1999 Dodge Grand Caravan Won't Shift

DODGE CARAVAN
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NAPRIDE
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  • 2 POSTS
Dodge Grand Caravan 1999 159000 miles 3.3L
I was driving with the van on cruise control when the cruise kicked off and the speedometer went crazy going up and down radically. It wont shift past 3rd and if you try to automaticallt shift it starting in first it gets stuck there and wont shift. Any ideas?
Apr 28, 2007 at 12:05 PM
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2CARPRO JACK
  • ✓Experienced Mechanic
  • 11,533 POSTS
To start I would have it scanned to see if the PCM picked up any codes. Could be as simple as the VSS (vehicle Speed Sensor). But scanning it will help point us in the right direction
Apr 30, 2007 at 2:57 AM
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NAPRIDE
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We scanned the vehicle and the codes said:
gear 1 ratio incorrect & transmission control system malfunction. So I don't really understans how the gear ratio could be wrong unless the control system malfunction has something to do with it.
Apr 30, 2007 at 2:01 PM
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DANIELTHECHSKID
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When a Chrysler electronic transmission/transaxle throws an incorrect ratio code it is usually caused by bad speed sensors as noted by Jack or it is slipping due to wrong/old/low fluid, plugged filter, or worn out clutch packs.
May 3, 2007 at 6:00 PM

Suggested Repair

Scan confirmed an incorrect gear-ratio code and a transmission control system malfunction. Check the vehicle speed sensors first, then inspect transmission fluid level and condition, the filter, and possible clutch-pack wear or slippage.

Conversation Summary

A 1999 Dodge Grand Caravan lost cruise control, showed an erratic speedometer, and would not shift past third or out of first. A scan found an incorrect gear 1 ratio code and a transmission control system malfunction. Experts said an incorrect-ratio code on this Chrysler transaxle is usually caused by bad speed sensors or by slipping from low, old, or wrong fluid, a plugged filter, or worn clutch packs.

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