Current of the Fuel Pump

[thundercat]

My car is a Pontiac Montana 2003. Just start the engine if I push the throttle pedal, then when I release stops it

I suspect of low fuel pressure but I not have a fuel pressure gauge. Fuel filter and fuel pressure regulator are almost new, the pressure at vacuum hose of the fuel pressure regulator is in nominal range

I temporary removed the fuel pump fuse, and checked current in it:

At 2000 rpm is 4.68 A
At 1000 rpm is 4.55 A

Please somebody could comment me on these current levels. Thanks

 

[melsg5]

are you measuring volts V or amps A?
fuel pumps use 12+ volts V
rent a fuel pressure tester.
do you have a check engine light on?

 

[thundercat]

Both, 13.9 volts and 4.6 amps average

No unusual light engine, no new fail codes

I would like to know if this 4.6 amps is out of range for indicate a failed fuel pump

 

[melsg5]

I have never seen anybody check amps on a fuel pump.
You appear to be testing on a running engine to account for a 13.9 volt reading.
You need to run a fuel pressure test.
You state no "new" fail codes, does that mean you still have old fail codes?
You may have a throttle position sensor issue or an idle air control issue.

______________________________

 

[thundercat]

I lost time checking every where but IAC because is almost new brought around 3 years ago at local store A.......ne with "warranty for life". When remove it show plunger all extended (means closed passage of air) and deformed spring

I claimed for back my money and buy another one better brand, but they just changed it by other new same brand Duralast

 

[melsg5]

Hope the new IAC solves your problem.

 

[thundercat]

Solved thanks. I drove since yesterday and works normal

A spare part with "warranty for life" just mean that seller change for a new one every time broke. No real warrant free of fail

Conclusion: When making a diagnosis it will be necessary to consider, as possible failed, these "pearls with warranty for life" inclusive if they are almost new