what counts is ENGINE RPM.
i put shifter in REV.
i do the stall test in the FSM, or at alldata.com
the stall test is brake hard sat and advance throttle with right foot for 5sec max, what is RPM????
if its very very low RPM that is a weak engine, but will not that, because car drives perfect in forward gears.
if the RPM shoots why to high (read the page) 2500 is like max,IIRC.
that means REVERSE slips.
ever try a new tranny filter. or better a full flush and new filter?
amazing things happen , it last 2 times longer.
hell do the stall test in all gears, takes what 1min?
and see the book , on spec.
or the real FSM
get one, and win.
see it here, in 1st.
this video use the A/T tranny to test a good MAF.
this test is classic test on all trannys, in all FSM of ever car (non CV)
note the rpm in top right corner, and it ends at 2000 rpm
this proves 3 things
1: engine has full power
2: tranny dont slip in 1st.
3: the MAF is at full output and good, (ignore this for now)
then brakes are had set. and chocks on tires.
the engine and tranny be come like a dyno test.
the FSM cover this is vivid details on 1st and reverse.
and the solutions.