Skip the auto shop - Our mechanics make house calls

Q: RPM's drop quickly and engine dies - 1996 Nissan 300ZX

asked by on

My car is having RPM problems. It starts fine and it also runs just fine, but when I go above around 50 MPH and then engage the clutch, the car quickly wants to drop RPM's. It will jump between 300-700 RPM's and then the engine dies as if no gas is applied. What is causing this and what can I do to solve this problem?

A: I'm trying my best to follow.. Normally...

I'm trying my best to follow.. Normally you will engage the clutch as you are shifting gears, as pressing the clutch is the same (essentially) as putting the stick into neutral. So if I am following this correctly, the car is not idleing correctly / it is not holding its RPMS well enough to not sputter out and die. This could be a lot of possible problems. Idleing issues tend to be evap system related or vacuum leaks. See if it is throwing any codes that wouldn't cause a CEL. If there are no codes and you are still constantly having idleing issues, you may be able to add a very small adjustment to a screw on the throttle body to increase the idle RPM.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Which sensors are most important for monitoring and improving the engine’s performance?

The way modern electronic engine control systems are designed, all of the sensors are important but some are more crucial to the vehicle than others. For example, if the engine electronic control unit (ECU) loses the input from the coolant...

Q: Poor acceleration and low RPMs, engine bogs down until turbo kicks in.

I would enlist the help of a diesel technician to inspect your engine for any faults as well as the turbo. Any hoses that may have come disconnected or if any sensors have gone bad this can affect your engines...

Q: Replaced slave cylinder, can't get clutch to pump up

It sounds like a couple of things could be going on here. First, there may be air in the slave cylinder and/or line which has to be bled out. Sometimes simply opening the bleeder and the slave master cylinder and...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.