Transmission Shifts Late at High RPM
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Transmission Shifts Late at High RPM - 5/9/2008 8:53:48 PM
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MagnumVP
Posts: 48
Joined: 7/27/2006
Status: offline
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1999 Dodge Ram Quad
5.9L V8
Automatic Transmission
When I start from a complete stop the transmission doesn't shift into 2nd until about 3000 RPM's. At that point the trucks shifts and the "Check Engine" light turns on. It still shifts smooth (well at least for this truck). I dropped the pan, replaced the filter and 5 Qts of ATF+4 fluid. Removed the Negative from the battery (resetting the computer) and try it again. Same thing (bummer, I was hoping for a $45 fix) and even drove it around 10 miles to let the fluid heat up but same thing. I also notice that it shifts from 3rd to 4th rather high as well.
What could be the issue? I am going to take it down to get the diagnostic code read to see what could possible be the issue, but wanted to go into the mechanic with an idea of what it could be.
Thanks
Magnum
_____________________________
1999 Dodge Ram 1500 Sport
5.9L V8 4x4
Thank You
Magnum
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RE: Transmission Shifts Late at High RPM - 5/10/2008 7:04:22 AM
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aim4squirrels
Posts: 2213
Joined: 7/23/2007
From: Texas
Status: offline
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Two things off top of head:
Throttle position sensor (hey, it's a $40 fix if that's what's wrong.)
Thottle valve cable is misaligned. See this link for adjustment. Free fix, but you will need to find out why it slipped if it did.
If your truck has a digital odometer you can turn the key on,off,on,off,on fairly rapidly and then read the code in the odometer. You must turn the engine fully on, but DO NOT crank it to start. Post that code here and we'll be able to better help.
< Message edited by aim4squirrels -- 5/10/2008 7:12:01 AM >
_____________________________
2001 1500 5.2L long bed:
SCT
4.10s
50mm TB
1.7 HS RR
3" exhaust si/so
Round A/C
Modified Keg
MSD ignition
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RE: Transmission Shifts Late at High RPM - 5/10/2008 8:51:45 AM
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MagnumVP
Posts: 48
Joined: 7/27/2006
Status: offline
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I tried to get the readout of the code from my odometer by using the on, off, on, off, on but couldn't get it to read out. Do I need to turn it on, leave it until the dash lights come on or turn it off before the dash lights appear?
_____________________________
1999 Dodge Ram 1500 Sport
5.9L V8 4x4
Thank You
Magnum
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RE: Transmission Shifts Late at High RPM - 5/10/2008 2:22:19 PM
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jason.w
Posts: 919
Joined: 1/17/2008
From: South Dakota
Status: online
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Leave it in the "on" position that last time until it gives you the code.
I have heard that on some 1999 models this procedure will not work, though, just FYI.
_____________________________
-Jason Westerberg
http://www.cardomain.com/ride/2902720
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RE: Transmission Shifts Late at High RPM - 5/11/2008 9:56:23 AM
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MagnumVP
Posts: 48
Joined: 7/27/2006
Status: offline
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I do leave it in the 'on' position the last time, but how long do I leave it in the 'on' position during the first and second times.
Just some more information about it. Perhaps this will help diagnose what the issue is.
From the truck being turned off. I start the truck and take off. The first time that the transmission attempts to shifts it goes to 3000 RPM's and the shifts. From then on, it shifts normally. Every once in a while it acts up but never as bad as the first time. It never shifts hard, it has no problem down shifting...at least yet and it sometimes takes a while to shift from 3rd to 4th, but never at really high RPM's.
If I disconnect the neg from the battery and reset the computer, the "Check Engine" light turns on when the truck shifts from 1st to 2nd during the initial startup and high RPM's.
_____________________________
1999 Dodge Ram 1500 Sport
5.9L V8 4x4
Thank You
Magnum
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RE: Transmission Shifts Late at High RPM - 5/11/2008 9:29:08 PM
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Shawn86
Posts: 159
Joined: 7/17/2007
Status: offline
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when I read my codes, I leave the key in the on position each time untill the lights turn on for three times, on the third leave it on and it might bring up the code. If not, run to the nearest kragen and have them give you a free reading. My truck is doing the same exact thing yours is, I replaced the tps and it helped a little bit, the old tps was rattling! I just have to baby the throttle to get it to shift properly. Mine is throwing a 1740 code but currently i don't have the dough to throw at it. The 1740 calls for replacing the tcc solenoid, and the overdrive soleoid ( or so all the tranny shops tell me). They're each about 100 bucks from a dealer, cant get'em at napa. Let us know what she says.
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