V6 engine misses

[mshearon]

I have a 99 Solara SLE with a V6. Recently the engine starting missing once in a while. I took it to the dealer and they told me it needed plugs and wires for $380.00. I changed the plugs and wires myself (did not remove the plenum) but the hesitation is still there. One time I got an error code that read #6 cylinder missfire. I swapped the ignition coils between 5 and 6 hoping to move the problem hence verifying the problem. The engine stilll misses but I haven't seen another error code. Can anyone tell me what the problem most likely is? I'm leaning towards a faulty injector. I measured the injector resistance an all 3 injectors across the front and got 17 ohms each. I've also cleaned and inspected the throttle body and all the vacuum lines I can find. Thanks in advance.

[SleeperSolara]

It somethin' wit the spark plug wire to the #6 cylinder.

[ClassySolaraGuy]

I'm not sure if the V6 has a cap/rotor but my Jeep had the same problem. My cap was loose and the rotor inside was cracked.
Fuel injectors could be the problem like you said too!

[Turbosolara]

I thought you v6 guys had direct ignition? (distributorless ignition). I think your coil pack is bad, if you replaced your wires and spark plugs correctly. what kind spark plug did you put it in, you sure it has right gap?

[SC V6]

yeah... no distributor.. make sure all the connections to the front coil packs are connected and bolted to the valve cover

[StockSolara]

If everything is right you most likely will need some new coil packs. . . contact Greg *Paladin06Greg* I remember he was selling some brand new OEM ones

[Monkeyman]

Make sure the ground for the existing coil pack is good. It may look "ok" but clean it up anyways. A bad ground can cause intermittent problems. It is not likley the cause, but better to check it then spend money on a new coil only to find that it was the ground all along. The ground spot should be clean and without corosion.

Hope this helps.

[mshearon]

Thanks for all the help...the problem ended up being an ignition coil pack sparking to ground. I ended up having the dealer fix it. It cost $93 for the coil pack and $98.00 to do the work (1 bolt and 2 connectors). I felt I should have gotten a kiss, but am glad my car runs great again.

[drock03]

Where are the coil packs located and are there 3 or 6 of them???

[StockSolara]

Where are the coil packs located and are there 3 or 6 of them???

It's the three rectangular looking things in the front of the engine

[drock03]

Bolted over the plugs?

[mshearon]

Yes they connect to one plug directly and have a plug wire that goes around to the firewall side of the engine.

[drock03]

Thanks, that's what I thought

[Fratsgotasolara]

its like 70 a coil