SOURCE: 1998dodge1500 wont shift from 2nd to 3rd unless I let off the gas
Well, I should be asking for more information, but since I am now on my 5th, yeah, 5th transmission in my 95 1500 Ram I have come to learn a little bit about them. Chrysler had a bad problem with their trannies in the 94's & 95's. They then made a change in 96, but that didn't solve the problem. So here goes my attempt to help you out.
Have you checked you tranny fluid level? Very important. A transmission kind of works under the same principal as a jet boat. Meaning, it pumps the fluid through the transmission much the same way a jet boat pumps water through it to move the boat, but in this case the fluid power is directed through several lines causing the gears to move. You switch gears when there is a certian amount of pressure on the modulator to divert the fluid to another area.
Long story short: Check your fluid, not only the level BUT the fluid. Are you seeing any metal in it? Dodge had a problem with the webbing of their torque converters flaking off, causing transmission cooliant lines to plug up. This same metal chips, shavings, etc. were damaging the face of the clutches, and plugging up modulators. Check your fluid. I would probably say change your fluid and transmission filter. It's not that big of a job if you have a place you can work on your vehicle. Be careful when putting you transmission pan back on. Make sure you tighten the bolts in a crosswise manner, and tighten them snug, BUT not over tight. That will cause leaks.
Another point I will make. Check for vacuum leaks, this could very well be your culprit too.
I'd start with that first.
Good luck, let us know how you come out.
SOURCE: transmission flares
NO: 43-37
DATE: 2-25-2003
MODEL: MY 2001-2002 S60, V70, V70 XC
SUBJECT: Shift Quality Issues due to B4 Servo Cover Failure, 2-3 upshift harshness or flare
CHASSIS: These chassis breaks are approximate:
S60: 062000-152000
V70: 116000-230000
V70 XC: 036000-067100
TRANSMISSION SERIAL NUMBER: The first 3 digits of the serial number on the affected transmissions will be between 01C (March 2001) and 01L (December 2001).
DESCRIPTION:
In the AW 55-50, brake number four (B4), is only applied in 3rd gear. The B4 is applied by a piston, which is covered by an aluminum cap. This cap has a steel washer crimped to its inside surface, and a rubber cushion that sits between the cover and the washer.
If this washer breaks free from the crimps it will become concaved because of the B4 piston return spring pressure.
This loose washer can cause:
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" 2-3 upshift flare / slip
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" Harsh 2-3 upshifts
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" 3-4 upshift flare / slip
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" Harsh 4-3 downshifts
Replacing the broken B4 cover with a new one (PN 30651771) will remedy these symptoms.
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