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Resources for the Repair and Maintenance of your 1990 Nissan 300ZX

1990 Nissan 300ZX

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1990 Nissan 300ZX Problems

Engine -- Verified

The fuel injectors can fail and cause drivability problems. Often there is no Check Engine light and the failures can be caused by corrosion of the connector, clogging beyond the point of cleaning, and/or internal failures.

Exhaust & Emissions -- Verified

The exhaust manifold often warps, breaking off the studs between the cylinder head and the exhaust manifold. The noise may be most noticeable when the engine is cold.

Exhaust & Emissions -- Verified

If the car is emitting blue smoke from the tail pipe, from burned oil, be sure both PCV valves are functioning properly prior to replacing the turbocharger.

Exhaust & Emissions -- Verified

If the vehicle fails the “State Smog Test” due to high emission readings, components in the pollution control system (air injection components) may have failed due to moisture and may need to be replaced.

1990 Nissan 300ZX Questions and Answers

kunta, 1990 Nissan 300ZX, Clinton, MD

heater vent that opens and close to allow heat in the interior of the car doesn't work. How do I replace it? Where can I find the part? Thanks

apaldapa, 1990 Nissan 300ZX, Tulare, CA

I have a 1990 Nissan 300zx N/A which hasa proble when i start up in the morn ing the car runs good but after running for abot 10 to 20 minutes the car loses power what could be the problem?

steffeydj, 1990 Nissan 300ZX, Marina Del Rey, CA

vehicle is a 1986 model (year not on drop-down menu) Vehicle failed CA smog test (test only) in CO 25 mph test, it was .64 (max .60) Within limits at 15mph test. Noticed that "engine CK ligh...

steffeydj, 1990 Nissan 300ZX, Marina Del Rey, CA

Does the oxygen sensor directly measure the amount of oxygen in the exhaust gases or is it a thermocouple type device that measeures exhaust gas tempatures and this information is then used to dete...

steffeydj, 1990 Nissan 300ZX, Marina Del Rey, CA

Answers to previous questions regarding this sensor and failing CO Test on the referenced vehicle proved very helpful. However, for future reference there is only one O2 sensor on this vehicle loc...

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