Question about 1988 Nissan 300ZX

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I have a 1988 Nissan 300zx turbo, automatic transmission. When the problems began it would run great for about 30 minutes, then develop what felt like a miss. This would progressively get worse for about 15 more minutes, then the car would die. It will immediately start back and might run for another block or maybe only a few feet and die again. It seems like this even gets worse. The speedometer seemed to work intermittently also. Now it seems like if I get in the car and if the speedometer registers 0 mph, the car will start cutting out fairly soon. If I get in the car and the speedometer sweeps all the way over past 140 mph, it will run for about the 30 minutes before it starts missing and cutting out. One time I was driving it and it was missing terrible. The speedometer came back around and started reflecting the correct speed and the car smoothed out and ran perfectly for 4 hours. The next day it was back to running bad. I have replaced the fuel filter, fuel pump, distributor, coil, power transister and probably some other things I have forgotten. Can anyone help me out. I was going to change the speed sensor, but I cannot find where it is located. There is a speedometer pinion on the back of the transmission, but I understand there is also a speed sensor. I have 4 different manuals and neither show where it is or how to replace it. Help please!! Thank you

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have you tried changing the carburator

Posted on Jul 29, 2008

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SOURCE: 85 nissan 300zx turbo

alternator and mass air flow meter.
see my solution above.....
h

Posted on Nov 03, 2008

emissionwiz
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Get to a Nissan repair shop ASAP!

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Posted on Aug 09, 2011

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1 Answer

1have a 92 300zx with a bad automatic .and it came with a 92 twin turbo automatic will it work in my non turbo car


What is a twin turbo automatic? are you talking about the engine or the transmission, what is bad and what are you trying to find out will fit?

Nov 17, 2012 | 1992 Nissan 300ZX

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Nissan 300zx transmission replacement


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May 09, 2010 | 1991 Nissan 300ZX

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what engine do you want? you can swap what ever you want. 3.5z motor? they have done it in cali.

Mar 06, 2010 | 1988 Nissan 300ZX

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How to change flywheel on 1990 300zx non turbo?


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Sep 02, 2009 | 1990 Nissan 300ZX

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Need any spec sheet you have. Diagrams for the motor where parts are, wiring diagrams etc. Or help with why my car is only running 4 cylinders. Also develops a tick when idling, and warms up.


http://www.300zx-twinturbo.com/cgi-bin/manual.cgi

nissan 300zx online manual
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Apr 21, 2009 | 1990 Nissan 300ZX

1 Answer

Performance


a new car? I"M KIDDING!!! Haha! I'm sorry... I am a certified Nissan Scope Technician with over 10 years in a Nissan dealership.

These cars were kinda built "doggy" due to emissions regulations out at the time and it's a heavy car for what it is...

The first thing I would do is put a bigger turbo with a front mount intercooler and larger fuel injectors on this vehicle for more performance. The block is pretty much bullet proof to upwards of 350 horses...

I've built one of these cars that runs 10.50's in the quarter mile at 120+/- MPH...

Oct 25, 2008 | 1988 Nissan 300ZX

3 Answers

1990 nissan 300zx


I assume this is an automatic transmission. Is it a twin turbo or a non-turbo model? It sounds like you've lost fourth gear and are stuck in 3rd - those RPM would be about right. If you can provide more information, it will probably help in the diagnosis.

Jun 10, 2008 | 1990 Nissan 300ZX

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