Low heat at idle

Reply Subscribe

Thread Tools

Search this Thread

Feb 2, 2023

Cranium1814

Thread Starter

Registered!!

Joined: May 2021

Posts: 5

Likes: 0

Rep Power: 0

Cranium1814 is an unknown quantity at this point

Low heat at idle

Can anyone tell me if its normal for a civic to blow cooler at idle then at higher rpms . It seems that at lower rpms my civic blows cooler then when I'm driving .

Feb 2, 2023

Colin42

"Marge, anyone could miss Canada! All tucked away down there."

Joined: Feb 2016

Posts: 9,629

Likes: 1,282

From: Barrie, ON Canada

Rep Power: 221

Re: Low heat at idle

Check the coolant level. Water pump could be failing

Feb 2, 2023

Wankenstein

OF top 99.5% creator (Formerly of the Puffinblunts variety)

Joined: May 2012

Posts: 3,634

Likes: 109

Rep Power: 209

Re: Low heat at idle

Quote:

Originally Posted by Colin42

Check the coolant level. Water pump could be failing

Here's a good read on no heat at idle https://rustyautos.com/no-heat-at-idle/

You can check the strength of the water-pump by removing the radiator cap at cold start. Start and run the engine until it reaches operating temp. With the cap still off cautiously look into the radiator neck and watch for flow (current in one direction) at idle. Take a video of the flow and post it here.

Coolant system bleed is likely needed.

Last edited by Wankenstein; Feb 2, 2023 at 08:57 PM.