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-   -   5.7V8 545RFE Update / New downshift behavior ? (http://www.jeepgarage.org/f107/5-7v8-545rfe-update-new-downshift-behavior-25571.html)

vikingdave 07-11-2011 06:02 PM

5.7V8 545RFE Update / New downshift behavior ?
 
So I had TSB 18-035-11 flashed on my GC today. The shifts seem really smooth and overall the car just feels much more responsive and faster now.

Can someone with the 5.7 that has not had this flash done confirm something for me ? Now when I'm on the highway cruising at around 75MPH and I click the shifter one click to the left (downshift) a "5" shows up on my dash. I could swear that it used to say "6" when I did this at highway speeds in the past. I get an immediate downshift with an increase in RPMs on the first click to the left and a "5" is displayed. I just could swear that it use to show a "6".

Either way it's a little confusing, if this is a five speed with two different 2nd gears I would expect the first downshift to read "4" (going from 5th to 4th) so both old and new programming seem a little misleading. But, I could also swear that I'm actually getting six distinct useable gears rather than just different 2nd's for upshifts and downshifts. At 62MPH I'm getting 1,600RPMs in "D", and 2,000 in "5".

french_matt 07-11-2011 06:38 PM

Re: 5.7V8 545RFE Update / New downshift behavior ?
 
Have not had the TSB applied yet: when I manually click the shifter to the left, I'm in "5", not "6". Never seen "6" on the Jeep.

Did you notice any improvement regarding the AC? My AC's pretty lame: it's cool but not very cold.

Thanks
-Matt

nek121328 07-11-2011 07:31 PM

Re: 5.7V8 545RFE Update / New downshift behavior ?
 
It's 5 or up to D

jefferson.oz 07-12-2011 11:43 PM

Re: 5.7V8 545RFE Update / New downshift behavior ?
 
Quote:

Originally Posted by vikingdave (Post 445786)
So I had TSB 18-035-11 flashed on my GC today. The shifts seem really smooth and overall the car just feels much more responsive and faster now.

Can someone with the 5.7 that has not had this flash done confirm something for me ? Now when I'm on the highway cruising at around 75MPH and I click the shifter one click to the left (downshift) a "5" shows up on my dash. I could swear that it used to say "6" when I did this at highway speeds in the past. I get an immediate downshift with an increase in RPMs on the first click to the left and a "5" is displayed. I just could swear that it use to show a "6".

Either way it's a little confusing, if this is a five speed with two different 2nd gears I would expect the first downshift to read "4" (going from 5th to 4th) so both old and new programming seem a little misleading. But, I could also swear that I'm actually getting six distinct useable gears rather than just different 2nd's for upshifts and downshifts. At 62MPH I'm getting 1,600RPMs in "D", and 2,000 in "5".

Once you shift the lever to the left you still have 5 gears all at a lower ratio, I was way impressed with this as it handy for towing heavy loads etc... but especially handy for hosing other suvs at the traffic lights!


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