Skip the auto shop - Our mechanics make house calls

Q: Engine starts but dies after 3-5 seconds

asked by on

My automatic isuzu trooper suddenly wont start anymore. This is the first time this happens to me, when i start the engine it cranks longer than the usual, it took atleast 3 seconds before it fully starts but after about 3-5 seconds the engine dies even stepping on the gas. I tried it several times but the same output. I just replaced my battery 2 months ago. The mechanic says the problem is its rail pressure sensor and valve. Just want to confirm it. Your answer is much appreciated.

My car has 188250 miles.
My car has an automatic transmission.

A: Hi there. This can be caused by a fuel rail...

Hi there. This can be caused by a fuel rail pressure sensor, but most of the time when this code comes up it is because the fuel pump has failed. A fuel pump will fail much more often then this sensor. I usually start by testing the fuel pressure. If there is none then I test to make sure that the pump is getting voltage. If it is then the pump is bad. If there is fuel pressure then I test the sensor to see if it read correctly. If not then it gets replaced. If it does then I check the next most common sensor which is the crankshaft position sensor. If you are planning on having this no start problem checked, consider YourMechanic, as a certified mechanic will come to your home or office to diagnose and repair this.

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: The car is cranking but will not start. Have already checked fuel switch, alternator, fuel pump among other stuff.

There are several possibilities for the starting issue on your 1999 Ford Taurus. You need to have the vehicle scanned to see if you are getting camshaft and crankshaft sensor signals. One of these sensors are most likely not working...

Q: Car overheating, rust-like residue leaking out

The engine may have a head gasket leak. The residue you see is from the combustion from the engine getting into the radiator cooling system. A combustion test done on the radiator should be done to see if you have...

Q: Needing help with compatible parts. 2002 Jeep Liberty

The best place to find the answer to this question is at an auto parts store. You will need to find someone willing to help you identify substitute compressors. I am assuming you are wanting to use a used unit...

Related articles

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 Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...