Q: Fuel rail pressure sensor has failed.

asked by on March 02, 2017

My local mechanic in this small Iowa town of less than 1,000 pop. has found the fuel rail pressure sensor to be bad in our Sonata. He's ordered a new one from a Hyundai dealer that is an hour drive away but it's not expected to get to the dealer until tomorrow. My mechanic says when he disconnected the sensor the car started and ran fine, which was good to know, since he can now get it into and out of his bay without pushing it. Question: Is it okay to drive the car until the new sensor arrives? Or might driving it now do damage to the engine?

My car has 66000 miles.
My car has an automatic transmission.

Without knowing the reason the vehicle will start with the sensor disconnected then it would be advisable to not drive the vehicle without getting it repaired. The fuel pressure sensor is used to control the fuel pressure to the motor by changing fuel pump output pressure. Without the sensor hooked up the pump will run at a set speed and may cause engine to run at reduced power and throttle.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Can a defective catalytic converter cause clutch failure?

To answer your question, a catalytic converter cannot cause clutch failure. You have a series of independent failures, which is not very common for vehicles with less than 100,000 miles. I would take your 2013 Chevrolet Cruze back to the...

When staring the car cold and hot the cars engine squeaks for 1-2mins then stops. I do have a new belt on and still squeaks

If the belts are on correct and are tight enough then the only thing it could be is the crankshaft damper is slipping and would need to be checked for slippage. I suspect the belts are not tight enough and...

battery drain

The stereo would only be a problem if it draws so much power that it overwhelms the alternator, thus preventing the battery from being properly and consistently recharged. That would be unusual as most car stereos do not use a...

where is the camshaft position sensor located on a 2005 scion TC

Hi Manuel. Thanks for contacting us today. The camshaft position sensor is located on the driver side of the engine bay, attached to the side of the cylinder head. Since we can't attach images to show you the exact location,...

Does the engine have to be removed to replace the oil pan on my 2002 Chrysler PT Cruise?

No, the engine does not have to be removed to replace the oil pan gasket on your vehicle. However, two of the engine mounts need to be removed to get the pan off, so it's a good idea to support...

Car stalls when accelerating

Hi there. When a car has issues accelerating, it is usually caused by a restriction of fuel, the fuel system's inability to properly mix air to fuel or an exhaust leak / vacuum leak of some sort. It's a good...

my alarm went off when I opened door w/ key. Now it won't start. What can I do? Is there a time period it will start up again?

If you have a key fob, I would recommend locking and unlocking the doors with that to see if this resolves the issue. If you do not have a key fob, you can try to lock and unlock the doors...

Check engine light on flashes five times stays on

Hi there. If the same code is returning, check to see if the new pig tail is installed correctly. If the wires aren't in the right position, you will have the concern you're experiencing as it could be shorting the...

Engine turns over but won't start. Could it be a sensor and how do I check?

Hi there. There is a possibility that no power is being supplied from the ignition switch to the power distribution center fuse. The ASD relay fuse may have blown on the ground "control" side of ASD relay. Circuit tests need...

Related articles

How Long Does an Ambient Temperature Sensor (Switch) Last?
In In many late-model vehicles, the need to manually adjust heat and air conditioning has been eliminated. You can actually set your car’s computer to regulate the cooling and heating process based on the temperature at which you feel most...
The 5 Safest Used Cars You Can Buy For Under $20,000
The Subaru Legacy, Honda Accord, Ford Fusion, Chevy Volt, and the Volvo XC60 are five of the overall safest used cars you can buy for under $20,000.
What Sensors Make the ABS Work?
When When we are discussing ABS systems it is good to note the year and make of your vehicle because ABS systems have evolved quite a bit over the years, but you also have to know how the ABS system...