TPS was reading 0.44 so I adjusted it to 0.46 (I believe thats correct from what I read).

 

Screenies now, first is from cold start, second from when its looks like its up to temp but is still on fast idle, and third once idle had settled, anything on there look amiss ?

 

 

 

Anyone ??

these two any good to you.... should have the correct readings, you'll have to read though a bit:

 

http://www.300zx.co.uk/forums/showthread.php?t=145129&referrerid=16305

&

http://www.300zx.co.uk/forums/showthread.php?t=143856&referrerid=16305

If I read that right, I need to reach 80c before checking the AAC that should read 15 ?

( I would have thought 20 mins idle would have reached temp, but maybe not ?).

Then I can adjust if needed using this method ? : http://www.nicoclub.com/archives/adjust-your-idles-rpm-level.html

 

Do all the electrical plugs have some sort of built in plastic clip retainer, or do they just prise off ?

Edited April 18, 201114 yr by Bartflaster

Closed throttle switch shows off on the first two sets of dials but on ( as its should be ) on the last one.

 

The second set of dials show a high ignition timing of 26 deg at 70C this should be 15deg

the most likely cause of this is a faulty hard idle switch or even a bad connection on the same, this is the plug that is directly connected into the tps.

 

A/f base appears low ( rich ) this could be because the ecu has been chipped though.

 

AAC at 70C is high but lowers as the temp has risen a couple of deg so if you could attain 80C it may well drop further, chances is the thermostat is jammed open or the viscous fan is locked and spinning faster than it needs to and overcooling, try holding the fan blade ( wear gloves) see if the temp rises to 80C see what the AAC is doing then, if after letting the fan goes the blade spins very fast the viscous is the issue if it just idles but the temp drops it will be the thermostat ( most likely)

 

Jeff TT

Edited April 18, 201114 yr by JeffTT

Wouldn't fancy holding the fan blades!:death:

Thanks for the input :)

 

The first 2 were taken after I had adjusted the tps sensor, but not restarted the car.

The third was ign off, tighten tps screws and restarted.

Not sure if that will have a bearing on anything ?

 

AFAIK the ECU is bog stock jspec, it still has he speed limiter on.

 

Fan I can check, but I do hear it spinning up if engine is revved while stationary.

 

I can also check the hard idle connection on the tps, does it just prise off or is there a locking tab ?

Ok connectors looked reasonable, but now cleaned with contact cleaner to be sure.

 

I will hook up the laptop after the next run so I know the cars up to full temp and see if the aac is sat at 15 and temp is 80, if not, I should adjust the IACV screw to obtain a reading of 15 ?

 

What should the A/F base read ? I presume the only way this is altered is within the ECU ?

 

Once all readings are correct, should I reset the learning or leave alone ?

Edited April 19, 201114 yr by Bartflaster