i took the iac on the plenum off as i had spoken to a few people who said u don't need it with a standard ecu. i was told it was an idle up sensor for when the air con compressor comes on ans since no air con , no need for the sensor. I WAS TRYING TO TIDY THE ENGINE BAY UP A BIT. its not that it idles slow when cold its like it doesn;t get enough fuel..... just like a cold carby motor, and u have to puLL the choke out for it to run right when cold.. it has always done it and not changed since taking the sensor off so now i'm confused.....AND ONCE ITS WARM IT RUNS FINE :(:(:(:(:(:(:(:(:(:((:((:(:(:(:(:

!!UPDATE!!!
I bought the ute off of bugsie. It still had a cold start idle problem. I did the diagnostic mode on the ecu and code 13 came up which is engine temp sensor. What should I do replace it or can you test it?????!

you can test it.
Im pretty sure it is a simple analogue sensor so connecting a multimeter across the two terminals should indicate a resistance, now put the tip of the sensor in hot/boiling water and the resistance should change.
From the manual 60Deg C should have 70-90Ohms resistance. 100Deg C should have 21-24Ohms.
These are pretty cheap to replace anyway.
Coolent temp is a major factor in compensation for cold idle (warm up idle) most ECUs have a compensation table for coolent temp.
But ultimatly, as indicated a couple of years ago, if you remove all the other idle up gear, you won't get a good idle with this engine, you can increase the idle speed but it won't be as good as when all the gear is connected.

Bryan