idle above normal

Teddy · 29th June 2018, 18:26

Hello,
sometimes, when waiting for trafficlights, the idle goes up from 600 to 1000 rpm and the needle for cooling goes down to nearly blue. That will takes a few minutes and than all goes to normal. While driving the same happens, only than you don't know about the rpm but the coolingneedle goes down and after a few minutes back to normal.
What can be the problem?
Gerard

marinabrian · 29th June 2018, 18:43

Quote:

Originally Posted by Teddy

Hello,
sometimes, when waiting for trafficlights, the idle goes up from 600 to 1000 rpm and the needle for cooling goes down to nearly blue. That will takes a few minutes and than all goes to normal. While driving the same happens, only than you don't know about the rpm but the coolingneedle goes down and after a few minutes back to normal.
What can be the problem?
Gerard

It is a poor connection to your coolant temperature sensor/defective CTS

The CTS on the V6 is in the vee adjacent to the thermostat IIRC.

Hope this helps

Brian

29th June 2018, 18:26	#1
Teddy Avid contributor Rover 75 saloon 2.5 auto Join Date: Mar 2011 Location: Zandvoort NL Posts: 177 Thanks: 72 Thanked 23 Times in 16 Posts	idle above normal Hello, sometimes, when waiting for trafficlights, the idle goes up from 600 to 1000 rpm and the needle for cooling goes down to nearly blue. That will takes a few minutes and than all goes to normal. While driving the same happens, only than you don't know about the rpm but the coolingneedle goes down and after a few minutes back to normal. What can be the problem? Gerard