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A/T Sportronic missing in third (F4A4B4L3Z)
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mwaterous
New User
Feb 5, 2012, 2:27 PM
Post #1 of 1
(1623 views)
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A/T Sportronic missing in third (F4A4B4L3Z)
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The car is a 2007 Mitsubishi Eclipse 2.4 l4, 50,000 miles equipped with an automatic transmission and sportronic.
At first I thought the issue was that the simple act of switching into third would lose 300rpm, but I discovered with some playing around that that's not quite the case. It's almost like it hits a pocket or bubble of some kind right around 3000 rpm while in third. If you switch up from 2nd at 4-4.5k you lose power for 2 seconds because it hits the bubble instantly before catching. If you switch below 3.5 and continue to accelerate you hit the bubble right around 2900, it loses the 300 and coasts for a second, then catches and pulls right through 3000 like it was trying to make up for it. If you bump up twice and go from 2nd straight to 4th (as quick as you can with an a/t) you skip the bubble but of course you have the whopping power of 4th at your disposal.
In a nutshell, no matter how you get there, there seems to be a pocket of empty space around 2900-3000 rpm in third gear. This seems to be affecting a lot of people with the same model year car as mine according to the Eclipse forums, but nobody has been able to get it fixed.
Any ideas? I could go leave it with warranty and be without a car for a couple of weeks, but I don't get the feeling from the Eclipse forums that they'll fix it.
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