Need Help?

1995 Nissan 300ZX Base 2dr Coupe Slicktop Manual

1995 Nissan 300ZX
Do you own this car?
Estimated Mileage
 Miles
Enter current mileage for most
accurate info about this vehicle


Track Your Service Records
Get Recall Alerts
Get Updated Value Estimates on Your Car.

back to question list

Ask the Community

Ask Our Auto Mechanics


April 11, 2012, 5:56 pm

Mark H
 

Question: Nissan 300zx fuel problem

Hi. I've been diagnosing fuel problem with my 1986 nissan 300zx. After tearing the car apart I've figured out I am not getting ground at pin 20 on the ecm, which is causing the fuel pump to not engage, and hence the fuel pump not to run (it does run for initial prime).
If I bypass and connect ground directly to the pump the car runs fine...
ECM is showing code 44 (all good), so seems like might be bad ECM?
I'm tempted to install permanant ground at the pump but would rather fix properly.
Suggestion?


April 16, 2012, 9:22 pm

Tyler O
Expert Mechanic

The ecm probably need to see some value to ground the pump relay. Usually this is in the airflow meter.

There also seems to be a "fuel pump control unit"


0/0 users found this helpful.

Ask our panel of certified auto mechanics a question. We pay for their advice so you don't have to



My Auto Score

See the free AutoCheck score

Meet The Experts
Kim Perrin
Kim Perrin is our resident mechanic here at DriverSide. Kim worked as…
Tyler Orr
Tyler Orr is an expert in German and Japanese cars and has been a mechanic …
Elizabeth Kriesten
Elizabeth Kriesten worked as an automotive technician for several years at Dodge…
Tips on Servicing

Car Brakes: How Do You Know When to Change Them?

By Zach Bowman For those who suffer a daily commute through heavy traffic, your vehicle's braking system can bring thousands of pounds of metal, plastic and empty Starbucks cups to a stop hundreds of times before you get to work. It goes without saying that these pieces wear out, but they do so slowly, meaning you may not notice they need attention until ...

Read more…