I just purchased a 91 300 coupe non-turbo and it has 127000 miles on it. I
was driving it today and the Engine started reving up and down and the
RPMs started going crazy. The car did shut off and would not crank. I
towed it home and then tried to crank it and it cranked up and ran fine
like nothing happened. I drove it down the street and back it rode fine. I
am going to replace the timing belt before I ride again since I'm not sure
if it was replaced at 120000. I don't think that is what caused the
problem though. I'm thinking it may be the mass air sensor after reading
others problems. Could someone shed a little light on this problem since
this is the first z car I've owned. I do have a copy of the service manual
on cd. Thanks!