904 Shifts high
#102128
08/09/08 09:33 PM
08/09/08 09:33 PM
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Joined: Jan 2003
Posts: 3,623 Millinocket, Maine
JonC
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,623
Millinocket, Maine
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340, 904,3.23's. When putting my foot in the carb the engine revs for a second when it kicks down to second gear and then is normal. What is wrong?
Last edited by RangerDan440; 08/09/08 10:25 PM.
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Re: 904 Shits high
[Re: nutso suave]
#102131
08/09/08 09:40 PM
08/09/08 09:40 PM
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Joined: Mar 2005
Posts: 7,052 Madera, CA.
MowP4rsn
master
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master
Joined: Mar 2005
Posts: 7,052
Madera, CA.
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Quote:
Quote:
904 Shits high
most hilarious misspelling ever.
How did THAT get through????
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Re: 904 Shits high
[Re: MowP4rsn]
#102133
08/09/08 09:46 PM
08/09/08 09:46 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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the automatic moparts editor is on the blink & a day or so ago a post with a link to an eGay ad was allowed to stand EDIT almost forgot,I would adj the bands.
Last edited by RapidRobert; 08/09/08 09:50 PM.
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Re: 904 Shits high
[Re: JonC]
#102135
08/09/08 10:05 PM
08/09/08 10:05 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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we better see what Kunkel has to say. EDIT I reread your post & it has been acting this way ever since it was "freshened"?
Last edited by RapidRobert; 08/09/08 10:08 PM.
live every 24 hour block of time like it's your last day on earth
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Re: 904 Shits high
[Re: RapidRobert]
#102136
08/09/08 10:09 PM
08/09/08 10:09 PM
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Joined: Nov 2007
Posts: 21,825 Kirkland, Washington
Pacnorthcuda
Too Many Posts
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Too Many Posts
Joined: Nov 2007
Posts: 21,825
Kirkland, Washington
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Quote:
we better see what Kunkel has to say.
Agreed, but I will say I know from experience that loose bands can cause 'rpm flare' during the shift. I would suspect either worn bands or a severe need of a band adjustment.
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Re: 904 Shits high
[Re: JonC]
#102137
08/09/08 10:11 PM
08/09/08 10:11 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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Double check the kickdown band with the pan off so you can grab the lever and move it by hand. It should move about 1/8th inch at the tip, mabey a fraction more or less depending on the ratio but 1/8th is about perfect. If you are positive it is good then pull the VB and pull the front band apply piston out and check the sealing rings. You can also check for proper functioning with air when the VB is removed and the piston and band all in place. Last thing I discovered after going through all this on a 904 doing the exact thing you describe, I had been useing ATF+4 and after about 3 fills and fooling with everything in the kickdown band apply circuits and no luck it was getting expensive and I was out of ideas. Finally one of the local tranny gurus here said the new fluid had way less friction makeing ability to give the newer trans smoother shifts. He recomended I refill it with typy F and I did and the problem was 100% gone. I have pretty much always used type F in old mopars and I will always use it. It made all the shifts better.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: 904 Shifts high
[Re: JonC]
#102140
08/10/08 04:21 PM
08/10/08 04:21 PM
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Joined: Jan 2003
Posts: 25,817 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,817
Rio Linda, CA
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Previous advice is spot on. When you floor it to kickdown, the front clutch is releasing but the kickdown band isn't applying right away so the rpm's flare up.
Adjust the kickdown band; if that doesn't help there is a problem with the band or the servo.
The INTERNET, the MISinformation superhighway
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Re: 904 Shifts high
[Re: JonC]
#102142
08/10/08 08:45 PM
08/10/08 08:45 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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We'll help.
First pull the pan, take all the back row of bolts off then one side then the other( so all the fluid comes out the back and is easier to catch) then loosen the front row then remove the front row and hold the pan from falling.
Then you got to look for the front band apply lever. It will be located on the piston at the front of the trans. Grab the tip over the piston with two fingers and firmly pull it up and down, it should move about 1/8th inch.
Report back to us at that point before putting it back together or adjusting it.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: 904 Shifts high
[Re: JonC]
#102144
08/11/08 03:04 PM
08/11/08 03:04 PM
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Joined: Jan 2003
Posts: 25,817 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,817
Rio Linda, CA
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No need to pull the pan to adjust the kickdown band, it's the external adjuster.
Loosen the 3/4" jam nut, back it off several turns, tighten the adjuster just snug with a short wrench, back the adjuster off two turns, hold the adjuster while tightening the jam nut.
If that doesn't cure the flareup the pan can then be removed for a look see.
The INTERNET, the MISinformation superhighway
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