Need Help?

1992 Pontiac Firebird Base 2D Convertible

1992 Pontiac Firebird
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


October 11, 2012, 12:09 pm

TORI F
 

Question: WHAT ELSE COULD IT BE?

I RECIEVED A CAR FROM MY DAD AND I HAVE CHANGE THE SPARK PLUGS, FUEL FILTER, BATTERY, STARTER, AND THE THEROMSTAT ON THIS VEHICLE, AND IT STILL WILL NOT START WAS ELSE COULD BE WRONG WITH IT?


October 20, 2012, 7:40 am

Ron W
Expert Mechanic

May be the Crank Position Sensor is not working well.

It sends out the RPM signal to the PCM. If it is bad, there is no RPM signal, and the PCM will not command the injectors to fire. Easiest way to see if it works is to hook up a scantool and crank the engine. Monitor the datastream for RPM. If you see RPM then the sensor is working, if it reads zero RPM, then there is a problem with the Crank Position Sensor circuit.


0/1 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…