[fenixus]

:thumbsup: good luck

 

[google123]

Well I pulled the plugs back out, gapped them, and popped them back in. Engine still rough and misfiring. Still no check engine light. I installed the old plug wires and it was still the same. I didn't get a change to test those coils but my CEL is back on. Now I'm showing general misfire code as well as misfire in cylinders 1 3 and 5, the back ones, which leads me to believe the coils are indeed weak and barely enough to fire the 3 front cylinders on which they are installed. Will update later. Go to go to work.....

 

[fenixus]

Well I pulled the plugs back out, gapped them, and popped them back in. Engine still rough and misfiring. Still no check engine light. I installed the old plug wires and it was still the same. I didn't get a change to test those coils but my CEL is back on. Now I'm showing general misfire code as well as misfire in cylinders 1 3 and 5, the back ones, which leads me to believe the coils are indeed weak and barely enough to fire the 3 front cylinders on which they are installed. Will update later. Go to go to work.....

ok, it's something.

when random misfire P0300 shows up together with other cylinder specific misfire it means it occurs at same time (random misfire on all those cylinders).
since your misfiring cylinders are all in the rear bank (1,3,5) then I would say ... replace the intake manifold gasket, perhaps it's a vacuum leak affecting all of them?

it's unlikely that all 3 coils are causing trouble (and only to rear bank while front is good, that's suspicious) at same time out of blue moon. but test them regardless. procedure should be described in SFI manual.

 

[TedL]

I note that in the first post, the reported specific misfire codes were for 3,5 and 6.

Now, 1, 3 and 5.

Typo, or new data intended???

The coils are a low failure rate item. To have all 3 of them fail at about the same time? Unlikely.

Look for something they have in common, like the igniter (wiring). You don't bother to give year, so exact equipment is ????

 

[google123]

Yes, before I installed plugs/wires, car ran fine but had CEL light on with the codes I listed earlier in the thread. Now I'm looking at codes 1, 3, and 5. Thats what my code reader is reading. Its a 1996 Camry LE 3.0L 1MZ-FE V6 engine car.

 

[TedL]

Did you double check, and then check again, that you have the cables running between the right pairs of plugs?

 

[Jason.MZW20]

1-3-5
2-4-6

Wire positions:
() = paired cylinder

1(4)-3(6)-5(2)
2(5)-4(1)-6(3)

Those are the correct pairings for the wires.

So, ensure the front coils are driving the correct paired cylinder on the rear bank. Cylinder 2 should go to 5, not cylinder 1, and so on.

 

[LittleWhiteBubble]

The coil is a common problem on the gen 3 5s engine. I'm not sure about this setup. I still vote coil, but since this car has multiple coils, I'm assuming it has some sort of ignition control module that tells which coil when to fire. That could be your culprit. My old 94 ranger had the distributorless ignition system and had dual coils, and the DIS module went bad and caused similar problems to what you're experiencing albeit on a totally different vehicle. It gave no code for it, and I could only trace the problem by process of elimination.

 

[Jason.MZW20]

Well the 97+ 5SFE uses 2 coils with integrated igniters, so it's a little different. The 1MZ uses an external igniter that should be checked as well considering there was a code for the igniter circuit.

 

[LittleWhiteBubble]

Gotcha. So on his there's an individual coil per cylinder? There's no way 3 will go bad at the exact same time. Since you've already tried the plugs and wires, keep tracing backwards. The coils are doubtful, so if they share an ignitor I'd test that. It has to be something they all share, I doubt he'd have 3 independent failures at the same time.

 

[google123]

Jason, you rock man!!!!!

Oh. My. Gawd. I. am. the. worlds. biggest. IDIOT!!!!!!!!

I had the wires wrong all along!!!!!!!!!!!!!!!!!:facepalm::facepalm::facepalm::facepalm:

I had Coil on Cyl 2 running to cylinder 1
Coil on Cyl 4 to cylinder 3 and Coil on cylinder 6 to cylinder 5. :headbang::headbang::headbang::headbang:

I moved them to the way that jason wrote and guess what.....runs smooth as buttah!!! Dammitt im such as idiot. I have no idea where I went wrong. All I can do is say thank you all very much for all your help. I look forward to making another dumbass move that yall can help me get out of. Bwahahahahah.. :headbang:

 

[fenixus]

:thumbsup: all of us make mistakes
glad you sorted it out!

Jason often likes to hit the root cause in the head

 

[google123]

hey on a side note, i did locate the ignition coils for cheap. same number thats on my camry now. $30 bucks each through a dealer on amazon. here is the link.....

[ame]http://www.amazon.com/9091902215-9008019012-Toyota-Ignition-Avalon/dp/B0030WM4WW/ref=sr_1_3?s=automotive&ie=UTF8&qid=1286295049&sr=1-3[/ame]