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Running hot

Forum Voyager IV Running hot

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2005 Voyager / Grand Voyager IV 2.8 (171 cui)

8 discussions

Fuel diesel. 3-speed Automatic transmission. Engine 2 800 ccm (171 cui).

2017-08-11 16:57:32

hi everyone got a 2.8 chrysler grand voyager diesel 55 plate 4 generation car is running good but the temperature when engine put under strain goes straight in the red ive got to keep cabin heater set at 25 degrees to take heat out of enginne driving normal or sat in a que temp stays on about half its just when going up a steep hill or givin it some the termostate goes straight in the red does any one have any ideas as the termostate is a sealed unit costing £125 been told not water pump as it would over heat all the time thanks for any help

2017-08-11 17:04:20

I would check that your cooling fan is kicking in first off and if that working ok then check water flow through radiator. I believe they are prone to clogging up which cause the hot running and overheating. Thermostats when they fail tend to stick open so cause to run cooler (not get to normal running temp)

2017-08-11 17:06:19

Also if was water pump pipes and rad don't heat up as normal cos they be no water pumping round.

2017-08-11 17:10:08

alos1608: hi thanks for that yes the fan is working ok thats the first thing i checked it just seems odd that running normal speed everything is ok but going up hill or foot down the thermostate gauge creeps up if you get up the hill back to normal running thermostate goes back to half i just dont know

2017-08-11 17:11:52

chunkymaster: What you have is the classic symptom of a clogged rad or at least poor water circulation. Cheap and easy way to eliminate this is to drain and flush your system with a good quality rad flush solution and then re-fill and drive up a few hills to see if its made a difference. Also check for any kinked or collapsed water hoses. Also test the fan cut-in temperature by running the engine while stationary and note where on the temp gauge the cooling fan cuts in which should be just above a horizontal needle at "normal".

2017-08-11 18:38:55

I had the same issue when driving down to Cornwall. Popped in some Radweld and topped up the coolant. Been ok ever since (4months)

2017-08-12 01:42:33

jburdass: hi been into my local motorworld and the guy seems to agree with you i bought some radiator cleaning/flush to put in i can do that and undo the bottom hose after it done it time running in hot engine the question is whats the best way to flush system cause it says once system drain flush till water runs clean then refix hose top up and all should hopefully be ok

2017-08-12 16:55:08

chunkymaster: Just refill with water and run until hot, drain and repeat then refill with water antifreeze mix and all should be well.