Automotive Forums .com - the leading automotive community online! Automotive Forums .com - the leading automotive community online!
Automotive Forums .com - the leading automotive community online! 
-
Latest | 0 Rplys
Go Back   Automotive Forums .com Car Chat > Buick > LeSabre
Reply Show Printable Version Show Printable Version | Email this Page Email this Page | Subscription Subscribe to this Thread
 
Thread Tools Search this Thread
Old 01-19-2012, 06:38 PM   #1
CAMFLIGHTRN
AF Newbie
 
Join Date: Sep 2004
Location: San Antonio, Texas
Posts: 51
Thanks: 0
Thanked 1 Time in 1 Post
'93 lesabre coolant leak behind the throttle body

93 Buick Lesabre
189,000

History, had a significant leak with a steady stream and since I had a similar leak about 8 years ago, and it was the water pump, I replaced the water pump again.

The leak is still there and upon closer examination (should have looked closer the first time, I discovered the leak is originating from somewhere behind the throttle body when the engine is running but can't see the source.

I don't see any hoses / bypass in that location? I plan on removing the throttle body to look behind but once I remove it won't be able to start the vehicle to isolate the leak.

Any thought, intake gaskets, etc.?
CAMFLIGHTRN is offline   Reply With Quote
Old 01-19-2012, 07:47 PM   #2
HotZ28
AF Moderator Elite
 
HotZ28's Avatar
 
Join Date: Feb 2005
Location: Gilligan's Island, Florida
Posts: 5,759
Thanks: 81
Thanked 72 Times in 72 Posts
Re: '93 lesabre coolant leak behind the throttle body

If you remove the throttle body, you must replace the seal. FEL-PRO Part # 61037. Can you post a pic of the leak & location?

__________________
Knowledge can be communicated, but not wisdom!

HotZ28 is offline   Reply With Quote
Old 01-19-2012, 08:45 PM   #3
CAMFLIGHTRN
AF Newbie
Thread starter
 
Join Date: Sep 2004
Location: San Antonio, Texas
Posts: 51
Thanks: 0
Thanked 1 Time in 1 Post
Re: '93 lesabre coolant leak behind the throttle body

Quote:
Originally Posted by HotZ28 View Post
If you remove the throttle body, you must replace the seal. FEL-PRO Part # 61037. Can you post a pic of the leak & location?

here is the pictue, it appears to be coming from the area where the throttle body attaches to the intake manifold.. not sure if it is coming from around the bolts. The pen is pointing in the general direction of the leak
Attached Images
File Type: jpg IMAG0228.jpg (289.1 KB, 11 views)
CAMFLIGHTRN is offline   Reply With Quote
Old 01-19-2012, 09:05 PM   #4
HotZ28
AF Moderator Elite
 
HotZ28's Avatar
 
Join Date: Feb 2005
Location: Gilligan's Island, Florida
Posts: 5,759
Thanks: 81
Thanked 72 Times in 72 Posts
Re: '93 lesabre coolant leak behind the throttle body

Quote:
Originally Posted by CAMFLIGHTRN View Post
here is the pictue, it appears to be coming from the area where the throttle body attaches to the intake manifold.. not sure if it is coming from around the bolts. The pen is pointing in the general direction of the leak
May be LIM gasket, but if you are planning to pull the T/B anyway, replace the gasket & see what happens.
__________________
Knowledge can be communicated, but not wisdom!

HotZ28 is offline   Reply With Quote
Old 01-19-2012, 09:33 PM   #5
gmtech1
AF Enthusiast
 
gmtech1's Avatar
 
Join Date: Aug 2011
Location: Beachside
Posts: 2,000
Thanks: 4
Thanked 301 Times in 299 Posts
Re: '93 lesabre coolant leak behind the throttle body

You may find that the upper intake (plenum) is deteriorated and needs replacing also.
gmtech1 is offline   Reply With Quote
Old 01-20-2012, 07:32 AM   #6
CAMFLIGHTRN
AF Newbie
Thread starter
 
Join Date: Sep 2004
Location: San Antonio, Texas
Posts: 51
Thanks: 0
Thanked 1 Time in 1 Post
Re: '93 lesabre coolant leak behind the throttle body

thanks, will be removing the UIM today, If it look bad/cracked will replace it and plan to replace the upper and lower gaskets and throttle body gaskets.

Hopefully this will take care of the leak

Will post pics and updates soon
CAMFLIGHTRN is offline   Reply With Quote
The Following User Says Thank You to CAMFLIGHTRN For This Useful Post:
HotZ28 (01-20-2012)
Old 01-20-2012, 02:27 PM   #7
Tech II
AF Fanatic
 
Join Date: Jul 2011
Location: Worcester, Massachusetts
Posts: 5,017
Thanks: 70
Thanked 617 Times in 609 Posts
Re: '93 lesabre coolant leak behind the throttle body

I would have just replaced the throttle body gasket first, to see if that solved your problem......
Tech II is offline   Reply With Quote
Old 01-21-2012, 02:49 PM   #8
CAMFLIGHTRN
AF Newbie
Thread starter
 
Join Date: Sep 2004
Location: San Antonio, Texas
Posts: 51
Thanks: 0
Thanked 1 Time in 1 Post
Re: '93 lesabre coolant leak behind the throttle body

Thanks everyone,

The intake manifold was cracked and warped near one of the O-rings and based on the discoloration around the area, this was where the leak was coming from.

I replaced the intake manifold ($149) plus the lower gaskets ($20), fuel injector O-rings and also replaced the thermostat since it was out anyway and it now runs GREAT, no leaks!!

Although now the engine now runs hot. about 250, (redline is 270) thermostst is OEM 195

as an added note I also replaced both the temp sensor and the temp switch since I damaged the connectors trying to get them out. the are in the correct position and the connectors are attached.

Could this just be an air lock in the sysytem, the wrong sensor/switch (I checked the part #'s twice and both seem and look OK)
or did i miss something altogether?
CAMFLIGHTRN is offline   Reply With Quote
 
Similar Threads
Thread Thread Starter Forum Replies Last Post
1997 Thunderbird LX 4.7L - Does anyone have a pic of the throttle body fully connected? LauraLynn22 Thunderbird 0 08-27-2011 02:53 AM
'94 TS 3800: HUGE coolant leak - and other fluids jarl Trans Sport 23 10-31-2009 07:53 AM
'00 cavalier, odd noise and oil in air intake/throttle body warik Cavalier Problem Diagnosis 4 04-23-2009 06:11 PM
98 Grand Caravan 3.3L Coolant Leak hooperkj Caravan | Voyager 4 04-22-2009 04:17 PM
2000 Coolant Leak from under throttle body ?? Robdaparamedic Windstar 2 08-27-2008 09:59 AM

Reply

POST REPLY TO THIS THREAD


Bookmarks

Tags
body, coolant, leak, throttle
Go Back   Automotive Forums .com Car Chat > Buick > LeSabre

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 04:00 PM.

Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
 
 
no new posts