I left my 00 RX300 out in the driveway, so my daughter could park inside for the night. It was 23 degrees when I started it, and it stalled. I had to put my foot on the accelerator, and get it up to 2000 rpm's, to start, and then once I backed off the accelerator, it would stall. It took several times, of giving it some gas, and then it stayed running. I just replaced my battery last week. I noticed a couple times I had to start it a second time, but figured I was just putting the car in gear too soon. Could I stop by an Autozone and have them hook it up to see if there is any codes? Thanks.

 

Likely a sticky IACV due to the weather, I have had the same problem here, but do check out the codes.

 

I would say check the battery and connections, then IAC valve.

 

I am rather new to all this, is it hard to replace?

 

The IACV is not easy but not impossible to DIY, I think we have had at least 2 members or so who have done it.