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  #1  
Old 02-05-2012, 01:55 AM
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Damn jeep is throwing codes!!

On my way home tonight my jeep almost stalled and misfired . I ran the codes and came up with :

P300-random cylinder misfire
P335-crankshaft position circut
P339-crankshaft position circut intermittent


any ideas? Bad Crankshaft position sensor?
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  #2  
Old 02-05-2012, 01:24 PM
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Re: Damn jeep is throwing codes!!

Tried clearing the codes but it came right back along with some nasty bucking and hesitation . Got it home and the thing took multiple times to start. I had a extra crank sensor on another 5.7 motor and swapped it over and cleared the codes. Everything seems fine now . I like how there is a hole in the engine skid plate so u can change the sensor
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  #3  
Old 02-05-2012, 11:36 PM
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Re: Damn jeep is throwing codes!!

Glad things were sorted out...hopefully next time we can post a reply before you get it solved yourself!
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Old 02-07-2012, 08:01 PM
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Re: Damn jeep is throwing codes!!

hey u think that would be the same problem on a 3.7 ?
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Old 02-07-2012, 08:56 PM
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Re: Damn jeep is throwing codes!!

Crank sensor. $40something quick fix.

1 bolt, 1 plug, that's it.

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Old 02-07-2012, 08:58 PM
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Re: Damn jeep is throwing codes!!

Quote:
Originally Posted by Stillchi View Post
hey u think that would be the same problem on a 3.7 ?
Yep. I had to replace mine. I couldn't get over 10 mph without bucking/surging.
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Old 02-08-2012, 04:40 PM
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Re: Damn jeep is throwing codes!!

cool cause i was thinking it may have been the fuel injector. cause my codes were for cylinder 3 and and not a bad crank code if u can read my post 3.7 misfire . i just got it back from a shop today that couldnt figure it out . tryin to avoid the dealer tho
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Old 02-08-2012, 04:46 PM
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Re: Damn jeep is throwing codes!!

There is also a cam sensor.
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Old 02-15-2012, 04:11 PM
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Re: Damn jeep is throwing codes!!

how would u figure out if it was cam or crank sensor w/o code?
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Old 02-15-2012, 04:18 PM
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Re: Damn jeep is throwing codes!!

Quote:
Originally Posted by Stillchi View Post
how would u figure out if it was cam or crank sensor w/o code?
You've tried everything else. It wouldn't hurt to try the cam and crank sensors.
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Old 02-16-2012, 12:54 PM
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Re: Damn jeep is throwing codes!!

yeah i think i eventually will thanx anyway !
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