Question about 1999 Land Rover Discovery
Rover had a rough idle a few days prior upon (warm) startup and overheated 3 days later...it will run fine for ten mins. or so but then temp gradually rises...turning the heater on will keep it from overheating which makes me think(thermostat). but, it should open within a few mins(not ten+)...so leaning toward waterpump!?...also havent yet been able to pressure test cylinders for possible head gasket problem. also cooling fans seem to work some of the time. should they only run when the a/c is on or when the engine is well into normal operating range and even after the engine is turned off...ive kept up with maintaince for years,oil,air filter,plugs,wires fluids, and various sensors that are prone to blow on these 'ol discos....HELP. im planning on doin all work myself so the more technical the better!
Check the pump,drive belt for wear and the free rotation of the water pump if your loosing water the rad cap can go bad otherwise the t-stat and a rad flush would be the go...
Posted on Apr 12, 2018
I agree with starting with the t-stat first, then moving on wards .... however, the water pump on these trucks can and DO fail.
Posted on May 10, 2017
Start with the cheapest part and that would be the thermostat. They are easy to replace and that appears to be the issue. They do wear out or stick.
Posted on Mar 17, 2017
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Posted on Jan 02, 2017
Check the door switches for the interior lights and tighten the screws holding these on to make a good earth contact.Knock the door locks lightly with a hammer to get the insides loosened up and lube these with a penetrating spray.
Posted on Nov 30, 2008
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