injector issue

Hey all, I’m trying to track down a rich-running issue on my 1995 Land Cruiser with the 1FZ-FE, around 248k miles. The original code I had was P0170. I replaced the upstream O2 sensor with a Bosch sensor, but after swapping the connector I ended up with a P0135 heater circuit code. I’ve got a...

If you look at the threads I’ve posted before you’ll see I’ve had some help from the community with a harness I was putting into a 40 series. Now I’m on to bigger things, currently I have a 1FZ-FE coil pack version of course in a 60 series which I have cranking and one injection firing on. My...

Hi all - hoping to get some input This is on an 06 (i.e. VVTI). Prior to the following work, I did not have this issue at all. I recently took the intake mani/plenum off to repair the knock sensor harness. While the intake manifold was off, I figured I would have the injectors serviced by a...