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Car Forum / Volvo Cars / June 2005auto trans problem
Hello All, I've got a 90' 740 GL (automatic transmition) and it all has just over couple of hundred thousand miles. It seems to be shifting good normally but every once and a while it just shifts down like you have pushed the O/D button into the off position, on it's own. The light comes on that is on the dash to indicate it has been moved but I have done nothing with the button. But I push the button and it shifts into O/D and continue on. I'm afraid I will damage the tranny if this continues so if anyone among you have seen or had this happen and can tell me how to correct this I would appriciate it very muchly. Bruce > Hello All, > [quoted text clipped - 9 lines] > > Bruce It won't harm the transmission. The O/D relay's gone flaky. Bob  SignatureThe goal when driving is to miss the maximum number of objects. > Hello All, > [quoted text clipped - 9 lines] > > Bruce http://www.brickboard.com/FAQ/700-900/TransmissionAuto.htm#AW7071OverdriveRelaySwitch SignatureMike F. Thornhill (near Toronto), Ont. Replace tt with t (twice!) and remove parentheses to email me directly. (But I check the newsgroup more often than this email address.) Thanks to you all for this valuable information, I'll check the wiring and the relay out asap and let you know which problem it was. Thanks again! Bruce >> Hello All, >> [quoted text clipped - 14 lines] > > http://www.brickboard.com/FAQ/700-900/TransmissionAuto.htm#AW7071OverdriveRelaySwitch More likely that the kickdown wire has come out of adjustment or you are being a little leadfooted when driving. Cheers, Peter. > Hello All, > [quoted text clipped - 9 lines] > > Bruce there is an orange arrow on the dash pointing upwards . does this arrow flash unexplainably ? if so that means the transmission has a code in it and needs to be tended to > More likely that the kickdown wire has come out of adjustment or you are > being a little leadfooted when driving. [quoted text clipped - 14 lines] > > > > Bruce > there is an orange arrow on the dash pointing upwards . does this arrow > flash unexplainably ? if so that means the transmission has a code in it > and > needs to be tended to <snipped> Not on a 740!! There are no codes storable as transmission is purely mechanical. Cheers, Peter. Peter, the arrow on the dash does come on when it unexplainably shifts down but there has never been any blinking of the arrow that I have noticed. Bruce >> there is an orange arrow on the dash pointing upwards . does this arrow >> flash unexplainably ? if so that means the transmission has a code in it [quoted text clipped - 5 lines] > > Cheers, Peter. > Peter, the arrow on the dash does come on when it unexplainably shifts down > but there has never been any blinking of the arrow that I have noticed. > > Bruce You've got a bad connection inside the overdrive relay. If you can solder it's easy to fix, otherwise a new relay is about $50 and is easy to change out. That was it I guess, I heated up one spot that looked bad on the board and it hasn't done it since. Thanks, Bruce >> Peter, the arrow on the dash does come on when it unexplainably shifts > down [quoted text clipped - 5 lines] > it's easy to fix, otherwise a new relay is about $50 and is easy to change > out. |
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