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DiscoveringTheDisco
Guest
Hello all...glad to be a part. This will be my very first post but I have been reading/enjoying all the useful information. Let me jump right into the problem with my Disco. I have a '95 Disco I with +/- 139,000 miles that has been giving me transmission problems...from all that I've read I'm sure that comes as a complete shock. Initially, the cooler lines were leaking...changed them out w/new. After replacing the lines it seems that the transmission cooler decided it was going to leak...I guess the corroded end was happy that the lines were leaking and losing pressure so it didn't have to deal with it! Replaced cooler w/new. Filled the ****** back up to correct level and everything seemed to be ok. Also, changed out power steering reservoir and all lines since they were all leaking too. At this point I was pretty damn proud of myself and took my truck for a long test drive...about 25 minutes into the drive the Transmission Overtemp light comes on and stays on until I get home. The light has only come on once before when towing. There were/are no noticeable noises, slips or other nonsense from the transmission or transfer case. I shut the engine off and turned the key back to ACC and the A/C fan (2 fan assembly in front of the radiator) came on/off repeatedly until the Transmission Overtemp light went out. Started the engine again and about 10 minutes later the light was on again...engine off, ACC on; fans on/off until light goes out. The cooler lines and gear selector do get awefully hot (almost to hot to touch) but I don't have a way of measuring the exact temp...sorry. From reading other threads, I have seen the transmission switch/sensor(s) mentioned...I don't think this is my problem since 1) it is the cooler lines that get hot and only the ATF runs through them so the TC sensor should be ok and 2) the light waits for 25 minutes to come on and goes out when the sensor is cool...sounds to me like it's working the way it should. I don't know the past service history for the transmission and will not make any assumptions. I have owned the truck since +/- 130,000 miles and haven't changed the trans fluid or filter but that is the project for tomorrow morning. I guess my question is - could a dirty filter actually be dirty enough to restrict flow that drastically? Excuse my ignorance but I'm truly surprised by that. Anyways, I am changing the filter and fluid (same old ATF - I'm not so sure I'll benefit from synthetic) tomorrow and hope this will solve all my overheating - will post updates. Please please chime in with any helpful information/advice/other. Thanks for taking the time to read and hopefully respond.
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