Thread: 2.4l puma enigne overheat problem

Originally Posted by labrado

Yesterday while I was cruising on M11, the engine went into limp mode. I pulled over and found the the coolant was spouted all over the engine bay thru the expansion reservoir cap. Waited for the the engine to cool down, topped up with 0.5l coolant and 1.5l water, put a new cap on, I managed to drive home slowly with a obd scanner plugged in. On my way home no DTC found and temperature varied between 88~96 degree Celsius.

This morning I drove the puma to work and it worked fine along M1. Max speed was 100km/h and temp never exceeded 96 degree Celsius.

Tonight I decided to take the puma for another spin, and the temp went over 100 degree after I up-shift to the 6th gear and stayed on 100 km/h for a few seconds. The obd scanner raised a warning however no dashboard warning light, no DTC and not into limp mode. Pulled over and found some coolant spouted but the coolant level was ok. Let the engine cool down to abt 70 degree and started driving. Again, the temp went over 100 degree after I stayed on 6th and 100km/h. Again obd scanner raised a warning but no dashboard warning light, no DTC and not into limp mode. Had to pull over again, found more coolant spouted.

Anyone had this experience before? What's the normal temp range for a puma engine. If this is a serious issue, what's the cause of it and how to resolve it?

Thanks in advance.
Wei

Don't know what the cause is but your temps are too high - I need 42degree heat, some big hills and a loaded trailer to get above 100degrees that quickly.

Originally Posted by labrado

Yesterday while I was cruising on M11, the engine went into limp mode. I pulled over and found the the coolant was ...

Forgot to mention mine is a stock puma engine, no remap.

how many km has it done? also, have you examined the radiator for blockages? i recently had a 130 puma getting hot while working and found the radiator core 50 to 60% blocked/ filled with baked hard mud from getting immersed in a giant boghole a few weeks prior!

these engines are not renowned for head gasket leaks but it has been known to occur, they are pretty robust in that department.

the possibility is either a loss of circulation, or a lack of heat exchange ie blocked radiator.


jc

Originally Posted by justinc

how many km has it done? also, have you examined the radiator for blockages? i recently had a 130 puma getting hot while working and found the radiator core 50 to 60% blocked/ filled with baked hard mud from getting immersed in a giant boghole a few weeks prior!

these engines are not renowned for head gasket leaks but it has been known to occur, they are pretty robust in that department.

the possibility is either a loss of circulation, or a lack of heat exchange ie blocked radiator.


jc

Hi JC,
The engine has done abt 108,000km. I haven't checked any blockages, will do it tmr.
Any easy way to identify the loss of circulation? thermostat not fully open? coolant pump not working well?

That is a good point JC, and mud can work at low speeds too. Drove for 3 hours at 100, but after 20 minutes crawling in H4 up a gentle rise the car overheated. Mud in the radiator was the culprit.

The only issues I've had with my 2.4 TDCi overheating (regularly going into limp mode up a hill) have been as a cause of mud blocking up the gaps between the radiator fins thanks to having too much fun in the Watagan puddles.

I haven't ever experienced coolant spurting issues though.

Bobby

Can you hear your engine fan kicking in? I was driving my new PUMA the other day - and you can definitely hear when it's warm outside that the engine fan is engaging and making a bit of noise. A stuffed vscious coupling on the fan will mean this does nto happen and you may get overheating as you describe when the engine is under heavy load at low RPM's... Not usually at 100kmh though...

I wonder if you have recently added any extra driving lights?

If the radiator is clear and thermo fan operation checks out O.K., what about a faulty cap on the reservoir. If the system can't hold the pressure, I think the boiling point is lowered and might explain fluid release at around 100 degrees, assuming no blown gasket. Is the coolant level dropping during normal driving? Why LR could not make a reservoir you can easily see the coolant level in is beyond me.