1999 Dodge Grand Caravan No Upshift

1999 ALL OTHER MAKES ALL OTHER MODELS
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KIMHOYT1
  • MEMBER
  • 5 POSTS
I have a 99 caravan 113k miles just yesterday while excelerating up to highway speed the transmission would not shift any higher than 3rd gear> i pulled over shut the engine off and restarted. the engine shifted higher but was jerky in doing so. Also when I am slowing down the transmission sporatically shifts in a lot lower gear fast very jerky. Any ideas? THis only seems only to happen when the outside temp reaches 99 and above which has been alot lately....
Aug 3, 2006 at 6:09 PM
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VANDRAGON
  • ✓Experienced Mechanic
  • 298 POSTS
when was the last time the fluid and filter were changed?
Aug 5, 2006 at 1:51 AM
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KIMHOYT1
  • MEMBER
  • 5 POSTS
[quote:5742a08a84="vandragon"]when was the last time the fluid and filter were changed?[/quote:5742a08a84]
I don't know when it was last changed I have owned it 2 months but the guy I bought it from was excellent about maintenance. Since my last question I had the code read and have a code p0700 does that help any?
Aug 9, 2006 at 8:10 AM
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VANDRAGON
  • ✓Experienced Mechanic
  • 298 POSTS
trans control system malfunction. if you know how to check the trans fluid. look at the dipstick and see if the fluid is pink or dark. if it's dark that isn't good. call autozone and ask, these guys are very good. i wish i could tell you more. if you haven't yet, take it to a trans shop and let them test drive it.
Aug 9, 2006 at 11:35 AM
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Suggested Repair

Check transmission fluid level and color (pink is normal; dark is a concern) and confirm fluid and filter service history. Have a transmission shop diagnose the P0700 transmission control system code and test-drive the heat-related shifting problem.

Conversation Summary

A 1999 Dodge Grand Caravan with 113,000 miles would not upshift past third at highway speed, then shifted harshly after a restart and downshifted abruptly while slowing. The issue occurred mainly when outside temperatures were 99 degrees or higher. A scan showed code P0700. The expert identified this as a transmission control system malfunction and advised checking fluid condition, asking a parts store about the code, and having a transmission shop test-drive the vehicle.

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