Replacing the E30 Heater Core and Valve

[Wishno87]

Have a quick question about testing the valve.
I heard that you can feel the valve opening as you turn the temperature knob up but should it move durning the entire range of the knob or is it an I/0 kind of thing? Trying the fix the GFs heat and the valve only moves during the 7-9 range of the heat control.

[JinormusJ]

To anyone replacing any of the heater core stuff
BUY NEW O-RINGS, even if yours are relatively new

I spent 3 hours and took my heater core out 3 times because it kept leaking; have to wait til Saturday til new O-rings arrive, but the car isn't a daily, so it can afford to sit in shambles for a couple days

[Anguz]

do you have to bleed the coolant system after?

[polishadonis]

I have a working heater core for $50. Email me at emailismynewphone@gmail.com

Adam

[mr walker]

I called Blunttech after not being able to find the pipes on their website (or any other place for that matter), and they hooked me up. This was right around the holidays, so availability may have changed since then (that appears to be the case per the above post). They were pretty cheap IIRC.

I asked the dealer first...they wanted $50. For each pipe. F that.

[DuxNW]

Where are you guys getting the pipes from?

[luckysnafu]

Just an FYI for anybody ordering the pipes for this DIY:

UPDATE Feb 10:

My dealer sucks. There are over 230 of these available right now in Germany. None in the US so you will have to wait a couple of weeks to get one in. Mine came in today even though the dealer had no idea what was going on. Blunttech has them in stock as well if you need one faster.

[De //m3]

Sucks. When mine ate it I noticed my foot burning, then realized coolant was dripping down from the water valve onto my right feet.

Same condensation on windshield as well, but relatively simple to repair, about an hour.

[Desaevious]

Yeah there really isn't any thing I can continue theorizing but I can't get to it for another three days because of work. :(

[Grand525]

I'd just replace the inlet and outlet pipes, since they are not too hard to get like the whole heater core.

[Desaevious]

Damn, so my heater core doesn't appear to be leaking but where the metal pipes come out of the firewall and into the two hoses you guys connect as a bypass is loose and leaking. The hoses are on there and the clamps are good, but I can see coolant trickling from the connection and straight down. What are the odds that the metal pipes are somehow bad? This problem happened out of the blue...

[davem]

Damn, pulled everything out because my heater valve was leaking... there's some white coolant residue in the compartment where the heater core sits... fuckin' e30...

[blackhawkimpact]

Not exactly sure to be honest.
Driving home and turned on my street and steam came out from all my vents. Carpet soaked by my gas pedal and that was it.

This happen to me to, I got scared. Thought the car was gonna blow up lol

[archie]

Not exactly sure to be honest.
Driving home and turned on my street and steam came out from all my vents. Carpet soaked by my gas pedal and that was it.

Im storing a few cars for a mechanic at my tow yard and he said he would fix my car in trade. So I dont have to do the job. I was gonna do it but he offered for the storage trade.

[davem]

what exactly is happening here? ^ plastic tank leaking?

One of my o-rings is shot and my water valve must have blown its internal seals.