transmission overheat message appears on p38
#1
transmission overheat message appears on p38
High i have a p38 that displays transmission overheat, very slow to take off, fluid comes out of the trany breather and dipstick, seems to build up pressure in trany and disperses out through breather,when you select lower gears makes no different on take off. Almost if it is only selecting drive only. Any ideas out there? Peter
#2
Some things to check might include:
Transmission cooler and lines to/from, for kink, pinch, etc. on the lines and mud or trash blocking fins. Fans working OK on radiator and AC condenser would also be important. You could actually disconnect lines and flush out the cooler, or bypass with rubber hose and clamps with a substitute cooler. Any coolant in tranny fluid or vice versa? Leak from radiator into tranny would not be good.
Will be needing a fluid and filter change, could be gunked up filter. If you are pumping out fluid, the level is not likely to be where it should be.
Helps to have miles on truck, when last filter and fluid chnage done on tranny, etc.
Transmission cooler and lines to/from, for kink, pinch, etc. on the lines and mud or trash blocking fins. Fans working OK on radiator and AC condenser would also be important. You could actually disconnect lines and flush out the cooler, or bypass with rubber hose and clamps with a substitute cooler. Any coolant in tranny fluid or vice versa? Leak from radiator into tranny would not be good.
Will be needing a fluid and filter change, could be gunked up filter. If you are pumping out fluid, the level is not likely to be where it should be.
Helps to have miles on truck, when last filter and fluid chnage done on tranny, etc.
#3
The first thing that comes to mind for me is that there is too much ATF in the transmission. The margin of error for overfilling is small, and it does warn about overfilling in the owners & service manual. Check the fluid levels using the proper method in the owners manual, do what Savannah has suggested and get back with us.
#4
The first thing that comes to mind for me is that there is too much ATF in the transmission. The margin of error for overfilling is small, and it does warn about overfilling in the owners & service manual. Check the fluid levels using the proper method in the owners manual, do what Savannah has suggested and get back with us.
#5
Suggest you drain fluid from tranny. If coolant is in there it may not show up on dipstick, but will come out in the drain. Most Rover trans only drain out about 3 quarts of ATF.
If coolant is present, could be cross over from radiator. Before buying new radiator, this could be confirmed by removing tranny lines from radiator, and connecting them together with hose and clamps. You can then run truck for brief periods, and see what comes out the radiator side of the trans cooler. Work around would be after market cooler (new or used), which gets you back on the road; but 4th gear won't engage until fluid gets above 150 degrees on Rovers equipped with a heat switch for same.
Also inspect tranny pan for any large dents, which could also change what happens.
If coolant is present, could be cross over from radiator. Before buying new radiator, this could be confirmed by removing tranny lines from radiator, and connecting them together with hose and clamps. You can then run truck for brief periods, and see what comes out the radiator side of the trans cooler. Work around would be after market cooler (new or used), which gets you back on the road; but 4th gear won't engage until fluid gets above 150 degrees on Rovers equipped with a heat switch for same.
Also inspect tranny pan for any large dents, which could also change what happens.
#6
#7
p38 overheat problem
I really appreciate you guys getting back to me quick, thankyou, tried all of the above, fluid is flowing freely through trany cooler, disconnected and blew high pressure air through ,the problem is still there, would appreciate all the help as car is dangerous to drive with fluid leaks onto manifold ?
#8
You are correct on fire hazard issue. Has a high ignition point, but can burn. If drain and refill to proper level made no change, may be time to drop the pan and change the filter, you may have other parts that come out in the pan. Carry fire extinguisher on test drives. Insurance up to date? Don't park inside garage or car port.
Last edited by Savannah Buzz; 08-29-2011 at 04:24 AM.