4th Gen Ram Tech 2009 - 2018 Rams and the 2019 Ram Classic: This section is for TECHNICAL discussions only, that involve the 2009 - 2018 Rams and the 2019 Ram Classic. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

Weak Ac problem, condenser fan not spinning

Thread Tools
 
Search this Thread
 
Old Jun 21, 2018 | 11:57 PM
  #11  
Dragoneclipse's Avatar
Dragoneclipse
Thread Starter
|
Registered User
Joined: Jun 2018
Posts: 13
Likes: 0
Default

Ok sounds good. Checked for dtc and I didn’t have any faults. Is the electric fan supposed to kick on as soon as I start the truck with ac on?

sometimes ac blows warm till I turn ac off then back on again. It like it doesn’t like being started with ac left on.
 
Reply
Old Jun 23, 2018 | 12:12 AM
  #12  
primem's Avatar
primem
Record Breaker
Joined: Apr 2013
Posts: 1,815
Likes: 56
From: Alberta
Default

without the fan operating and no air flow the high side pressure will go high enough for the high side pressure cut out to shut off the compressor...the system restarts when the pressure drops.

with no fan...the sysem works ok when at highway speeds but blow warm air when your not moving.
 
Reply
Old Jun 23, 2018 | 12:47 AM
  #13  
Dragoneclipse's Avatar
Dragoneclipse
Thread Starter
|
Registered User
Joined: Jun 2018
Posts: 13
Likes: 0
Default

Ah hah that makes a lot of sense. So now I just need to figure out what controls fan operation. Should I start by replacing relays?
 
Reply
Old Jun 23, 2018 | 12:48 AM
  #14  
Dragoneclipse's Avatar
Dragoneclipse
Thread Starter
|
Registered User
Joined: Jun 2018
Posts: 13
Likes: 0
Default

I’ll be checking that high speed relay that was mentioned as soon as I can.
 
Reply
Old Jun 26, 2018 | 01:58 PM
  #15  
Dragoneclipse's Avatar
Dragoneclipse
Thread Starter
|
Registered User
Joined: Jun 2018
Posts: 13
Likes: 0
Default

Solved:

ok ok swapped the high and low speed relays and now the fan kicks on at idle. I’ve ordered a new relay to replace the now inop low speed relay. Thanks guys!
 
Reply




All times are GMT -4. The time now is 03:16 AM.