First on this forum a little buggy....Cruise and A/c problems - Miata Forumz - Mazda Miata Chat Forums
Miata Forumz - Mazda Miata Chat Forums
Miata Forumz - Mazda Miata Chat Forums

NA (1989-1997) NA Miata discussion within. The MX5's first generation, the NA, sold over 400,000 units from 1989 to 1997.

Thread Tools Search this Thread
Old 06-20-2013, 04:12 PM   #1  
!!!! I NEED TO POST !!!!
Thread Starter
Join Date: Jun 2013
Location: Riverton
Posts: 2
Default First on this forum a little buggy....Cruise and A/c problems

I have two problems with my miata.

First it's a 92, ps,pw, cruise, a.c...1.6...think that's it.

Anyway, so we've had it a couple weeks, and have fiddled with both and not had any success.

For the cruise...the button on the clutch seems to be ok, there is power going out to the canister, and the light comes on at the dash. I don't really know how to test it from here. How would I know if it's just bad? Or the stalk? I can't tell if maybe that's the problem.

Second...the compressor...there's no refrigerant, and so I know that makes it stay off, but we tried to jump it from the plug, and we had no luck getting it to kick on...of course we don't really know what we're doing. Anyone have a picture of what the plug looks like? The one we were looking at was the one coming off the small hose, so I thought that was right.

Other than happy with the car. We got it super cheap, and since I commute 80 miles each way a day, going from 16 mpg to 34 mpg is wonderful! Car should pay for itself by mid Fall semester.
monizuki is offline   Reply With Quote
Old 06-21-2013, 06:52 AM   #2  
sixshooter's Avatar
Join Date: Jul 2011
Location: Tampa, FL; Lake Jackson (Atlanta), GA
Posts: 1,894

Figure 4 of this document should help a bit. You need to check the brake switch and various grounds first, I would think. It measures speed from speedo output voltage in the gauge cluster. The system is armed but not necessarily controlling speed when the light in the main switch is on.

Most cruise units will not engage below about 30-35mph, so to stationary test it, you need to put the car on a lift or securely on jack stands. Letting it idle in fifth gear with the wheels off the ground should net enough indicated speed to be able to engage or test the stalk circuit of the unit.

There is one wire feeding the clutch on the front of the AC compressor. 12v positive to it will engage it if it is not broken.
sixshooter is offline   Reply With Quote
Old 06-28-2013, 08:03 AM   #3  
MFz Regular
Join Date: Dec 2011
Location: Oakville, Ct
Posts: 60

Also, A/C button must be in and the fan turned to at least the low fan position to work. If you jumped the connector with the fan off =no joy. Don't run the compressor long without fluid or you burn the compressor out.
Meierznutz is offline   Reply With Quote
Old 07-02-2013, 11:03 AM   #4  
!!!! I NEED TO POST !!!!
Thread Starter
Join Date: Jun 2013
Location: Riverton
Posts: 2

So, thanks the stars...we have AC. Everything turns on, but the compressor is kind of weak. We have a friend that works at a dealership, and he thinks that the compressor won't last past this summer. It really just has to last the next three weeks...we have record setting heat this June and I have a 80 mile commute each way to go to school. gah!

Still working on the PS.
monizuki is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
g2g cruise in MD to Philly Suhhmanthalynn Local Meets, Events and Tech Days 0 01-09-2013 02:51 PM
A/C and Fan problems Markusj NA (1989-1997) 13 12-23-2012 12:14 PM
A little NB Action flying_solo NB (1998-2005) 5 09-17-2012 09:06 AM
92 cruise control RedTurboMiata NA (1989-1997) 16 03-01-2012 02:01 PM
Just having a little fun shoult NA (1989-1997) 7 10-31-2011 12:16 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -5. The time now is 06:02 PM.

© 2018 MH Sub I, LLC dba Internet Brands
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.