Skip the auto shop - Our mechanics make house calls

Q: I change MAF & 02 sensors n now my truck won't even start

asked by on

I change MAF & 02 sensors n now my truck won't even start I put a lil of starting fluid n it starts fir a lil n dies out

A: A no start diagnostic would reveal the issu...

A no start diagnostic would reveal the issue. If you are able to get the engine to run momentarily by introducing "fuel" into the intake, in your case starter fluid, that would point toward the issue being fuel system related. If you have never changed the fuel filter, that is not a bad idea given the year of your vehicle and is harmless as it should be done anyway after so many years. Check to see if the fuel pump in the tank makes noise as the key is turned to the "on" position (pump should momentarily "whirr" as pressure develops; if no noise there is pump/pump circuit issue). Basically, during the diagnostic, fuel pressure would be tested but the fuel injectors themselves might have to be evaluated. If any diagnostic trouble codes have set and are downloadable that would help. It is also possible that something like a faulty temperature sensor could cause your issue if the PCM is getting a false "warm" engine signal when in fact the engine is cold. A consequence of such a false sensor output would be inadequate fuel is supplied on cold starts. If you desire that YourMechanic resolve the issue for you, please schedule a no-start diagnostic.

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: Stalling, misfiring, and erratic idle - 1995 Chevrolet K1500

Stalling and rough idling are usually an indication that the motor is not able to adjust to varying loads. The Manifold Absolute Pressure (MAP) sensor senses engine load and generates a signal that is proportional to the amount of vacuum...

Q: May be harmonic balancer pully.

Hello. I will help you relative to your question about operating a car without a harmonic balancer. Your supposition that damage could or will occur if you operate the car without a harmonic balancer is correct. If, however, you are...

Q: I need to get my speedometer fixed.

As most cars now have an electronic speedometer, the problem is most likely with the speed sensor in the transmission. Have a technician inspect your speedometer to determine if the gauge is bad or the sensor.

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...