cant Flush Coolant

[Tomas_St]

My mr2 sucked me . i got overheat issue so re-flush coolant, changed thermostat again re-flush coolant and anyway engine temp jump more as should be. no heating. is it possible problem with water pump?

[Mullen]

Assuming the rad cap and thermostat are sound, you don't have any airlocks and all the fans kick in when they should, the water pump would be the next thing to check.

[Tomas_St]

Assuming the rad cap and thermostat are sound, you don't have any airlocks and all the fans kick in when they should the water pump would be the next thing to check.

i use same strategy to remove air and bolt nearly thermostat . when i fill coolant in system

[Mullen]

Is the feed pipe on the rad getting warm/hot when the thermostat is open?

You can check the rad fans work by unplugging the sensor on the bottom of the rad, [drivers side, easily reached from underneath. no need to remove any panels]

[Tomas_St]

Is the feed pipe on the rad getting warm/hot when the thermostat is open?

You can check the rad fans work by unplugging the sensor on the bottom of the rad, [drivers side, easily reached from underneath. no need to remove any panels]

rad is cold

[Tomas_St]

Is the feed pipe on the rad getting warm/hot when the thermostat is open?

You can check the rad fans work by unplugging the sensor on the bottom of the rad, [drivers side, easily reached from underneath. no need to remove any panels]

i repeat alots time start stop engine till i can hold by temp . rad come hot after 30-45 min

[Mullen]

Sounds like the coolant isn't circulating so yeah, water pump.

Check the belt hasn't snapped or come off, etc.

[ashley]

My mr2 sucked me

It did what now?

[Tomas_St]

Sounds like the coolant isn't circulating so yeah, water pump.

Check the belt hasn't snapped or come off, etc.

ist not the same belts as cambelt ?

[Mullen]

You're right, the water pump is on the timing belt, my mistake.

[bobhatton]

Sounds like the coolant isn't circulating so yeah, water pump.

Check the belt hasn't snapped or come off, etc.

ist not the same belts as cambelt ?

Yes it is

[Tomas_St]

Sounds like the coolant isn't circulating so yeah, water pump.

Check the belt hasn't snapped or come off, etc.

ist not the same belts as cambelt ?

Yes it is

so that`s impossible if it stuck. belt overheat and snap it . my engine still running

[fingers99]

Check jiggler on stat for correct orientation, bleed as per the Big Green Book (and heater full on), get back.

But I'd guess you have a huge air lock.

[takman]

Does the temperature run higher when driving on the motorway/high speed vs. driving around town/low speeds?

These cars use a metal radiator ( not aluminum and plastic like most new cars).....and the small channels inside are prone to clogging from deposits and need cleaning.

Considering its a 22 year old car, could possibly be a clogged up radiator. Just throwing an idea out there.

[MR2 Rich]

Sorry to state the obvious but you have got the heater controller switched to hot, haven't you?