What's wrong with it?

Apart from the badge on the grill!

96 3.5L DOHC Pajero on gas.

Broke down this morning. Pulled over. Engine stalled. Converter had iced up. Thought either too much gas or not enough water. More likely not enough water, as gas system was serviced a month ago. Lots of bubbling and gurgling in the overflow bottle. Got the cap off, took hardly any coolant. Temp gauge was normal. Put cap back on, and tried to start and drive again. Started, but drove badly, like starving for fuel. Pulled over. Called RACV guy. He noticed the pressure as he took the cap off, and said blown head gasket. Also noted lots of gurgling in overflow bottle again. Switched to petrol, and ran engine with cap off. No bubbles or tell tale signs of blown head gasket. Poured water over converter to de-ice it. Switched back to gas. Started fine, and idled well again. Suggested thermostat not opening properly. Drove home to switch cars, which was not more than about 4 or 5 km. Fecking thing iced up again in that distance. Got it home carefully. My normal mechanic says he thinks it's more than just a dodgy thermostat. I hope he's full of shit. He says it MUST have air pockets, but what I can't understand is why it took next to no coolant. I've bought a replacement thermostat, which I'll replace tonight anyway, but was looking for advice on what others may think. Water pump was done when the timing belt was done about 40,000km ago, so it shouldn't be that. Thanks, Crash Lander

Reply to
Crash Lander
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If the car is running at normal temperature, then the thermostat is not the problem.

The evaporator (not converter) will (should) be plumbed in to the heater circuit, which will receive a flow of water whether or not the thermostat is open. Check the water pipes, see if they are warm where they enter the evaporator.

Is the heater blowing warm air?

Reply to
SimonJ

Reply to
Crash Lander

Air is getting into the coolant system and because the vapouriser is getting no warm water it freezes up.

First thing to do.

  1. Remove the thermostate and fill the coolant system.
  2. Run the car on petrol.
  3. If the car runs ok and doesn't overheat and doesn't loose water the thermostate is at fault. If the car overheats or loses water you have a blown heat gasket.

As a quick fix if you think you have a head gasket loosen all the head bolts in proper order and then retighten. Worth a try. Otherwise it is head off and a new gasket. If the head doesn't want skimming that is.

Crash Lander wrote:

Reply to
david.cawkwell

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