42RE Trans- starts off in second gear - JeepForum.com
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Unread 01-11-2013, 06:01 AM   #1
bc40ton
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1997 TJ Wrangler 
 
Join Date: Oct 2010
Location: Cape May
Posts: 60
42RE Trans- starts off in second gear

'99 ZJ was in limp mode, second gear only. Set a code: P1757 Governor Pressure Not Equal To Target At 15-20 PSI. Installed new gov solenoid and sensor. Got 2nd 3rd and 4th back but starts off in second unless manually shifted to 1st. Again threw P1757 code. Checked throttle valve(kickdown) and still no first. Any help would be appreciated! Thx.

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Unread 01-15-2013, 11:21 AM   #2
bc40ton
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Join Date: Oct 2010
Location: Cape May
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I need some help here. Anyone?
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Unread 01-15-2013, 06:57 PM   #3
neonhomer
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1996 ZJ 
 
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Location: Edgewater, FL, Florida
Posts: 441
Did you use Mopar sensors or parts house sensors? It's highly recommended to use the Mopar sensors. It would also help if you had a scan tool that could tell you the pressure data in real time.

Could also be a physical problem with the trans.
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[COLOR="Lime"][SIZE="5"]NeonHomer[/SIZE][/COLOR]
Mid-Florida Jeep Club - Member
1996 Jeep Grand Cherokee, 4.0L/42RE/242 - Rebuilt motor w/ Comp cam (4/12), 3.5" Junkyard F>R lift, 31x10.5.x15 M/T's, Spartan Locked D44a, TC & tank skids, F&R adj trackbars, V8 steering arms
Galaxy DX99V CB, 102" SS Whip, Yaesu FT-2900R 2m, Larsen 1/4w mag mount, Sony HU, Massive 3way - F Door, Pioneer 3way - R Doors, MB Quart ONX304 Subs (x2), Lanzar 1600w amp.

"No Matter Where You Go... There You Are."
"Oh me oh my a lovely day is dawning. Oh what a joy I didn't wake up dead. So I can go to work and then resume my yawning, and get my sleep on site instead of in my bed" - Daria Morgendorffer (with my twist)
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Unread 01-24-2013, 10:11 AM   #4
bc40ton
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1997 TJ Wrangler 
 
Join Date: Oct 2010
Location: Cape May
Posts: 60
Mopar sensor and solenoid were used. I don't know anyone with a scan tool that reads real time trans data. My last resort is the dealer?
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Unread 02-03-2013, 06:23 AM   #5
neonhomer
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1996 ZJ 
 
Join Date: Sep 2010
Location: Edgewater, FL, Florida
Posts: 441
I would go to a transmission repair shop first. Dealer is going to charge you to do a diagnostic scan. Most tranny shops will at least road test and scan the vehicle for free.
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[COLOR="Lime"][SIZE="5"]NeonHomer[/SIZE][/COLOR]
Mid-Florida Jeep Club - Member
1996 Jeep Grand Cherokee, 4.0L/42RE/242 - Rebuilt motor w/ Comp cam (4/12), 3.5" Junkyard F>R lift, 31x10.5.x15 M/T's, Spartan Locked D44a, TC & tank skids, F&R adj trackbars, V8 steering arms
Galaxy DX99V CB, 102" SS Whip, Yaesu FT-2900R 2m, Larsen 1/4w mag mount, Sony HU, Massive 3way - F Door, Pioneer 3way - R Doors, MB Quart ONX304 Subs (x2), Lanzar 1600w amp.

"No Matter Where You Go... There You Are."
"Oh me oh my a lovely day is dawning. Oh what a joy I didn't wake up dead. So I can go to work and then resume my yawning, and get my sleep on site instead of in my bed" - Daria Morgendorffer (with my twist)
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