Skip the auto shop - Our mechanics make house calls

Q: Turn ignition on fuel pressure goes to 60 lbs two seconds and fuel pump relay clicks pressure drops 5 lbs then slowly drops to 0to

asked by on

I replaced fuel pump and fuel pressure regulator and cleaned injectors still no start condition no fuel delivery when do fuel pressure test it drops exactly 5 lbs then gradually drops AL the way down when the pump relay clicks two seconds after ignition turned to on position

My car has 165 miles.
My car has an automatic transmission.

A: It sounds like this fault may have more goi...

It sounds like this fault may have more going on than just the fuel delivery issue. The vehicles ECU will command the fuel pump to turn on normally when a vehicle is started. If the car only primes for the second when the key is turned, then for some reason the ECU may be pulling the fuel.

This can happen due to a failure with various sensors or ignition component, such as the oil sender, ignition switch, ECT sensor, or various other failed sensors. If the car has codes stored in the ECU it may lead to more information as to what is going on. A qualified technician will be able to diagnose this fault no start fault and perform any repairs required.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: would not stay started

Hello. Most of the time this is caused by a voltage issue. If the battery was low or if there was a bad connection at the battery then this can occur. More than likely they charged the battery and checked...

Q: When vehicle is in the prosses of shifting there is a vibration. But it runs fine after shifting. What could that be?

Hello, thanks for writing in. From what you describe it would appear that there is more than one issue. Vibrations during shifting can be caused by several things. The first thing I would do is check that the transmission fluid...

Q: Aftermarket radio broken, installing new one

Most of the aftermarket stereos out on the market today are primarily plug and play. Just be sure to make certain the stereo is properly grounded and the correct power source is used when plugging it in. If you run...

Related articles

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...