General Maintenance & Repairs Leaks | Squeaks | Clunks | Rattles | Grinds

Help i have a coolant leak

Thread Tools
 
Search this Thread
 
Old 02-17-2009, 06:19 PM
  #1  
TECH Resident
Thread Starter
iTrader: (18)
 
5301113's Avatar
 
Join Date: Apr 2007
Location: Odessa TX
Posts: 953
Likes: 0
Received 0 Likes on 0 Posts
Angry Help i have a coolant leak

I think the leak is coming from the water pump. I have a pic to see if I'm right. The red line on pic is where the coolant is coming out,the yellow lines show the water pump . you can see where is has started to drip.This is one time i dont want to be right. How hard is it to replace the water pump? Where to get one?
Attached Thumbnails Help i have a coolant leak-water-pump.jpg  
Old 02-17-2009, 06:22 PM
  #2  
Banned
iTrader: (2)
 
LS6427's Avatar
 
Join Date: May 2008
Location: South Florida
Posts: 11,291
Likes: 0
Received 11 Likes on 11 Posts

Default

Unfortunately you need a new water pump, that is leaking where its supposed to when you lose the seal, the weep hole.

Its really not hard at all, little time consuming, but certainly not hard. Get new gaskets from the dealership and do it your self. Maybe a 1-2 hour job for a beginner.
Old 02-17-2009, 06:23 PM
  #3  
Banned
iTrader: (2)
 
LS6427's Avatar
 
Join Date: May 2008
Location: South Florida
Posts: 11,291
Likes: 0
Received 11 Likes on 11 Posts

Default

any auto parts store has off brands, or the dealership of course, or here for off brands or an AC Delco factory new pump.

www.rockauto.com
Old 02-17-2009, 06:42 PM
  #4  
TECH Resident
Thread Starter
iTrader: (18)
 
5301113's Avatar
 
Join Date: Apr 2007
Location: Odessa TX
Posts: 953
Likes: 0
Received 0 Likes on 0 Posts
Default

I thought so . Ok on the site you sent me which water pump is better?Any luck with different brand than AC Delco or it doesn't matter? Do you know the torque specs for the bolts?
Old 02-17-2009, 06:48 PM
  #5  
Banned
iTrader: (2)
 
LS6427's Avatar
 
Join Date: May 2008
Location: South Florida
Posts: 11,291
Likes: 0
Received 11 Likes on 11 Posts

Default

Originally Posted by 5301113
I thought so . Ok on the site you sent me which water pump is better?Any luck with different brand than AC Delco or it doesn't matter? Do you know the torque specs for the bolts?
I;m not 100% sure, but I thi9nk 21 ft/lbs, there's torque spec sheets on the net, just search "LS1 torque specs" on Google.

I would first call PepBoys and Advance Auto and the like, because alot of those places offer Lifetime warrantees on parts like these. If there are no lifetime warrantees offered, I personally go with AC Delco stuff. But I'm sure you'll get some good years out of any of them.
Old 02-17-2009, 06:51 PM
  #6  
Banned
iTrader: (2)
 
LS6427's Avatar
 
Join Date: May 2008
Location: South Florida
Posts: 11,291
Likes: 0
Received 11 Likes on 11 Posts

Default

Torque specs are:
first pass: 11 lbs
Sec pass: 22 lbs

http://www.ls1howto.com/index.php?category=1
Old 02-17-2009, 08:12 PM
  #7  
Staging Lane
iTrader: (5)
 
98childsta's Avatar
 
Join Date: Aug 2007
Location: Lima, Oh
Posts: 65
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by LS6427
Unfortunately you need a new water pump, that is leaking where its supposed to when you lose the seal, the weep hole.

Its really not hard at all, little time consuming, but certainly not hard. Get new gaskets from the dealership and do it your self. Maybe a 1-2 hour job for a beginner.
x 2 and if it takes you longer than 2 hrs you are taking wayy to many breaks in between. . I did my last month, it took me from beginning to end like 45mins but I just did it, the car had already cooled off and I was in a heated garage.
Old 02-17-2009, 10:56 PM
  #8  
12 Second Club
 
nemss1's Avatar
 
Join Date: Jun 2008
Location: Edmond, OK
Posts: 2,587
Likes: 0
Received 2 Likes on 2 Posts
Default

really easy to do. remove belt. remove all hoses frm pump. remove air intake assembly to have more room. remove 6 bolts and the pump is off
Old 02-18-2009, 08:16 AM
  #9  
TECH Resident
Thread Starter
iTrader: (18)
 
5301113's Avatar
 
Join Date: Apr 2007
Location: Odessa TX
Posts: 953
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by 98childsta
x 2 and if it takes you longer than 2 hrs you are taking wayy to many breaks in between. . I did my last month, it took me from beginning to end like 45mins but I just did it, the car had already cooled off and I was in a heated garage.
Kool did you drain the coolant?Did you have to use a tensioner pulley to remove the belt?
Old 02-18-2009, 10:19 AM
  #10  
TECH Senior Member
 
joecar's Avatar
 
Join Date: Apr 2002
Location: So.Cal.
Posts: 6,077
Likes: 0
Received 11 Likes on 9 Posts

Default

You use a wrench on the tensioner pulley bolt (not to undo the bolt) to swing the tensioner to remove the belt.
Old 02-18-2009, 10:26 AM
  #11  
TECH Senior Member
 
joecar's Avatar
 
Join Date: Apr 2002
Location: So.Cal.
Posts: 6,077
Likes: 0
Received 11 Likes on 9 Posts

Default Bleeding air...

After you refill with coolant/water mix:

- leave radiator cap off,
- remove the hose from the steam tube (coming from under intake manifold) next to throttle body (attach a length of clear tube to the steam tube and run it past front of car into a bucket, easier to see air purging),
- run engine,
- as thermostat opens coolant level may go down, add coolant mix,
- run engine until only coolant (no air) comes from the steam tube.

Install a new radiator cap, they are cheap.
Old 02-18-2009, 12:57 PM
  #12  
Banned
iTrader: (2)
 
LS6427's Avatar
 
Join Date: May 2008
Location: South Florida
Posts: 11,291
Likes: 0
Received 11 Likes on 11 Posts

Default

Originally Posted by 5301113
Kool did you drain the coolant?Did you have to use a tensioner pulley to remove the belt?
No you don't drain the coolant. Whatever you lose in the process of changing the pump, you just replace.

I've always just started the engine after the job is done, top of the coolant while leaving the radiator cap off. Wait for the t-stat to open and start flowing coolant, top off as necessary. Wait for it to close and open twice, topping it off both times and you got all the air out.
Old 02-18-2009, 01:08 PM
  #13  
TECH Resident
Thread Starter
iTrader: (18)
 
5301113's Avatar
 
Join Date: Apr 2007
Location: Odessa TX
Posts: 953
Likes: 0
Received 0 Likes on 0 Posts
Default

Alright guys I got the pump I will fix it tonight.Thanx for the help. I will let y'all know how it goes.
Old 02-18-2009, 02:20 PM
  #14  
TECH Fanatic
iTrader: (18)
 
zacht's Avatar
 
Join Date: Feb 2006
Posts: 1,021
Likes: 0
Received 0 Likes on 0 Posts

Default

i should go get one too. never fails, buy something, and then something breaks. im finishing up my nitrous install, and i drop a washer under the car, pick it up an notice a 2 ft wide puddle of coolant. not but hours after i sent off 300 bucks for headers, what luck right? just sucks that i mounted my solenoids and nozzle in the area i now have to take back off.
Old 02-18-2009, 04:04 PM
  #15  
Banned
iTrader: (2)
 
LS6427's Avatar
 
Join Date: May 2008
Location: South Florida
Posts: 11,291
Likes: 0
Received 11 Likes on 11 Posts

Default

Originally Posted by 5301113
Alright guys I got the pump I will fix it tonight.Thanx for the help. I will let y'all know how it goes.
Did you get new gaskets from the dealership? The metal crush type gaskets? Don't use any sealer either.
Old 02-18-2009, 04:43 PM
  #16  
TECH Resident
Thread Starter
iTrader: (18)
 
5301113's Avatar
 
Join Date: Apr 2007
Location: Odessa TX
Posts: 953
Likes: 0
Received 0 Likes on 0 Posts
Default

The water pump came with 2 metal gaskets i assume they are crush type, 1 o ring, 1 paperish gasket for the t stat. I though of using some sealer but not any more
Old 02-18-2009, 04:47 PM
  #17  
Banned
iTrader: (2)
 
LS6427's Avatar
 
Join Date: May 2008
Location: South Florida
Posts: 11,291
Likes: 0
Received 11 Likes on 11 Posts

Default

Originally Posted by 5301113
The water pump came with 2 metal gaskets i assume they are crush type, 1 o ring, 1 paperish gasket for the t stat. I though of using some sealer but not any more
Thats cool than. I don't understand the paper gasket for the t-stat, they have no gasket, just a rubber o-ring.
Old 02-18-2009, 04:57 PM
  #18  
TECH Resident
Thread Starter
iTrader: (18)
 
5301113's Avatar
 
Join Date: Apr 2007
Location: Odessa TX
Posts: 953
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by LS6427
Thats cool than. I don't understand the paper gasket for the t-stat, they have no gasket, just a rubber o-ring.
I know i though the same thing. I know it's for the t stat because of the shape but I wont use it. One the instructions it says that new pump will have a small, temporary seepage of coolant from the weep hole during initial run in period and it should stop after the seal has been allowed to "lap in" Did yours leak a little at first?
Old 02-18-2009, 08:56 PM
  #19  
TECH Resident
Thread Starter
iTrader: (18)
 
5301113's Avatar
 
Join Date: Apr 2007
Location: Odessa TX
Posts: 953
Likes: 0
Received 0 Likes on 0 Posts
Default

It's Done. THANKS EVERYONE FOR YOUR HELP
Old 02-21-2009, 03:34 PM
  #20  
TECH Fanatic
iTrader: (18)
 
zacht's Avatar
 
Join Date: Feb 2006
Posts: 1,021
Likes: 0
Received 0 Likes on 0 Posts

Default

ok, i put a new pump on mine 2 days ago also, ive been following this thread and all. so i put it on, put coolant back in it, and topped it off. left the cap off, let it warm up and kept topping it off. i drove it about 120 miles yesterday, everything was good. temp never went over 170-175. today i hop in it, and the low coolant light comes on. i check the coolant, and had to top off the radiator a little more, less than 2 inches. its still on tho.... i even unplugged the battery in hopes it would go off, it came back on? anyone know whats up with this?



All times are GMT -5. The time now is 02:57 PM.