I own a 2002 Land Rover Discovery Series II. In the morning before starting vehicle, I noticed my upper radiator hose is collapsed/ a vacuum has occurred. I opened the coolant reservoir cap and the vacuum was released. What causes this?

 

Replace coolant reservior cap, or run it partially cracked open just a bit...until you get one...and see if that makes a difference.

Brian.

 

Deputy,

Thanks for the advice! I ordered a new cap, it arrives tomorrow. lol keep you posted.

New question- my oil light flickers on and off at idle. What are your thoughts? Thanks!

 

Sensor, oil pump, or bearings for the oil light. Does it flicker at idle upon a cold start or once it gets warmed up?

 

I only noticed it after I had been driving and came to a stop and was idling

 

what weight oil?

 

Besides what's already been mentioned, do you have a device to monitor engine temps? Not a bad idea to have one, since higher than normally engine temps can really thin the oil out. The gauge in the cluster is useless, for exact temp monitoring.

Brian.

 

I had the oil light issue evaluated. Oil pressure was good, sensor is functioning properly. However, I did change the oil to 5w 30- too thin. I’m switching to 15w 40.