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ntate2 09-04-2012 01:58 PM

5.7 Hemi transmission??
I have a 2005 5.7L Hemi Jeep Grand Cherokee, limited, with a tow package. It has 91k miles. I put a cold air intake, diablo catch can, and diablo predator sport tuner on it. Shortly after installing the tuner it started giving me some trouble. When I would shift into drive, you wouldn't feel anything, and then when I let my foot off the brake, the car wouldn't move. Once you gave it gas it would act fine. It only does this 2 or 3 times a week. Other than this everything seems fine. There was one time that the vehicle did this and it threw a check engine light. I do not know what the code was tho. When it threw the code the vehicle said it was in 3rd gear and you had to get to about 3000 rpm before it would move forward. I then took the sport tuner off and put the stock back on. Any ideas on what could be causing this?

2005JGC 09-04-2012 02:03 PM

Re: 5.7 Hemi transmission??
Get a transmission service, your problem sounds like a common loss of prime issue due to a faulty filter. be it split or allowing drainback.

ChrisWk 09-04-2012 02:04 PM

Re: 5.7 Hemi transmission??
unplug the battery neg plug it back it should work. mds needs to reset.

2005JGC 09-04-2012 04:55 PM

Not a battery disconnect issue, the cel was probably a loss of prime code. Common failure on the 545RFE trans.

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ntate2 09-05-2012 07:35 AM

Re: 5.7 Hemi transmission??
So is there any way to fix it or is it just not a big deal?

2005JGC 09-05-2012 10:42 AM

I would get a trans service done, its pretty hard on the trans to run dry for any amount if time... This mst not be your problem but its a berti good place to start.

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ntate2 09-06-2012 08:02 AM

Re: 5.7 Hemi transmission??
Thanks for the info

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