1992 Buick LeSabre cooling system

1992 BUICK LESABRE
Avatar
JIMBO72
  • MEMBER
  • 1 POST
Hi. My father-in-law's 1992 Buick LeSabre has a 3.8L engine in it, and has approximately 195,000 miles on it. Recently a cooling problem has popped up. He can't afford to get it fixed and I am not a mechanic but would like to help him. It seems to be a simple problem, really, but I need a little help.

The hose leading from the water pump to the head has a coupling that threads into the head. That coupling has broken and I do not know what that coupling is called or how exactly to replace it. It broke off in the threaded part of the coupling. Can you help??
Aug 8, 2007 at 3:19 AM
Avatar
CLY
  • ✓Experienced Mechanic
  • 308 POSTS
That is called a coolant bypass nipple. The new one(if you get it from GM) will be made of metal and the one that is in there is plastic.(witch is a good thing) I remove the alternator and then use a flat punch that is alittle bigger than the inside diameter of the broken nipple. I use a hammer and tap the punch into the broken nipple and then take vise-grips and turn the punch counter clock wise. Since the old nipple is made of plastic it usually comes right out. You may have turn it alittle then tap the punch back in and turn it some more til you get it out...

Hope this helps....

Cly
Aug 8, 2007 at 12:07 PM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle

Advertisement