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Summary: When a transmission is having problems, a person can take it to a specialist who will determine if the problem is caused by something electrical or mechanical. Discover how transmission fluid is examined to identify problems with help from an automotive technology professor in this free video on transmission problems.
Bob Ricewasser is a former automotive technology professor and an avid car collector. He has a broad level of knowledge on vehicles, ranging from the "horseless carriage" era to...read more
"You feel that you have a transmission concern, such as your transmission will not go into gear, or it's not shifting properly, or you're getting a shutter probably one of the first things you might want to do is go to a automotive transmission specialist or to a general repair shop that services transmissions and have the transmission diagnosed. This can be done in a number of ways, the newer cars that are computer controlled you can plug in a scan tool which is a tool that reads the codes coming out of the computer, the malfunction codes and you can actually come up with a code and then you can do what we call chasing down the code. Actually to check the vehicle and see why this code came up and what caused it. A lot of times it could be a relay that actually shifts the transmission, something like that that's electronic and not necessarily mechanical in the transmission. Another thing you probably want to take a look at is the transmission fluid make sure that you have an adequate amount of transmission fluid in the vehicle, if it's low it's going to slip and not shift and also you want to inspect the condition of the fluid. If the fluid appears to be burnt, dark brown color, or look like coffee grounds in it then you're probably going to need a transmission overall. Transmission fluid should be a cherry red color and the transmission should not be overfilled either so you want to make sure that you don't over fill it and of course that it's not low on fluid."
eHow Article: Advice for Transmission Problems