Heater control valve ?
#1
Heater control valve ?
First post. I'm sure this is covered someplace. Just now diving in...
My HCV started leaking. Replaced. Still leaking. Then replaced hoses. Same. No prior issues. Anything that could cause this issue besides a faulty "new" HCV?
Car is an 87' z28. 305 tpi.
Thanks.
My HCV started leaking. Replaced. Still leaking. Then replaced hoses. Same. No prior issues. Anything that could cause this issue besides a faulty "new" HCV?
Car is an 87' z28. 305 tpi.
Thanks.
#2
Supreme Member
Join Date: Jul 2009
Location: Kitchener, ON
Posts: 2,327
Likes: 0
Received 7 Likes
on
5 Posts
Car: 1988 GTA
Engine: LB9
Transmission: T5
Axle/Gears: 3.45
Re: Heater control valve ?
You had a leak, you've replaced every piece that could possibly leak and now there's still a leak. There are 3 possibilities - The leak is somewhere else (like the throttle heater hose?), or one of the hoses isn't clamped straight, or the valve is leaking because it's defective (unlikely) or one of the or plastic nipples got crushed by over tightening a hose.
#3
Re: Heater control valve ?
I was wondering what else, if anything could be a potential cause. The only leak is at the valve? If nothing else will do so, makes me suspect the HCV.
#4
Senior Member
iTrader: (2)
Join Date: Aug 2014
Location: Fort Collins, CO
Posts: 575
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Firebird Formula
Engine: 5.7L TPI
Transmission: 700r4
Axle/Gears: 3.23
Re: Heater control valve ?
Where is it leaking from? Are you using the screw type hose clamps or the spring type? Maybe the heater core could be plugged up causing high pressures?
#5
Re: Heater control valve ?
Installed new cap on radiator tonight. Here is what I now know....
Valve purges.... Still. AC off, turned bottom temp lever to heat..., no leaky
Thread
Thread Starter
Forum
Replies
Last Post