Cardboard in front of radiator,. Now Trammy slips.,..WHY
I own a 91 Aerostat with 4.0 Having dilemma with
heat, so I used the cardboard trick... But, now my
tranny slips horribly..... WHY??
You may have overheated the transmission fluid. Check the fluid, if it smells burnt you may have fried the transmission.
The transmission cooler is part of the radiator and like FOR suggested you cooked the trans fluid. Have the trans fluid flushed and hope the trans is not burned up. Then fix the issue for your heat, and do not use cardboard.
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