sl3196 Posted October 25, 2003 Report Share Posted October 25, 2003 When my car is running and cold I can smell coolant. It seems to go away after it is warmed up but sometimes it will come back. Is this my heater core leaking? If so, how much of a pain in the ass is this to fix. '96 cutlass 2dr 3100 Quote Link to comment Share on other sites More sharing options...
PaPaPooh Posted October 25, 2003 Report Share Posted October 25, 2003 window fog up when cold with defrost on? i would get it pressure tested autozone may have on you can rent good luck Quote Link to comment Share on other sites More sharing options...
sl3196 Posted October 25, 2003 Author Report Share Posted October 25, 2003 yep the windows fogged up. I live in wyo. I don't know what an autozone is, lol. Napa has one I bet. Quote Link to comment Share on other sites More sharing options...
PaPaPooh Posted October 25, 2003 Report Share Posted October 25, 2003 i would put money on it being your heater core then Quote Link to comment Share on other sites More sharing options...
sl3196 Posted October 25, 2003 Author Report Share Posted October 25, 2003 How hard is it to replace? Quote Link to comment Share on other sites More sharing options...
PaPaPooh Posted October 25, 2003 Report Share Posted October 25, 2003 i have no clue maybe someone else can jump in and tell you Quote Link to comment Share on other sites More sharing options...
DOHCRagtopguy Posted October 25, 2003 Report Share Posted October 25, 2003 It's a pain in the ass. When the wife's 3.4 heater core started leaking I used a product called K&W Block Seal on it. Good stuff. You just drain all the A/F out because it's not compatible with it, refill the system with water, add the K&W, run it for 1/2 hour with heat on, then drain everything out let it sit overnight and refill with A/F the next day. Problem solved. K&W forms a permanent cold weld because of the sodium silicate (liquid glass) in it. It's not a cheap temporary fix like the other pour and go shit that you pour into the A/F. Quote Link to comment Share on other sites More sharing options...
sl3196 Posted October 26, 2003 Author Report Share Posted October 26, 2003 It's okay to leave it empty overnight without antifreeze? Won't the block crack? Quote Link to comment Share on other sites More sharing options...
DOHCRagtopguy Posted October 26, 2003 Report Share Posted October 26, 2003 No your block won't crack overnight because it'll cool off gradually. You just drain it out after the treatment and let it sit until morning. Just follow the directions and your problem will be fixed. And no, it won't clog your radiator up or anything. Be sure your heater control is set for heat when you do it. Quote Link to comment Share on other sites More sharing options...
sl3196 Posted October 26, 2003 Author Report Share Posted October 26, 2003 even when the car is outside when it is below freezing? Quote Link to comment Share on other sites More sharing options...
Redfox340 Posted October 26, 2003 Report Share Posted October 26, 2003 even when the car is outside when it is below freezing? Yes, you can completely drain the system and have no problems. Thermal expansion damage of metals are affected by radical / fast tempreture changes. You'll be be fine with the car drained. However, DO NOT start the vehicle with the coolant system empty! You know why. 8) - Erik Quote Link to comment Share on other sites More sharing options...
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