Boxster A/C dilemma - Rennlist - Porsche Discussion Forums

Boxster & Boxster S (986) Forum
Sponsored by:
Sponsored by: Porsche of Rancho Mirage

Boxster A/C dilemma


Old 03-08-2018, 01:51 AM
New User
Thread Starter
Join Date: Aug 2017
Posts: 2
Default Boxster A/C dilemma

Hello Guys

Ok. I'm new to the forum, but I've searched and can't seam to find the answer to my problem. I have a 2000 Boxster I purchased a year ago. The A/C isn't working. I have tested what I believe is about everything I can think of. The charge on the system is fine and everything seems to work if I run a 12 volt supply to the relay on the switch side. I don't seem to be getting a signal from the computer that tells the relay to close. I did swap the 2 computers out when i purchased the car due to the water under the drivers seat. Common problem for these cars due to the convertible rod ends breaking. I also replaced the LCD screen on the auto thermo due to it being blurred. What am I missing?? Is there something that would tell the computer to not turn the A/C on? I even called the dealer and talked to a tech about the replacement computer I put in and if it could be from a non AC car and he said highly unlikely. So why would the computer not send the signal to the relay especially since the 134 charge is fine? Any help would be awesome!!! I hate letting this beat me.
steetable is offline  
Reply With Quote
Old 03-11-2018, 01:58 AM
New User
Thread Starter
Join Date: Aug 2017
Posts: 2
Default need help from the pros

if i need to supply extra info please let me know. Maybe i'm missing something or maybe I bypassed a switch but I could really use some advise. Even if you think I should try different ECM's. I could use the input.


Thanks guys
steetable is offline  
Reply With Quote
Old 03-11-2018, 12:06 PM
Brian in Tucson
Join Date: Jan 2018
Posts: 118

When I've replaced compressors (on other cars) in the past, I've always replaced the accumulator, too. Usually the accumulator included a low pressure switch. The computer won't engage the compressor if the low pressure switch isn't closed, might yours be bad? Yeah, you aren't going to find a non A/C boxster PCM. And the likelihood of a bad PCM is probably slim. Unless you've actually gotten water under the drivers seat, same with the immobilizer.

I guess I'd suggest that you immediately get a Porsche repair shop manual.
Brian in Tucson is offline  
Reply With Quote

Thread Tools
Search this Thread
Quick Reply: Boxster A/C dilemma

Contact Us Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: