Question about 1996 Jeep Grand Cherokee

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1996 Jeep Grand Cherokee...Blowing ASD fuse

My jeep keeps blowin the auto-shutdown fuse which causes it to either stall or not start! When the fuse blows the fuel pump keeps running but none of the gauges work and it wont start...Any Ideas?

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My daughters jeep had the same problem. We fixed by finding the wires that run beside the manifold down under the car. The conduit that have the wires in it was worn away because of resting up against the manifold, causing the wires to short the system out. Once I replaced the conduit and taped the wires it has not shorted out again. By the way, the Jeep dealer couldn't find the problem.

Posted on Feb 24, 2009

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Just a guess but you likely have a short somewhere...start tracing the circut till you find a ground that shouldn't be there. Find out how many smaller fuses that circut serves and try to isolate it down from there!

Posted on Feb 22, 2009

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1 Answer

How do I stop my efi fuse from blowing repeatedly. Just changed the fuel pump and now that fuse keeps blowing.


What about your fuel rail regulator, which is in the tank with the fuel pump on some cars? Does it have a pressure switch/sensor that isn't telling the engine control module to shut the pump off when the rail pressure is obtained? If you turn the vehicle to on (not start) and the pump runs more than a couple seconds, like until the fuse blows, it could be either a stuck pump relay or worse, the fuel pump control signal. Pull the pump relay, add a new fuse and see if the pump runs with the key in the on position again, which it shouldn't. If it doesn't run, the issue is either the relay, or the control signal to the relay that is keeping the pump on all the time, causing the fuse to blow.

It sounds to me like the pressure is going to high and stalling or slowing the pump causing excessive current from the motor and blowing the fuse. If that's the case your old pump might not have been the problem. How's the fuel filter? That's in line with the fuel line to the fuel rail?

You don't have to answer the questions, just look into them for your own peace of mind.

Jan 23, 2016 | Cars & Trucks

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Diagnostic port on a 1994 jeep grand Cherokee limited v 8


Check the fuel filter,nozzles and clean the injector mouth

Nov 24, 2015 | 1994 Jeep Grand Cherokee

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Have a 2004 jeep Cherokee that has a p1389 code in


gee 1, last year of Cherokee is 2001, so you meant Grand right??????
gee2, wont start or stalls, no other symptoms????? just 1 DTC, no others using a real scan tool? that be first huh?
Geewise 3, what engine, wow, wrong car, no engine or country.?

the FSM covers this, and the ASD has 8 ways to trip off line'
UP TO 8 ways , just like old wonder bread had.

answering for 2004 GC, (i actually look it up in the real book)
not google butchered DTCs.
P means power train, 1 means factory codes.
a 3 coin toss lands...
2004 GC, vin N, 4.7L v8 automatic,


it reads. verbatim.
Trouble Code: P1389
No Auto Shutdown Relay Output Voltage To PCM
Number of Trips to Set Code: 1
  • Catastrophicmonitor failure.
Trouble Code Conditions:
Engine cranking; and the PCM did not detect any voltage on the ASD Relay Output circuit to the PCM during the CCM test.
Possible Causes:
  1. ASD relay connector is damaged, loose or shorted
  2. ASD relay output circuit is open between the relay and PCM
  3. ASD relay power circuit is open (test power from Fused B+)
  4. ASD relay is damaged or has failed
  5. PCM has failed (nah)


it means, to me.
  • the relay is unplugged
  • or fuse blown "fused B+" (a top reason, world wide)
  • the relay is bad.

my buds ASD page,

http://www.fixkick.com/Jeeps/ASD.html

Oct 20, 2014 | Jeep Cherokee Cars & Trucks

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Auto shutdown


the wire harness to the ecm is shorting out some where

Aug 11, 2013 | 1996 Jeep Grand Cherokee

1 Answer

Fuse for fuel pump keeps blowing


Normally fuse blows off if more current passes through it than what it is designed for.

Probably it is worth checking what original fuel pump fuse amps requirements and have the same installed.

Also check the relay if there is a relay set for the fuel pump.

Good luck

Jul 13, 2012 | 1992 Toyota Previa

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Fuel pump just stopped,ECU-I.G fuse burnt changed fuse , still don't hear pump,if line was blocked would pump shutdown?


FUEL PUMP MORE LIKELY WORN OUT SHORT OUT.BESURE REPLACE FUEL PUMP WIRES IF FUEL PUMP HAS TO BE REPLACED.CODE SCAN FOR ECU FAULT. IF FUEL FILTER STOPPED UP FUEL PUMP WILL SHORT OUT.

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I have chevy silverado 2003. When my fuel tank is low and the low level fuel light comes on, my pcm fuse blows and truck shuts off going down the freeway. I cant even turn the ignition over unit i...


yes i would say most likely it the fuel pump. it work harder wen u out of gas and may draw too much current blowin the fuse. i looked at wiring diagram and pcm fuse does feed the pump so my educated guess would be replace the fuel pump

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1996 jeep grand cherokee loredo V8 auto starts and drives short time later it stalls in no real pattern. fires right back up. sometimes you can hear the fuel pump and it starts fine, other...


it's in your auto start system. mine does the same thing. after it sets fot 5 mins. it starts. if it is a factory installed auto-start, have dealer check. if it was installed by someone else, theirs a problem with installation or wired wrong.

Oct 16, 2010 | 1996 Jeep Grand Cherokee

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