acdelco plugs in at .45, ran like in the video, hooked my stereo up with capacitor, can symtpoms seemed to disappear, took in on 1 hour trip , the next day ran just like in the video

regapped the acdelco plugs to .30 with no improvement  :icon_confused: :icon_mad:
now starts good idles good, runs good only up to 3,000

killinprixs

sounds like something is restricted OR  doesnt seem like its making very much boost at all,  boost guage looks like 4 psi. engine doesnt seem to run bad its just taking in the boost faster  than its making it. just a thought.

PhatMpk

when I had the bosch gapped .030 car would rev good up to 5-6k boost would read +14, just a lil miss in fourth gear

now if I floor it just downshift knocks really hard and boost doesnt go above +4

killinprixs

OK so you finally have the Delco plugs in, on a stock tune id run the gap a litte smaller than that .038-.040 at least.   Now this might be seem like a stupid question but how old are the plug wires ?   They go bad all the time so if they arent new i would change them, and like GPChief said, if the plugs are wires are new, i would then check the coil packs, i doubt its the ICM because they usually either work or they dont.  Also keep in mind that just because the injectors ohm out , DOES NOT mean they are working right.   

PhatMpk

plug wires were replaced this year with bosch

killinprixs

#43
7mm ?  if so they burn right up, may work for 2-3 months but the misfiring will come back eventually, get like accel 8mm or MSD wires.

also like i said if your positive its not the plugs/wires/coils/sensors/fuel pump/regulator/filter the only thing left is the injectors, seeing how you already replaced 2 others might be bad.  I just replaced a set of injectors that were brand new only put on 2000 miles with them, had bad missfiring and boost problems, all injectors TESTED good but as soon as i changed them, all problems went away and car ran perfectly normal again. Even tho the injectors were new, one prematurely malfunctioned and the car ran like ass. I was chasing everything on that dam car until i had no other choice than to replace them ALL.  Just goes to show when you ohm injectors it doesnt mean that they are physically working. Everythig else checked out like , compression perfect, fuel pressure 40#+, brand new ignition components, all sensors new, swaped ECM/ chips, fuel regulator.

mfewtrail

Quote from: PhatMpk on December 21, 2009, 10:20:50 PM
plug wires were replaced this year with bosch

Pop the hood at night and check your plug wires for arcing. In my experience the Bosch plug wires break down pretty quickly. This might not be the problem in your case...but it wouldn't hurt to check. Those bosch's like to tear apart when removing them to change plugs too. :icon_mrgreen:
'93 SE, '90 Black/tan TGP, & '90 Red/tan TGP