Question about 1994 Lexus Es 300

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Thermostat repair on lexus e300....replaced radiator ,new hoses and after driving 10-15 miles it overheats

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Bad water pump

Posted on Mar 04, 2011

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1993 Ford Econoline Van E150 is overheating and I'm not sure what the problem is to fix it?


If the radiator is 15 years old, replace it

The newer radiators are much better than years ago

Install a new thermostat,rad hoses,heater hose

Also new spark plugs, if over 3 years old & front O2
Sensors, if over 100,000 miles.

The Exhaust Converter, if over 15 years old

It all adds up to cause your overheating

Use Synthetic Oil in the engine

Change Power Steering & Trans Fluids

Hose down the A/C Condenser when the radiator is out

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REPLACE THERMOSTAT-1999 LEXUS GS 300


Just follow the upper radiator to the engine, the thermostat is under the cover that the upper radiator hose attaches to on the engine. Make sure to bleed the air out of the system after draining it to replace T Stat or the engine will overheat and damage a head gasket..

Aug 28, 2012 | 1999 Lexus Gs 300

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1994 Lexus ES300 overheats after a few miles and water pours out of the radiator coolant reserve tank. Radiator rebuilt 6 months ago. New radiator hoses and other water hoses within last year. Please...


a cracked block or bad gasket can result in compression bleeding into your cooling jacket causing the symptom you describe. a good shop has a tester to determine if there is compression residue in your coolant. that would be a place to start.

Jul 06, 2011 | 1994 Lexus Es 300

2 Answers

It overheats after 20 or 30 miles of driving. Is this a head gasket issue or radiator system leak ?


if it was a head gasket it would overheat long before 20-30 miles if there is no sign of water leaking from hoses etc when the car has warmed up it is most probably the radiator or possibly the water pump or thermostat has called it a day

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My 1992 Lexus ES300 overheats after driving it a short distance (4 miles). Checked radiator, hoses, all looks good and no leaks. Please tell me what else could cause the engine to overheat.


If you see no leaks and the fluid level is also good in the rad overflow bottle. It could be the water pump. When the car is running do you feel the hoses are hot and pressurized. Do you feel heat with your heater cranked up. The coolant may not be circulating. This would mean you need a new water pump, most likely the impeller is worn/broken inside. It can be fixed by yourself but will require some skill and time.

Mar 18, 2010 | 1992 Lexus Es 300

1 Answer

My 2002 Kia Sportage overheats. I have replaced the Thermostat, sensors, fan and fan clutch assy., hoses and radiator and it still overheats in stop and go traffic. The fan appears to be working. If I...


Unfortunately, I refer to repairs of this type as "search and repair missions"...You've overlooked the radiator core...the only thing left and probably the culprit. ($180)
Good Luck

Jun 25, 2009 | 2002 Kia Sportage

1 Answer

Overheating 2001 pontiac aztek


remove coolant.remove thermostat remove bottom radiator hose to water pump.put a empty container under the radiator.take a water hose put it where thermostat goes flush out the rust in block.watch the water as it come out the water pump .if stream water is small keep flushing until you get a study sream of clear water. also flush out radiator. lower water pressure dont flush radiator it with high water pressure you could burst it. make clean the over flow jug .make sure it not stopped up.put in a new thermostat and radiator pressure cap. fill radiator with half antifreeze and half water.bleed the coolant system.

Apr 05, 2009 | 2001 Pontiac Aztek

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