gracie559

my car is leaking coolant, i changed out the coolant reservoir because we found a crack, but its still leaking and even though we fill it up it seems like its just disapearing. i need some advice please help!!

curepunx

iTrader: (3)

Make sure to check any/all hoses along with the radiator. Even a pinhole will cause a slight leak that can depreciate the amount of coolant in the system. You can also do a pressure test on the system. Use the search feature here on the forum(s), as it is VERY handy and helpful. If all else fails (not likely), then search via the web (i.e. google, etc)...

Goodluck!

PureDrifter

iTrader: (10)

what YEAR LS??

I know on my '99 (same for 98-00) there's a hose underneath the reservoir that will leak if the clamp isn't on 100%.

gracie559

its my heater core!! can anyone recommend any good site where can get a good deal on this oem part, or does anyone know what oe replacement part # i need??

deanshark

How do you know it's your heater core? Is it leaking on the passenger floor? Damn, the OEM heater core is $500. There's no aftermarket that I know of. When I changed mine last year I got it from a junkyard for something like $60 delivered. The only thing wrong with that is when they took it out they weren't so careful with it and bent the outlet pipe a tiny bit. I was just barely able to get it to fit through the firewall. The dealer wanted well over 2 grand to do the job, I did it in about 4 days in 20*-30* weather. Post #7 of this tells ya what needs to come out. https://www.clublexus.com/forums/ls4...ater-core.html
This (post #4) has a pic of the dash out; (about half the removal job of the heater core) https://www.clublexus.com/forums/ls4...d-removal.html
Are you doing this yourself? Have fun.

gracie559

my mechanic found the problem, he is also a longtime family friend lucky me, and thank god!! but i did find one online oem for 389 buks so i guess i can complain and yes theres significant coolant under the carpet!!, i have had this car for 3 years and it is a great car, my son is only 11 and he asked me to never get rid of it cause he wants it when he turns 18.... i thought that was so cute , but regardless this car has gone a long way!!

deanshark

If your mechanic changes the HC show him those links I posted. There are NO shortcuts to get the HC out, absolutely none. Good luck. If you have questions just ask. It is a big PITA to change. Take pics or a video so you know how everything (especially wires and wire connectors) go back together.