Once it warms up, it won't go forward. It does reverse. Is it the transmission?
The transmission fluid levels would need to be checked, and the fluid should not smell burnt; if it smells burnt, then the forward clutches may be burned-out. Only a thorough transmission check and pressure test can determine whether the transmission is toasted. I recommend having a mechanic, such as one from YourMechanic, service your transmission fluids, then identify and quote the repairs needed.
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