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.

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
  1. Home
  2. Questions
  3. 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

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: Car will not drive over 30 mph

The engines computer could be in a “limp” mode. It is a reduced power mode because of a trouble code(s) set in the computer. It does this to prevent further damage. Any type of misfire code, a major sensor, or...

Q: Car hesitation from stop to acceleration

Hi, thanks for writing in. Prior to further diagnostics you should install the spark plugs that are referred to in the factory service manual and/or obtain the plugs from a GM dealer. Installing alternative aftermarket plugs with different gaps, materials,...

Q: Ignition problems

Hello. If you are losing battery power to particular circuits then most of the time this is caused by a bad ground connection, a failing battery cable, or it may be a bad transmission position sensor. It is common for...

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...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...