2010 jeep patriot, cranks, good spark, inj pulse, losing power at fuel pump

heyarn

Full Member
Joined
Sep 12, 2007
Messages
118
Points
16
Make
jeep
Model
patriot
Year
2010
Miles
120,000
Engine
2.4
engine cranks, fuel pump primes, then loses power to fuel pump, seems to fire up slightly, then just spins, i am looking for a wiring diagram for the fuel pump, thanks for any help.. i did allready look at the relays inside the front drivers side wheel well, they all look ok
 

grcauto

wrench
Joined
May 29, 2014
Messages
1,456
Points
48
Are you sure? Does it lose pressure on the gauge? What's the anti-theft doing?
 

nickb2

Wrench. Diagnostic Tech.
Joined
Nov 22, 2008
Messages
13,012
Points
83
Location
St-Hyacinthe, Quebec, Canada
Try a fuel pump relay bypass. If stays running not a Anti theft issue.

Basically, what I do is see if pcm is commanding and use fused jumper.

Another, if you have access to a bi directional scanner, activate and look at amp draw.

A classic on these Mopar is fuel pump. They failed very often. But one of the most overlooked things is bad grounds and corrosion in the power module itself.

As for wiring. I am not available for now. But I Will for sure try to get that to you shortly.
 
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