Hello. I have a 2000 DB52T that is having some weird idle issues. If I start it cold it starts right up. If I give it any gas such as backing out of a parking spot it dies. It will idle fine after it warms up. The second idle issue I am having is after it is warmed up. It randomly starts surging from 1,500 to 2,500. Nothing is putting a load in the alternator so I am not sure why it does this. Once it starts surging the only way to get it to stop is to turn the ignition off and then back on. This will only stop it temporarily. If I unplug the IAC it idles fine when warm. It just won't idle with the AC on. I have replaced the IAC, TPS and MAP sensor. I have cleaned and replaced all the gaskets in the throttle body. Also when I bought the truck the ECU was bad. I bought a used ECU and when I plug my code reader into it the ECU says its from a Suzuki Every. I am not sure if that would be it or not. Any help would be greatly appreciated.
