Hi DZFORD,
So new breather hose fitted and
PCV valve cleaned.
Disconnected battery for 15 minutes and then started car and left to get warm. (Had to hold throttle to get it to idle)
Went through a relearn on the throttle body by disconnecting the battery again and shorting the battery cables together. Left it again for another 15 minutes.
Started the car and again would barely idle.
Went for a 18k drive in various conditions but no still would not learn.
Disconnected the 3 amp fuse for the
PCM and left it for another 15 minutes and try again by, switching the ignition on and for minute and then off for 5 seconds. Still no good.
By this point I decided before shooting the
PCM as a problem, let's put the original throttle body on and try again.
3 amp fuse removed for 15 minutes and then ignition on for minute and then off for 5 seconds.
Started car and it idled but not as expected. Increased rpm to approx 1500-2000 for approx 20-30 seconds and gently let the throttle go and the car idled as it should. (Excited at this point.)
Blip throttle and it was doing as it should.
Revved it again a few times and sure enough it was sweet.
Took car for approx a 10k drive and she was beauty.
What a headache this was but all sorted now and speedo worked all good.
Thanks for your input on this concern as there is so much confusion around this problem on these.
Have a great weekend
Will try and attach a screen shot of the final readings from the Forscan.