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auto shutdown #784059 01/28/07 05:08 PM
Anonymous
Unregistered
i have 94 yj 2.5 when it is cold outside the thing does not like to start. i notice the check engine light does not come on for a min or so as soon as the light come on it start right up. the colder it is the longer it take the light to come on. i think it has something to do with the autoshutdown but i cant find any info on it PLAESE HELP matts <img src="/forums/images/graemlins/scared.gif" alt="" /> <img src="/forums/images/graemlins/confused.gif" alt="" />

From the Off-Road World
Re: auto shutdown #784060 01/28/07 05:13 PM
Joined: Oct 2003
Posts: 7,768
BigJim Offline
Web Wheeler
Try turning the key to RUN for 10 seconds before hittnig the start position...see what THAT does. Might be slow first fuel delivery from bleed back..
Big JIm <img src="/forums/images/graemlins/pfft.gif" alt="" />


professional bovine relocation specialist
Re: auto shutdown [Re: BigJim] #784061 01/28/07 05:22 PM
Anonymous
Unregistered
tried that i turn on the key leave it for a bit any where form a few second to severl mins then the check engine light come on and i hear the fuel pump and it will start right up i dont even turn the engine over til i see the check engine light come on. no light no start matts

Re: auto shutdown #784062 01/29/07 08:13 AM
Joined: Jul 2006
Posts: 278
C
cjensen Offline
Mudrunner
Might it possibly be a battery, with dirty connections, bad cell, if aclutch could be a dirty safety switch connection or a ground that is loose?
<img src="/forums/images/graemlins/rolleyes.gif" alt="" />
C.

Re: auto shutdown [Re: cjensen] #784063 01/29/07 07:29 PM
Anonymous
Unregistered
new battery, 5 speed, no safty switch. i have checked all the connection i can think of the only thiing i can think of, is maybe the O2 senser. i am lost. matt

Re: auto shutdown #784064 01/29/07 08:29 PM
Joined: Dec 2003
Posts: 1,056
valleycat Offline
Body Damage is Cool
bad ignition switch? have you tried wiggling the key around?

Re: auto shutdown [Re: valleycat] #784065 01/29/07 09:06 PM
Anonymous
Unregistered
tried that i get power to everything else

Re: auto shutdown #784066 01/29/07 10:06 PM
Joined: Nov 2006
Posts: 60
R
RalkClimber Offline
Getting the Wheeling Fever
New Crank position sensor??


Ralk
'97 Jeep Wrangler 2.5L 105k Miles
Recent Replacements: Cam Shaft, Lifters, Push Rods, Distributor, Dist. Cap/button, Plugs, Oil Pump, Oil Sending Unit, Timing Chain/sprokets, and all associated gaskets.
Re: auto shutdown [Re: RalkClimber] #784067 01/29/07 10:30 PM
Joined: Oct 2003
Posts: 7,768
BigJim Offline
Web Wheeler
MAtt lets go again here. I am confused. Does the thing start and run or not? Does the check light come on and stay on or go off?
If it runs good and the light stays on it could be very simple..an air cleaner?
Big JIm <img src="/forums/images/graemlins/pfft.gif" alt="" />


professional bovine relocation specialist
Re: auto shutdown [Re: BigJim] #784068 01/30/07 01:19 AM
Anonymous
Unregistered
ok it starts/ runs normal when the temp out side is above 40. when it is cold below 40 when you turn the key on, not to start, the check engine light does not come on. if you crank on it it will not start if you wait for the check engine light it will fire right up. the colder it gets outside the longer it take for the light to come on. i think it has something to do with the auto shutdown. if i have someone turn the key to on while i am under the hood i can hear and feel the auto shutdown relay trip and the fuel pump prime relay trip, in that order, and the light comes on at the same time as the first relay trips. i have checked all connection i can think of, switched relays around nothing seems to make a differce. i cant find a good wiring diagram. i am thinking it might have something to do with the heated o2 sensor but i am not sure enough to get a new sensor.

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