LC intermittent miss when warmed up

[reduex]

Hi all. I am new to the list and tried to find some answer for my problem but have come up empty handed. I have a '98 LC, auto, gas, 187k mileage.

The other day a coil went out and I replaced it. (#8. Second one to go out. #7 was the first) It was running fine before the coil malfunction. After I replace the coil I started getting a P1320 (#5) and it was running rough. I switched #3 with #5 and replaced the plugs. All properly gaped and torqued. Still go the P1320. I cleaned all coil and injector connections and used dielectric grease. Still have the code. The CEL goes on and off but it still runs rough. I have moved the wiring harness to see if it makes a difference and it doesn't. I am at a loss so any help would be appreciated.

 

[04UZJ100]

Replace the plugs if they are original.

 

[Trunk Monkey]

Generally coil pack codes are the P03xx codes, so while the 1320 is def. the igniter circuit, I'm not sure where you'd chase that one down. Let me ask a buddy that a Toyota tech.

EDIT - are you 100% sure you replaced #5 and you were on the correct side of the motor? Not to insult, but it could be an easy mistake. Also, does #5 have spark?

 

[reduex]

Hi thanks for answering. Yes it did pull the coil pack code but it cleared after I replaced the coil. I have a diagram of the cylinders and I am pretty sure I switched 3 with 5. I replaced 2 coils so I go them right.

I have seen some post about the TPS. Could this cause the issue? I am going to read up today on have to remove and clean the TPS.

Thanks for the help

 

[Trunk Monkey]

My TPS went out last year - truck went into limp mode, either 5mph or WOT, and it threw a different code than you've got.

I would double check your work, make sure the coil pack connections are tight. If you changed the gap on the plugs, I would check that, the Toyota OEM plugs come pre-gapped, no changes necessary.