hurricanejosh

Car is a 1999 TL with 277k km
Codes 0300-0306 & 1399

Issues started last year with one failed coil and a EGR port recall kit.

Since I've been replaced the plugs (NGK Iridium) and the remainder of the coils as they've dropped off on at a time.

I'm still getting the misfire codes, last time I reset the ECU it was 3 days of driving before I got one though.

I've tested the new coils with a multimeter, 2 from the dealership are 16000 ohms but the other 4 I ordered online and are 10000. Is that within spec?

If that's not the problem, what's my next step?

fsttyms1

Have you done a compression test. Other things would be bad injectors

hurricanejosh

compression test came back quite consistent 170psi wet & dry on all cylinders

3.2TLc

Hey Hurricanejosh, the '99 TL's had lot's of EGR passageway problems with clogging up. Try going back in and ensure that everything is clean.
Check with the DIY sticky for more details. Also may want to consider a quality fuel system cleaner. Inspect all the wiring and vacuum connections.

hurricanejosh

thanks for the tips. the EGR was done a year and 15000km ago. would it really be clogged up again already?