To specify my problem.
Background: When I bought it (used) the guy said that it had, after an engine compartment wash, "run like a pile of sh**"(limp mode). The day after it ran fine and two days later I bought it, it had been running fine so my guess was water somewhere in the connector and then it had dried up.
It has gone into limp mode a few times for me. I've cleaned the MAF which was extremely dirty and it gave some better performance and got rid of white exhaust when idle etc. But still gone into limp mode.
I think I've identified it to go into limp mode when idling. Usually after a few minutes idling cold, RPMs is around 800 and every 3-4 seconds it goes down to 600 sounding like it needs gas. But has also happened when stopping at a red light for about a minute after driving fine.
There is no SES lights coming on or whatsoever and my mechanic (not a nissan retailer) has not found any error codes with his diagnostics tool. Also when in limp mode, I just need to turn the car off and on again and then it runs fine.
It has also happened (after being in limp mode and restarting) that the engine have stalled when decelerating and going to neutral when coming to a red light.
So it sounds like "classic" throttle-idle-issues.
bpk01: That gives me little help though, my engine is completely different and since I have a diesel engine there are no spark plugs etc. I'll go through the pictures again just to see if there is something I can use
RobG: I guess you have the same engine as me, would you say that the throttle body is located far down on the right side of the engine block?