Hey KitCarlson - thank you - the engine was warm because I started the car to warm up because I needed to turn the car around in the garage - plus it had not been started in about a month since I was upholstering the seats and repair the dash paint at the bottom of the cluster where I had messed that up taking the cluster in & out - this episode was the forth time the cluster has been out of the dash - I just tried it again as the engine is cold now and the gauge is still doing the same thing - hopefully RedFish will respond as I am at a loss as what it could be......you mentioned the instrument regulator...... is that the IVR ?