20 Most Recent 1987 Nissan 300ZX - Page 8 Questions & Answers

Check plug behind dash is not faulty

some nissans have a rubber plug on the metal part of the brake pedal look under the dash where the the pedal arm meets the brake light switch if there is a hole ther the plug has fallen out to make sure find the brake switch and manually push the plunger on the switch in have an assitant see if the brake lights go off if they do you will need to replace the rubber insert there will be a hole in the brake pedal arm where it goes

I would think that the brake switch which is connected to the brake pedal might be damaged, causing it to always have contact. They are usually not very expensive. Please rate this if it helps. Thanks.

Does it have a Neutral Start switch? The manual transmission models have a clutch interlock switch connected to the clutch pedal.Check it for operation.

check the fuseble link.
you can measure it, and make sure the contact are clean and secured.
the other thing is the check the ignition switch, make sure you have 12v going to the switch.
check thermo switch on top of the block.

chk charging noltage at battery posts. should be in 13.6 to14.2.. Is charging good at 13.8. If thar's good, your battery is not.. Your alternator won't last too long with a bad battery. good luck

Get the multi switch checked, as you have checked almost every thing.

Let me know if you need further question

Thanks
Kevin

Dear garrejose: The 300ZX uses a 2 fuse system to operate the headlights. You can find some with fuses in the fuse box ans ome with fusible links. On the right hand inner fender of the engine compartment there are some fusible links just forward of the battery that are located in a black box which is right near the strut tower. Open the box and you will see red wires connected to a green connector at one end and the wires separate on the other end with female spade connectors.They wires may appear intact, but remove one wire at a time from the end which has the spade connector and pull it lightly like you are stretching the wire. If it stretches and breaks like it had been cut inside, the fuse has been blown. Do the same fp the other side. I believe there are two of these green fuses in this box along with one which has a larger black wire. You will also find on the right side of the engine compartment near the front, a black relay box with a bunch of relays in it.The Box cover is labeled as to the location of the headlight relay. Depending on the production date you will find the following relay.
Before 9/86 a 5 pin (blade) relay with a black plastic case made by Jidco, although you could find a yellow one made by Niles (Hiatchi) on some Z's. The part number for this relay is 25230-C996A
After 9/86 it is a 6 pin(blade) relay with a brown plastic case, made by Jiden or Jidco. The part number for this one is 25230-7996A. Next, on some headlight switches, they had two sets of points.
One set served each side of the car. DON'T forget to check the grounds! My son, best friend and I race Nissan 300Z's. You can see a little footage of our racing on Google Video, under "Flying Pigs racing, how we got there". Why the name? It will be explained in the video. My suggestions "Should solve your problem. OH! by the way, I hope you didn't miss the obviios>>>>>The head light bulb?
The harness? Iin my career as a Nissan tech, which spans back as far as 1968, I have found not a single 300ZX with a headlight problem related to the harness unless the car had been wrecked,
Good luck. PS: I am new to this site and looking for people to write back, if I have solved their problems, so I can improve my rating. Help me out if I have helped you. OK?

you may have a weak clutch master cylinder

the first one towards engine is power steering then alternator and water pump are one belt then ac belt

you have two different problems. first your gauge may have a bad ground or bad sending unit . try fuel injector cleaner as they may be gloged for hesitation .

First, I am guessing the you are referring to the transmission it self as a module,.Am I correct? Your description sounds like the transmission was limited to 3rd, 4th 5th and reverse and ye had no means of getting 1st and 2nd. In having to be towed in order to get going, would indicated that if you tried to get going on your own, you would have to slip the hell out of the clutch.
One other thought which crossed my mind, is that you changed the clutch at the time you changed the transmission. If so, if the clutch disc id put in backwards, you will have a hell of a time driving the car. Especially at slow speeds. The clunk in all likely hood was the center of the disc coming apart.
The more I think about it the more I feel this is your problem.
You description is almost a classic symptom of a disc installed backwards.
Let me know if my solution was correct. This room would benefit greatly from this answer.
I am new to the Fixya group, and need help getting up in the scores. Your writing in will help. GOOD LUCK

It could be starter or if your lights in the das dont work your ing is bad

try checking the headlamp sensor mounted on rt front apron behind relay box . this runs all lights .

I would check for a blown fuse there should be one just for the fuel pump. If the fuse is good I would look for a bad or lose wire.

if car is automatic, try starting in 'N" , locate starter motor and tap it hard wile turning key to start, if cr starts after, needs new starter, look if lights and instruments come on when turning key, try to start car from starter, also key problem

When you tested the voltage they mean basically nothing without a load. No automobile fan will run at 1/2 a volt. Put the blower back into the circuit and retest the voltage. If you did indeed check with the blower in circuit, you do have a problem with the supply voltage. I would need to know what make, model and year to tell you more. As a temporary fix, you can rig a switch to the blower to supply 12 volts directly to it. It will run on high whenever you have it on, but it will work until you can trace back to where the problem is.

I assume that the clutch pedal is going all the way to the floor... First have you checked the reservoir?? or has it been filled lately???. If there is signs of fluid leaking then replace it , or if it has been messed with lately possible air in system and it can be bleed....But chances are if you think its shot it probably is...It is fairly easy to replace just make sure you flush fluid to insure no particles or water can have an adverse affect on new slave cylinder ...and once installed (2 bolts and 1 hydraulic line..) make sure it is bleed properly....Remember its a lot easier to replace the slave cylinder than to replace a clutch due to premature wear from faulty installation....Good Luck

Pull headlight knob off, You have to pry the panel off with flathead screwdriver, then you will have access to the switch.