Truck running hot after new water pump?
#1
Registered User
Thread Starter
Join Date: May 2009
Location: Jonesborough, TN
Posts: 257
Likes: 0
Received 0 Likes
on
0 Posts
Truck running hot after new water pump?
A few weeks ago I noticed my truck leaking antifreeze out of the weep hole on the water pump, it was actually pouring out of it, and all around it. After the truck idled for a minute it slowed to a steady drip. I asked around and heard if if it's leaking out the hole that means the pump is going bad. After driving it to my friends wedding the pulley on the pump started making a lot of noise, so I knew the pump was bad. Also the engine was running a little hotter than normal.
Today I installed the new pump and flushed the coolant and refilled with mopar coolant. While driving it the temp gauge started creeping a little past 200 (half way mark). The truck never ran that hot ever until the pump started going out. Could there be air in the cooling system causing this problem? Anybody got any suggestions? Thanks
Today I installed the new pump and flushed the coolant and refilled with mopar coolant. While driving it the temp gauge started creeping a little past 200 (half way mark). The truck never ran that hot ever until the pump started going out. Could there be air in the cooling system causing this problem? Anybody got any suggestions? Thanks
#3
Registered User
Thread Starter
Join Date: May 2009
Location: Jonesborough, TN
Posts: 257
Likes: 0
Received 0 Likes
on
0 Posts
How do you remove the air in in the system? I have read where guys are taking off the T-stat and pouring coolant straight into the block. Would that work?
#4
Registered User
Join Date: Aug 2008
Location: Washington state
Posts: 157
Likes: 0
Received 0 Likes
on
0 Posts
I belive if you remove the fitting on the right side of the head next to the valvecover, the one plug that is smaller than the rest on the right side, and fill with antifreeze from there will remove any air pocket in the block.
#5
Registered User
Join Date: Mar 2004
Location: Mission B.C.
Posts: 31
Likes: 0
Received 0 Likes
on
0 Posts
Sounds stupid but make sure the serpentine belt is on correctly. This is the only vehicle that I have ever owned that does not have a diagram under the hood for the serp belt. I have read it can be put on wrong...and fit.
#6
Registered User
Join Date: Aug 2003
Location: Colorado
Posts: 438
Likes: 0
Received 0 Likes
on
0 Posts
Diesel87
I had the same issue a few months ago. Coolant dripping out of the weep hole. Replace the water pump and t-stat. Then after driving on the highway I noticed it ran hotter at highway speeds than it did at idle. Was up around 210 deg when doing 65mpg but as soon as I slowed down it would drop to 185-190 within 20 secs. Well I had a bubble in the system. Burped the bubble out and the truck temps are back to normal. Sounds like you either have air in your system or a slightly higher t-stat opening set point.
I had the same issue a few months ago. Coolant dripping out of the weep hole. Replace the water pump and t-stat. Then after driving on the highway I noticed it ran hotter at highway speeds than it did at idle. Was up around 210 deg when doing 65mpg but as soon as I slowed down it would drop to 185-190 within 20 secs. Well I had a bubble in the system. Burped the bubble out and the truck temps are back to normal. Sounds like you either have air in your system or a slightly higher t-stat opening set point.
#7
Registered User
Since I have a slight incline in my drive way, I parked on it after filling, left the rad cap off, heater set to high and let gravity work the air out. Seemed to get all the air out....topped it and have been good...
Trending Topics
#8
Registered User
Join Date: Aug 2007
Location: Upstate, SC
Posts: 728
Likes: 0
Received 0 Likes
on
0 Posts
You can remove one of the plugs on the head on the passenger side or I removed the heater core hose that comes off the head and filled through the rad cap until coolant came out the fitting where I removed the hose.
Thread
Thread Starter
Forum
Replies
Last Post
Strjock81
3rd Gen High Performance and Accessories (5.9L Only)
16
12-12-2007 09:53 AM
duallydave
Performance and Accessories 2nd gen only
3
08-07-2005 09:38 PM