Cher

Thank you. The coolant was changed less than a year ago when I needed a new radiator due to a crack in the plastic neck. I can't really afford to go to a dealer and was hoping my dad could fix it.

My 93 ES 300 started overheating yesterday while driving in traffic. It gets hot while idling or driving slow and cools back down almost to normal while cruising at speed. I checked coolant level. It is OK. And no leaks. I checked fan. It is spinning at idle. Could a bad thermostat cause this? I wold think if it was bad, it would also overheat at any speed? Water pump bad? but not leaking at drainhole? Would this cause it to overheat only at slow speeds? Thanks for any suggestions.

The car has almost 90,000 miles. I am not sure if filter has ever been replaced. That sounds like an inexpensive solution if it works. do you know where it is located on my car? Thanks.

Hello, I am new to this forum, but it looks like you guys have a lot of good information here. My '93 ES300 has started bucking rythymically or surging when I put it in gear or try to take off from a stop. It continues until I get up to speed. I searched for information on the idle air valve, which someone told me may be the problem, but it looks like it only controls idle performance. I did notice a smallcrack, or hole in the rubber tube between the air cleaner and the throttle body? Would that cause repeated surging on acceleration? It does not do it when I place the transmission in reverse or back up. Strange. Thanks for any suggestions or help.