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

bought a 96 for my daughter ....

Old May 13, 2013 | 11:25 AM
  #11  
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idle should be 850-900
Old May 13, 2013 | 11:29 AM
  #12  
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How would you adjust idle speed? If it was a carb, no problem. Not much experience with injection.
Old May 13, 2013 | 11:37 AM
  #13  
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the greatest resource for miata info. Miata
thats a simple one though theres a little black box that says diagnostic on it, let the car warm up completely, jump pins ten and gnd, theres a screw on the side of the throttle body slowly adjust it up too ~850. remove the jumper, rev and make sure it falls back to where you set it if not repeat.
Old May 13, 2013 | 02:47 PM
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Welcome to the forum! Sorry I'm late to the party.

While you are jumping pins TEN and GND, put a timing light on the crank and make sure the timing mark lines up with the timing notch on the timing cover (marked 0 and 10). When TEN and GND are jumpered it locks timing at 10 degrees and you can verify timing at that point. If it is a little off, you can loosen the cam angle sensor located on the rear of the exhaust cam and rotate it to adjust. Adding 5 degrees to the base timing won't hurt anything and will make the car a little peppier. Above 17 or 18 degrees you will get a little pre-ignition, so don't go too far.

As for rattles, check the upper shock mount bushings, and the sway bar bushings if you think it is suspension.

My car is a '96, too, so if you need any parts I might have something extra laying around. I arrived at the Miata by way of Austin Healey Sprites and a long gone Triumph GT6+ so I understand the affinity for lightweight cars. And to reiterate what RTM said above, these cars are extraordinarily reliable with only rudimentary maintenance.
Old May 15, 2013 | 11:06 AM
  #15  
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Thanks for the info folks. I had already been thinking of advancing the cam about 5° or so. Probably gonna start on the body pretty soon. Did find loose shock mounts. Also went ahead and installed a Pioneer unit with bluetooth and ipod plug ins. Daughter is rocking with the hands free now!
Old May 15, 2013 | 11:50 AM
  #16  
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i love having the bluetooth connection in the car, i wish my dd had it to be honest. but sound quality in the dd will always be better than the miata so i will take the trade off.
Old May 15, 2013 | 07:11 PM
  #17  
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Advancing the cam is not something I suggested. Advancing the spark timing is a better idea. It was probably a typo on your part.
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