there was a recall on the power transistor that controlls spark. it would make it stall out and it would cool down and work again
SERVICE CAMPAIGN BULLETIN P4120
Date:October 20, 1994
VOLUNTARY SERVICE CAMPAIGN ON 1990-93 300ZX IGNITION POWER TRANSISTOR UNIT
APPLIED MODEL All 1990-1993 300ZX (Z32)
AFFECTED VIN RANGE:
An electrical problem in the power transistor unit may cause poor driveability and/or rough idle. A counter measure power transistor unit has been developed to resolve this incident.
It is the dealer's responsibility to check each vehicle within the range of this campaign which for any reason enters the service department. This includes vehicles purchased from private parties or presented by transient (tourist) owners and vehicles in dealer inventory.
The engine should be "OFF", the parking brake applied and the transmission placed in park (if applicable) before beginning service on the vehicle.
Dear Nissan 300ZX Owner:
As a result of our continuous monitoring efforts, Nissan has determined that the power transistor unit in the ignition system may have an electrical problem that could cause poor driveability and/or rough idle in your 300ZX.
To ensure that you are not inconvenienced by an occurrence of this incident, please make an appointment with your Nissan dealer today. He will replace the power transistor at no charge to you. The repair will take less than an hour, but your dealer's schedule may require that you leave your 300ZX for a greater length of time.
Please bring this notice with you when you keep your service appointment. Instructions have been sent to your Nissan Dealer. If the Dealer fails, or is unable to make the necessary repairs at no charge to you, you may contact the National Consumer Affairs Office, Nissan Motor Corporation U.S.A. at P.O. Box 191, Gardena, CaliforniaNNN-NN-NNNN The toll-free telephone number is XXXXX 1 [1-800-647-7261]. If you reside in Hawaii, please call(NNN) NNN-NNNN
We apologize for any inconvenience this may cause, but we want to ensure that your 300ZX does not experience this incident. Your long term satisfaction with your Nissan is of the utmost importance to us.