hmm, first generation injection system I guess then :idontknow:

After the sensorTbh, I don‘t know what leads you to that conclusion? The air/fuel ratio is basically calculated with the data from the afs, engine temperature and throttle body position etc... An o2 sensor is not really needed for that. Afaik the o2 sensor is only needed to fine tune the...

I have the ECU wiring diagram. It's in german so I tried to translate it as good as I could (too big to upload here. Click on image for full-screen) https://killkenny.spdns.org/nextcloud/index.php/s/P8m7HrEnA3aPdDKThe O2 sensor has a double dotted line which indicates it's only for cars with a...

Well, there was a cat and a non-cat version of the car. The cat version has an o2 sensor in the exhaust manifold but the non-cat version has none. Which should also not be a problem as long as everything is okay with the engine.Anyway, I think I have to invest in a scope now so I can see...

Hmm, I'm not sure if you or I misunderstood, but it's not like the car is missing the o2 sensor, but it's not supposed to have one. It doesn't have a catalytic converter. And I already did a smoke leak test as I said.

The thing is, the car has no o2 sensor because it has no cat, so I don't see how the ECU could try to (over)compensate a lean mixture and then run rich. The only place I couldn't really see during the smoke test was the underside of the intake manifold to cylinder head seal, so I changed it...

But should a vacuum leak not lead to a leaner mixture? I did a smoke test already, only found a small leak at the throttle body shaft which I sealed up. Nothing however that could have caused the issues in my opinion.When exactly it started is hard to say because it's a restoration project and...

Hi dsm tuners, a Mitsubishi companion here that needs your help. I thought I would write here on this forum because I think here are the most people with knowledge of these older Mitsu engines, and because I am totally lost here. First of, I don't have an Eclipse, but a Mitsubishi Sapporo...