johnhjohnson2
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- Location
- Little Rock, AR
I have a 1989 M998 bought at auction. When I received it the TDM was unplugged where the fan runs constantly which I have heard is common. When I connect my TDM my fan does not quit running when in neutral or drive with parking brake on. When I drive the vehicle for 20-30 minutes with TDM connected my temperature will run in the 220-240 range. If I leave it disconnected my temp hardly ever gets above 160. I am certain it isn't the gauge malfunctioning as I can feel massive amounts of heat radiating near parking brake when TDM is connected. Also, my air restriction gauge does not operate unless the TDM is connected. Does the TDM need to be connected for the Air Restriction Gauge to function normally?
Also I washed the engine off today and the plugs to TDM got wet and were not connected. The air restoration gauge started working and my transmission would not shift out of first gear. As soon as plugs dried out the air restriction gauge did not come on and truck shifted normally.
Sorry for all the random facts just hoping for some direction as where to start looking for issues. I have ordered a new TDM as I have read they fail frequently but am unsure if the problem may lay elsewhere. I am just looking for how these things could be connected.
thanks
Also I washed the engine off today and the plugs to TDM got wet and were not connected. The air restoration gauge started working and my transmission would not shift out of first gear. As soon as plugs dried out the air restriction gauge did not come on and truck shifted normally.
Sorry for all the random facts just hoping for some direction as where to start looking for issues. I have ordered a new TDM as I have read they fail frequently but am unsure if the problem may lay elsewhere. I am just looking for how these things could be connected.
thanks