Bazjabbar

6 cylinder.

Hi, ours is 3.0i Sports 2005 E53.

Also the blue liquid test has been done too and has come negative. Liquid remained blue. Heating system fully works. Car doesn't jerk, starts and drives as normal.

Hello. The AA technician that came out said the water pump is running fine, and other parts are running fine. He put it down to either a hole elsewhere allowing air to come into the system or possible headgasket failure ... He did a tempreture test on the pipe with a lazer temp checker and it seemed ok he said. However at this moment is time there is no mayo on engine oil cap, the oil looks fresh. The high tempreture doesnt always show up on the dashboard, it seems like its normal operating temp but engine management light is on and you can feel the heat around the cars emgine bay.

Hi, I just recently bought a BMW X5 2005. Checked out the car properly. Everything seemed fair and well. Impressively pulled through all the tests we put it through etc nothing came uo worth querying. Driven the car over 140 miles back home on the same day and around 30 miles the next day too. However on the 3rd day I noticed engine overheating. Temp gauge was normal. I noticed that it took a lot of time for the car to cool down when the engine was warm. Alarms bell rang at this time, however there was nothing on the dashboard to show anything was wrong. Waited a few hours and car was cool. Took it out for a short drive and after a few minutes the engine management light came up, shortly followed by the yellow explaination mark on the left hand size of the dashboard (this is not the tyre explaination mark though). I also noticed the temp gauge playing up. The car clonked out a few times. I pulled up in safe place and called AA. Technician came and checked everything out. Did a few tests nothing showed up positive. Previous owner told me that the expansion tank was changed recently as previous one popped. There was a lot of air lock / pressure in the coolant system. Heating was working fine. There is no mix of oil and water in the coolant system. All the other tests proved negative too. No milky/cloudy substance in oil. No white smoke. No obvious signs of head gasket failure. However ... the air lock in the coolant system is coming from somewhere. Can anyone advise further? Baz