2002 lx470 155,000 miles. Recently seem to have developed a gurgle behind the dash after full warm up (heater core I am assuming). Far as I can tell this only happens after I turn off the engine after it has been fully heated though it is possible that it is making the noise when driving but I just can't hear it over the engine. Only noticed recently, but only recently had to use the heater.
Did a coolant "burp" today with funnel and open radiator cap. Coolant is topped off. After the "burp" warm up and shut down there was no noise. In that case I ran the engine about 25 minutes while in park. However after driving down the road tonight and stopping it did it again.
I am sure hoping not head gasket. Will use the tester tomorrow.
Any ideas?
Did a coolant "burp" today with funnel and open radiator cap. Coolant is topped off. After the "burp" warm up and shut down there was no noise. In that case I ran the engine about 25 minutes while in park. However after driving down the road tonight and stopping it did it again.
I am sure hoping not head gasket. Will use the tester tomorrow.
Any ideas?