nipper Posted September 11, 2006 Share Posted September 11, 2006 This is annoying not an issue. same road same conditions. Sometimes the car stays in third with a delayed upshift to fourth. When in fourth with cruise may delay lockup. Fluid is new, and does it when hot. Any ideas? Quote Link to comment Share on other sites More sharing options...
Manarius Posted September 12, 2006 Share Posted September 12, 2006 I find that using cruise, my car jumps a lot from lockup to not locking up. I think the cruise unit's interaction with the TCU causes this - I don't think it's mechanical. Quote Link to comment Share on other sites More sharing options...
OB99W Posted September 12, 2006 Share Posted September 12, 2006 This is annoying not an issue. same road same conditions. Sometimes the car stays in third with a delayed upshift to fourth. When in fourth with cruise may delay lockup.Fluid is new, and does it when hot. Any ideas? Is the road level or inclined? If inclined: up, down, how steep? Quote Link to comment Share on other sites More sharing options...
Andyjo Posted September 12, 2006 Share Posted September 12, 2006 have you tried the extra grounding mod? i found my 4eat shifts alot better with it... i just ran some heavy gauge wire from the neg. battery terminal, to some bolt on the block.. not sure exactly what it was Quote Link to comment Share on other sites More sharing options...
idosubaru Posted September 12, 2006 Share Posted September 12, 2006 try disconnecting the shift resistor and see what happens? i leave mine disconnected anyway, shifts are firmer and the POWER light blinks but i like the way it shifts much better that way. Quote Link to comment Share on other sites More sharing options...
nipper Posted September 12, 2006 Author Share Posted September 12, 2006 Is the road level or inclined? If inclined: up, down, how steep? doesnt matter, it can be flat or down hill. Uphill i understand. nipper Quote Link to comment Share on other sites More sharing options...
OB99W Posted September 12, 2006 Share Posted September 12, 2006 doesnt matter, it can be flat or down hill. Uphill i understand. I don't know offhand why a '97 (phase 1) 4EAT and matching TCU would behave the way you're describing. The phase 2 units (like my '99) have a shift map that includes downshifting to 3rd if you just tap the brakes while going downhill (to obtain engine braking). Even that wouldn't explain the behavior on a level road. Quote Link to comment Share on other sites More sharing options...
Manarius Posted September 12, 2006 Share Posted September 12, 2006 Phase I (well, 90-94 at least) shift down into 3rd to attain engine braking. It's quite a difference slowing to a stop in Neutral than in Drive. Quote Link to comment Share on other sites More sharing options...
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