Try disconnecting the battery for about 5 or 10 minutes the reconnect, I have heard this works.
Unhook the battery for about 2 minutes and that will reset the computer.
somethings wrong with regards to the engine
1990 f350 did not have a turbo, unless it was fitted after market, so check what engine you have such as year and size and then maybe we can answer your question
No.
i have a f350 7.3 an my low range is flashing on what does that mean
Once you disconnect the negative side of battery for approx. 5 min, put vehicle in drive and pull forward and this should clear the ABS light. Will not clear automatically after starting or in reverse.
check the glow plug, if it is diesel
.. is going to depend on which engine you have.
what engine size do you have ?
GAS OR DIESEL?
that depends on what engine both trucks came with.
There was more than one engine option. Which engine did you have in mind?