20 Most Recent 1991 Nissan 300ZX Questions & Answers

the ecu is located behind the passenger kick panel , there is a little window at the top of it which has 2 lights in it red and green, turn the key to the on position, do not start engine, push gas pedal all the way down then release, the lights will start blinking, for example if you get 3 green blinks and 2 red blinks that means code 32, 5 green and 1 red code 51, there is a list on the front of the ecu that tells you what each code means

Try the crankshaft sensor

IF YOU LOOK ON YOU TUBE THEY WILL SHOW YOU HOW

On all 300zx NA the speed sensor is on the passenger side of the transmission. There is portion called the adapter plate in the middle of the transmission when looking at the side profile. This plate is about an inch thick and seems to separate the transmission from the front main body to the rear housing. The speed sensor is just aft of this (towards the rear of the car). It is round smooth top with a set of wires coming out of it leading up to a brown plug (no sure if color changed for different years)

first here is the service manual http://www.300zx-twinturbo.com/cgi-bin/manual.cgi

next is the kick panel http://209.85.62.26/12640/0/upload/p979648.jpg

These should be right or very close .

High beam switch moat likely, have you checked relays and fuses?

According to OBD standards it should be reachable when you are sitting in the driver seat. Since it is made before 1997 it is a OBD1 not OBD2 connector.

no spark means you are not getting any fuel ck the pressuer on the fuel rail ,

What does not get power?

Is there a MIL on, what is the code if so. May very well be a coolant temp sensor or connector corroded.

I would check belt tension and then Idler pulley bearing..If still nothing check the A/C compressor clutch..

check throttle position sensor and throttle body