Trouble with idle speed

[JonAE86]

Ivan141 Wrote:I dont know any thermostat that will raise the temps, but you can use pretty much any corolla thermostat for 4A engines, they're all the same.
How far do your temperatures drop? On my car the coolant got cold while driving on the highway, and my heater also had zero effect. That was due to a broken thermostat. But you should notice the meter going down to around 1/4 of the scale and lower if that's the case.

I think the thermo must be broken the. When driving it is around 1/4. Should bé around 1/3 or even 1/2. Lastnight just left the car sitting outside running for a while. It slowly droped the idle speed to just under 1000rpm, but very slowly, and got warmer too i think. I really think it must be the thermostat, cant imagen of any other thing that might cause this in that exact order.

[Ivan141]

Yep...the symptoms are clear....It's an easy fix. Dont forget to buy a new gasket for the housing while your at it.