Still got problems on the NA as originally stated here: http://www.300zx.co.uk/forums/showthread.php?t=153847

 

Not tried the advice given on all connectors as yet as it has been mothballed since posting that.

 

Checked all plugs as refused to start yesterday. Were coked up. Cleaned and fired up fine (though very rough idle around 600rpm and run like crap).

 

Today, i ran a ECU diag and it came up as 55 all clear. Did this 3 times after an hr ECU reset and same result.

 

Then, on each occasion while in Mode 2 i tried the heated o2 sensor monitor.

 

On the left 02 at 2k i just got the EM light on constant so 'open loop' & running rich (lots of black smoke on throttle).

 

On the right O2 at 2k (i think i switched the ECU over correctly) i got no EM light at all.

 

So, is that both sensor gone? Will idle improve if i disconnect both to rule them out?

 

Doesn't rev smoothly either.

 

Took a couple of vids as pretty sure its these against the other options though will obviously be checking the advice given in the first thread tomorrow.

 

Anybody got any more suggestions?

 

http://smg.photobucket.com/albums/v345/Coppen/Zed/?action=view&current=Video000.mp4

http://smg.photobucket.com/albums/v345/Coppen/Zed/?action=view&current=Video001.mp4

http://smg.photobucket.com/albums/v345/Coppen/Zed/?action=view&current=Video002.mp4

http://smg.photobucket.com/albums/v345/Coppen/Zed/?action=view&current=Video003.mp4

Sorted! Wiring was lose.

 

All running now.

Edited February 12, 201213 yr by Coppen

When you say wiring was loose which ones or where abouts on engine as mines doing the same on my tt import and i would love to solve the prob. Checked the maf coil packs and ptu also done ecu check came back 55 so all clear as far as i know. So any advice would be great cheers ...

Mine was the knock sensor wire. It was barely connected.

 

The PTU & TPS both had dirty connectors as well

Cheers mate hadn't checked the knock sensor so ill give that a try ( hopefully that will do it ) thanks..