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What the function of the Auto Shut Down Relay. Can it be bypassed

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 94 dakota 5.2 - no spark - auto shut down relay not energized

Hello this is a feature to stop the engine and exhaust system from filling up with gas when spark is lost! years ago fuel would be delivered as usual and you Eng and converter would be full of gas real hazard back then!!!!now they built into computer when spark fails fuel automatically shuts off safety feature??? or not? so i would start to test coil this is a good place to start and if you have engine light on plug in OBD 2 scan tool to retreve the fault hope this helps you out and if you do not have a proper spark tester tool i would invest in one most auto parts stores usually carry them!!! $15-$30 dollars usually.John

Posted on Feb 15, 2009

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SOURCE: I Have a 94 cherokee

If you hear relays clicking sometimes and the jeep won't start, at those times, is the check engine light illuminated on the dash, or not? If no check engine light is on the dash, at times when the jeep won't start, your ecu is in need of repairs. The ecu sends power to the ignition and fuel relays and when the ecu starts to malfunction, the relays usually start clicking.

Posted on May 11, 2011

DNO36
  • 40 Answers

SOURCE: auto shut down relay is clickin does it have a reset button an were is it

Please post: Year, Make, Model & Engine to help us help you.

I do not know of a 'reset button'

I had this same symptom happen when the van got hot where it would not restart. I had a solenoid going bad.

I was able to 'rap' on the solenoid to let it engage, get it started and back home so I could replace.

GL

Posted on Jan 01, 2012

  • 627 Answers

SOURCE: how do i fix a code po688? 2004 pacifica, no crank, no start, dash lights are on with key on the on position

Weak battery- Low voltage while cranking
- Faulty Engine Control Module (ECM) relay
- Blown ECM fuse
- Faulty ECM
- ECM harness is open or shorted
- ECM circuit poor electrical connection

Posted on Jan 20, 2015

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1 Answer

R these the relay for the pcm and tcm on a 2006 pt cruiser


the left is the starter relay and the right is the auto shut down relay
the pcm relay is the auto shut down relay and the pcm relay is located in the fuse box on the engine comparment

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How do you bypass the auto shut down?


What make , model an year vehicle do you have ?

Mar 30, 2015 | Cars & Trucks

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How do i fix a code po688? 2004 pacifica, no crank, no start, dash lights are on with key on the on position


Weak battery- Low voltage while cranking
- Faulty Engine Control Module (ECM) relay
- Blown ECM fuse
- Faulty ECM
- ECM harness is open or shorted
- ECM circuit poor electrical connection

Jan 20, 2015 | 2004 Chrysler Pacifica

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Where is the auto shut down relay on a 1999 dodge durango


The auto shut down relay is located in the fuse box that is located under the hood of the Durango. The auto shut down relay should be marked for location on the underside of the lid of the fuse box.

May 17, 2014 | 1999 Dodge Durango

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My 91 jeep wrangler 4.0 will shut down all power at all speeds from idle to driving on the interstate. I jumped out the auto shutdown relay and it works fine but i cannot find the auto shutdown switch to...


There is no switch. The relay gets a signal from the computer. If there is no signal from the crank position sensor the computer will not close the relay. If it runs with the relay bypassed, chances are good that the relay itself is bad.

Feb 06, 2011 | Jeep Wrangler Cars & Trucks

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2000 dodge van 5.2 auto shutdown relay tunes van off as i am driv


the auto shut down relay is not like a fuse that can shut the engine off the name it has actually has not much to do with its function.. the relay is controlled by the computer .. its main function is to stop run-on and turns off o2 heaters power to coil and injectors if you had the key in the run position and engine not running your battery would dies faster than a drive in movie.. but anyway if your stalling and think its the relay failing just swap it with another one that looks the same from the PDC.. what you may have is a bad fuel pump or even a crank sensor have you had it scanned for codes? sometimes but not always you may have a code for lean upstream o2 if the pump is failing but not always.. and for the crank sensor you may have a crank shaft position sensor performance or cam/crank sensor code ..

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Auto shut down relay


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