heater valves break every 6 months or so...


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heater valves break every 6 months or so...

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Auto Repair Home>> Automotive Repair>> Engine Troubleshooting

zshift
New User

Jun 19, 2008, 10:30 PM

Post #1 of 3 (1380 views)

heater valves break every 6 months or so...	Sign In

Hi, I have an '89 Chevy Camaro RS 2.6L.
Ever since I got the car (2+ years ago) the heater valve (Part#: W0133-162673) has broken nearly every 6 months. It always breaks near the top, with a crack in between the 2 vertical rows of hoses. It doesn't make sense why this would happen so often. If anyone can help explain why this is happening I would greatly appreciate any help in resolving this issue.

update: I changed the part this morning. It wasn't cracked like the previous time, but something was loose and rattling inside. Also, sorry for posting in the wrong subforum, I just noticed that there was a heating/AC subsection. I will continue this post in that forum.

(This post was edited by zshift on Jun 20, 2008, 6:35 AM)

zshift
New User

Jun 19, 2008, 10:36 PM

Post #2 of 3 (1378 views)

Re: heater valves break every 6 months or so...	Sign In

a picture can be found here
http://www.partsamerica.com/ProductDetail.aspx?MfrCode=FAA&MfrPartNumber=74805&PartType=394&PTSet=A

the crack is under the top right in the middle of the pic. also, my AC is broken, and i noticed this part is also used for the AC. when my car overheated, the AC compressor was hot. Could having a broken AC system cause this piece to break?

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jun 20, 2008, 9:03 AM

Post #3 of 3 (1368 views)

Re: heater valves break every 6 months or so...	Sign In

Cheap little sucker isn't it? The impact of heat and A/C is really only if heater core is fighting with the evaporator in which case heat wins. Not certain but when A/C is requested the flow of heat is supposed to quit - no fighting in there boys!

This job seems to allow for the heater to be a bypass also - necessary for even engine temps. Any overheating engine while a/C is on just throws radiant heat to condenser some and just aggrevates the show.

Compressor being hot can be somewhat normal. If you are feeling the area where gas has just been compressed it is hot and on it's way to be cooled and condensed up front. If you can take a high side pressure reading or an infrared thermo reading of compressor and lines either are informative. Ex: With R-12 a HP of 230psi means it is 150 degrees Fahrenheit - that's hot to the touch as you may have found out and could be within norms.

A/C is involved in many aspects of the car and vs versa so can't be ignored completely with things that may not have much to do with the performance of the A/C,

T

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