i know


but everything leads to shorted or open wires. continuity tests will only tell you its open or not but wont show shorts. theres only one thing to do pull the ignition harness and rewire it. seems like ghostdakota is avoiding it at all costs.

Yep, I'm completely broke right now between both Trans Ams and my Jeep being down. No money for a harness, no time to do it, and nowhere warm to really do it either. I get hit or miss garage use time at work when it's not being used.

http://www.examiner.com/article/usin...appy-customers

He used a good example in there. Its like taking a test and passing with a 71 or failing with a 69. Mode 6 tells you by how much you are setting or not setting a code. I think what you posted seems to be for o2's but I am really uncertain. Hell it could be for the rear o2's and it could all be failing because its tuned out. Its not my forte, its just my thoughts.

i know but youre dancing around the problem hoping it'll fix itself. when you tried the lq4 coils did you swap just the coils or the bracket with the coils on it?

I have a harness you can troubleshoot with but it's a 99

will work if he uses his ecu out of his 99 i think i guess

I have a '98 and '01.

99-02 is same
98 is different.

Quick question. PCM wiring harness. What color is the ground wire in the harness for the PCM? Seems it's white on LT1's... Black/white - ground jumper (I have a pdf but cannot attach it due to size limitations on attachments)? I want to get at it and reroute it. There is no way I'm getting to the back of the head anytime soon. I'm 6'4", 215 and my arms don't really fit. I don't have lift access anytime soon either. Closest garage I have access to is 25 miles away.

borrow the harness and comp. just hook up ignition fuel and maf the battery and some grounds. start it up and see if it misfires
will take you less than 30 in your driveway

I would if I could. I'm west of Philly and my only working vehicle is my motorcycle.

EFI Live & my Trans Am will be meeting tonight...

Took it to a fellow LS1 owner. He hooked it up to his EFI Live. He stated: "I hooked up HPtuners and monitored current misfires and #5 and #7 are misfiring badly. It sounds like to me he's either got a broken valve spring, or two, or a bent valve. I told him to get the driver's side valve cover off asap and see what's up before he does anything else. "

you havent removed the valvecovers yet?
bent valve? thought compression test was good.

ghostdakota bring it to me. ill diagnose it. + i have the harness from my 98 laying in the garage.

Compression was good. I did a 4 puff test which GM suggested. I was unable to see the gauge until I stopped the test. A GM tech on another forum said he has seen this twice in the past. One was a bad PCM to ground wire. The other was a bent/broken valve spring. Compression can still be good with a bent/broken valve spring per what he said. It is just something I would notice on the 1st puff, not after 4. Of course he tells me that now.

I appreciate the offer! Harrison is approx. 2 hours+ away from me. My zip is 19380. That's a long drive in this car with the way it is currently running.

pull the covers start the car and use your orbital scan tool to diagnose.

Okay, photos of the valve springs:
http://pafirefighter11.smugmug.com/A...MAG0156-XL.jpg

7:
http://pafirefighter11.smugmug.com/A...MAG0158-XL.jpg

http://pafirefighter11.smugmug.com/A...MAG0163-XL.jpg

5:
http://pafirefighter11.smugmug.com/A...MAG0164-XL.jpg

3:
http://pafirefighter11.smugmug.com/A...MAG0165-XL.jpg

1:
http://pafirefighter11.smugmug.com/A...MAG0166-XL.jpg

Valve cover:
http://pafirefighter11.smugmug.com/A...MAG0167-XL.jpg

do any feel loose? just curious if it ever spit out the needle bearings from the rockers. from the pics cant really see anything wrong, how about the other side? might as well check the pushrods while your in there, thats fast and easy.

I did this earlier, after work. I only have very limited garage time. Had to pop the cover, check it, and pop it back on. Everything seemed pretty tight. Didn't get a chance to get to the passenger side, but the driver side is the issue.

yea i forgot 5&7. let me ask you this. i know its stupid but are the locking pins on the pigtail that powers the injector. i just had a miss that would come and go on my dd. moved coils arounds, checked plugs and nothing. finally after staring at it for awhile going wtf. i noticed all the clips on the injectors were missing from the previous owner so the pigtail jump around causing my miss.

They are! Not an odd question either. I noticed when I plugged the coils back in that the clips held the plug better than without, so I made sure all 4 were are in use.

damn, running out of ideas haha. sticky injector maybe? ill have to think some more on this one.

I swapped the injectors a couple times. I added 2 injectors from a '98 Camaro SS into the 5 & 7 locations. Didn't do anything. I swapped the 5 tonight to the 1 and nothing changed. It's still on 5 & 7.

so you still dont know wither its fuel or spark? maybe try a injector test noid or start pulling the wire loom off to look for broken or chewed wires.