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post #1 of 9 (permalink) Old 08-23-2019, 11:46 AM Thread Starter
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no Heat anymore..

Hello, Spider 1982

after a successful transmission + clutch + axle bearings +...+.. replacement all works great.. except I don't seem to get any heat from the heater anymore. It was kind of weak before, now is really almost not working. Any thermostat valves somewhere for the heater? ANy good pointers ?

The fan ( 1 speed ) is working..
Giuseppe

"alfista"
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post #2 of 9 (permalink) Old 08-23-2019, 01:06 PM
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no heat is generally the heater control valve (bolted to the heater itself, look up under the dash, roughly above the gas pedal)
Bit of a pain to swop it out because its awkward to get at (easier if you remove the driver's seat and lie on your back!), but can be done....w/o AC is easier.
Took me a good hour first time I did it. Then the new valve failed a week later spewing hot coolant onto my feet, so had to do it again...2nd time around took me less than an hour, but not much less!...
photo here
https://www.alfabb.com/bb/forums/5242282-post1.html

Dom - Alfa Spider 1990 S4 - formerly: Alfa 101 Sprint, 2600 Sprint, Montreal - family classics: Jensen Interceptor II, '58 Hooper RR Silver Cloud I, Shadow II, '60 Corvette.
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post #3 of 9 (permalink) Old 08-23-2019, 01:09 PM Thread Starter
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Thank you!

I think I need to take the seat out for another side project ... not too cold in California right now, but I was to figure it out.
Yes no A/C in my car.

Cheers,
Giuseppe

"alfista"
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post #4 of 9 (permalink) Old 08-24-2019, 01:56 PM
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its 101 today, you need heat?
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post #5 of 9 (permalink) Old 08-24-2019, 02:00 PM
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also a bad t-stat will cause a no heat problem inside the car.. fan working?
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post #6 of 9 (permalink) Old 08-24-2019, 07:57 PM
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Quote:
Originally Posted by scagliog View Post
Hello, Spider 1982



after a successful transmission + clutch + axle bearings +...+.. replacement all works great.. except I don't seem to get any heat from the heater anymore. It was kind of weak before, now is really almost not working. Any thermostat valves somewhere for the heater? ANy good pointers ?



The fan ( 1 speed ) is working..

Giuseppe


After a engine swap in my spider I had no heat too. Had to bleed the air out of the system. There is a bleeder bolt on top of the water pump. I did not did bleed my system, just ran the heater for a couple of weeks and the air worked its way out of the system.


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Ken Smith
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post #7 of 9 (permalink) Old 08-24-2019, 08:03 PM
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While doing other work, I once accidentally put a kink in the heater hose, right at the firewall. It was hard to see from either side, but once I pulled it free, it was apparent what had happened.

-Kevin
1988 Spider Veloce (with lots of 3D printed parts)
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post #8 of 9 (permalink) Old 08-24-2019, 08:44 PM Thread Starter
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Thanks a lot!.... You know there is a bleeder bold on top of the plenum but for the love of God I was not able to move that.... so I might just check for kinks and run the heater for a while ...

Grazie!
Giuseppe

"alfista"
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post #9 of 9 (permalink) Old 08-25-2019, 11:23 PM
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The nut on the rear of the intake manifold can be used as an air bleed. On older 105's it had a real screw in bleed valve. Now just a cheap nut.

Robert
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