No flame intended....as I also believe most people would not try that stunt. (Hope so anyways) I just dont want them to spray the wires, see nothing and assume the wires are OK.

I am just guessing that if a code has not een thrown it probably a minor leek and won't show up unless the engine is loaded. Wires and Plugs are cheap when compared to coils and hours of looking right past the wires.

If the 'subject' wires are close to 40-50k miles old....I give it a 75% probability that its the wires. If it'* not the wires, they should be changed anyways with that many ticks on them.

Be good,

Freddi

When my Bonne only had 10,000 on it, one of the rear wires was contacting the O2 sensor (grounding out) and exhibited the same jerking under load.

Sorry to take so long to respond back but been working alot.

O.K., tune up done about 3 months ago full tune up too,plugs-ac delco,wires-ac delco,fuel filter,supercharger oil change,new o2 sensors,new bearings new pcv valve.

Miles on it are 120,000.

The reason I had the full tune up done was because of the jerking problem.I have even took the throttle body apart and cleaned everything as good as you can.

So thats why I am asking if you guys think it could be the bad cat causing it????
Or the boost control solenoid or the pressure control solenoid I have had the car scaned and no pending codes or any codes at all,but the jerking is there everytime I am at 50 to 60 mph and going up hills and if the car does not down shift it will jerk everytime I go up a incline.I am going to change out the cat this weekend and I am hoping it is doing this cause it might be pluged alls I know is the cat is puckered and is loud as heck!I will try to also change out the wires again but there brand new and the problem did not get better or worse since changing out the wires or plugs.

I also noticed sometimes after driving around on slow acceleration the car will jerk into gear very hard until I shut it off and restart it up then it shifts just fine thats why I was thinking it could be the pressure control solenoid not working properly but no code so I am baffled!

My friend'* 2000 would jerk as it tried to go into boost, temporarily doing the boost by-pass settled the problem down. Hooked things back up, and it still does it, but not very often. As Bill said, it shouldn't be left that way, as you can do serious damage to your engine if it has to dump boost and can't.

My car was doing a similar stuttering problem, but the boost bypass didn't correct it. Plugs and wires are less than a year old. The wires and coils measured fine. After my recent mods, I took Rogue'* advice and swapped in one range colder plugs - the Autolite 605s. The problem appears to have gone away, but it'* only been a short time. I had used the AC Iridium plugs.

I'm wondering if our cars like the Iridium as little as they like the platinum? If you used the iridium and you decide to try new plugs, you may want to try the Autolite 606s or the NGK plugs and see if that makes a difference.

I thought I would let you guys know that I did undoo the boostbypass.I am really starting to wonder if it is the transmission.

I was on gtp world and a couple of guys said that if my cat is pluged seeing as it is bad anyways that when the boost kicks in and it tries to dumpp boost that if there is no relief that it can cause the motor to loose power under load because there is no where for the extra boost to go.

Just a guessing game for now I guess!!!!

I will make sure to let you guys know after the cat change if the problem goes away and I am going to try new plugs and wires too.

And if no change and it keeps on jerking I am getting a new gto which is at the local dealer what a sweet looking fast as * car!

One obvious question remains, did you replace the coils? I went through a similar experience trying to figure out what was up with my car. It ran perfectly at part throttle and then would only cut out under boost. Reason was a weak coil. It did not have the juice to jump the spark plug gap when the cylinders were under higher pressure. Also, even though you changed the wires and plugs, it is still possible you have a defect - the ceramic on plugs can easily crack if someone at the parts store drops it.

I sure will try and replace the coil packs.I have not checked those yet but what the he ll I mines as well replace those too!

Like I said I am going to replace the cat and the plugs and wires this weekend and I will make sure to let you guys know if the problem is corected!!!

I have to say thank you to you all for all of your help on this is one fricked up problem and this has been baffling me since this problem started I think who ever had this bonnie befroe me got rid of it cause they couldnt figure it out.

But I tell you if after doing all of this and the problem can't be figured out I am going and getting the 2006 gto with the 6.0 and manual trans man oh man what a sweet as * car don't you think????

But the bonnie is paid for and is sweet also but I am sick off the headaches with it!

I might have a spare coil if you want to test it that way without spending money on three new ones. If you are not to far from the border, I might be heading up to Union Grove next week if you wanted to try that.