Autobox locks itself in 4.th gear! - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 1 (permalink) Old 04-24-2019, 11:38 PM Thread Starter
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Join Date: Jul 2016
Location: Oslo
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Autobox locks itself in 4.th gear!

Hi! Car is 166 2,4jtd with automatic gear. Now it gets locked in 4.th gear when cruising in aprox 80 km/t (in 5.th gear)and a red lamp appears. Then I can stop the car and turn off engine, then start again and drive off and all is fine, for a while, then it appears again. If I choose manual mode then it seems I can aviod the problem if I do not get the rev under 2000, so if I drive faster than 90km/t in fifth gear then its ok. A autobox specialist worksop tells me this box is a AW55-50 which they know wery well and the problem can be vear in the valvehouse, but a diagnose is the first ting to do.
Anyone had this problem?
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