mtnwater

'91 EJ22 installed in my vanagon has been running code free for more than a year. CEL came on the other day - flashing 22. Finding the knock sensor cracked, I picked up and installed a new one, thinking this was a pretty straight-forward issue. Unplugged the ECU overnight to clear codes, hooked everything back up and......still flashing 22. What's up? Do I need to do something else to completely purge the code from my ECU, or is there still come issue with the Knock Sensor or it's circuit? The wiring seems fine, connection between the harness and the sensor seems solid. What am I missing? Just did some additional searching an noted that exposed wire could cause the code - the plastic part of the male side of my plug seems to be missing and the connector is a bit exposed - maybe this is my problem? Considering clipping the plug on both ends and replacing with a simple paddle connector? Thanks much in advance for your thoughts!

Cool - I'm going to go to the local dealer and ask real nice - hoping they can hook up my motor to their scan tool.

Yes..the wiring harness, electronics, and ECU came with the motor and I do have the select monitor connector. Just haven't had the time or motivation to put together the scan tool. Assuming I can get it together, what would I be looking for?

It could be coming from the intake - but it seems more motor related. Power seems comparable to other converted vans, no complaints on power. It almost sounds like a cylinder isn't firing. Rough at all rpms, but most noticeable at 1200-2000. Almost sounds like an old subaru with lots of miles on it - not the smooth, even purr I would expect from a fresh motor. I poked around last night and confirmed all four cylinders are firing, no vacuum leaks that I could find, pcv valve is clean. Swapping plug wires with a friend is my next step, but the NGK wires that I have are new and seem to be seating well? Thanks for your thoughts.

I have a '91 EJ 22 installed in a VW vanagon. The motor was rebuilt by the shop that did the conversion and has ~8k miles on it. It starts easily, idle is consistent, and it pulls strong. My issue is it seems to have a noticeable growl to it, particularly at lower revs - not the smooth sewing machine hum I am used to. I have seen and driven other EJ22 converted vans, and they just seem to be smoother over all rpms, w/out the strong growl that my van has. So my question is - what could be causing this roughness? O2 sensor was new with the motor, not sure about crank and cam angle sensors. IAC is clean and smooth. Plug wires are NGK - I've read a few posts suggesting this could cause roughness? Any other suggestions would be greatly appreciated. The motor, in general, is fantastic, I just want to make sure it's living up to it's smooth potential. TIA