Skip the auto shop - Our mechanics make house calls

Q: I hear the fuel pump coming on but sometimes it won't start

asked by on

If I can hear the fuel pump coming on then that's not the problem right?

A: Just because you hear the fuel pump run doe...

Just because you hear the fuel pump run does not mean it is pumping the correct pressure to the injection system. If the pressure is real low or the filter is plugged solid, then the pump may not get enough fuel to the fuel rail. The only way to know is to test the fuel pressure at the fuel rail test port. When you are having the no-start, the engine should be checked for fuel pressure and spark to the spark plugs. On your Jeep, the most common problem is the crankshaft sensor or the fuel pump being bad. If you need help, then contact a mechanic to come and help diagnose the starting problem.

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: Engine misfiring - 2003 Santro Xing

Hey there. The problem with a misfire is going to involve the spark plugs or spark getting to the plugs. If the engine has no spark problems, then a fuel-related issue may be you got water in the fuel or...

Q: Car overheats; could be thermostat housing

With the vehicle overheating I would advise caution as overheating the vehicle can cause extensive damage if left unchecked. A stuck closed thermostat along with coolant leaks are among the most common causes of overheating. A qualified technician, such as...

Q: Screeching when pressing clutch pedal in first and reverse

Hello! Your description sounds exactly like the symptoms of a bad throw out bearing or clutch. The clutch and throwout bearing usually go bad around the same time. That is why most clutch kits come with a new throw out...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.