have you checked the oil level in the transmission ? I'm betting the answer is no
could the vale body be bad on my 94 ford truaus keeping it from shifting right
Check electrical connections on transmission for corrosion and/or moisture
I have the same problem on my 95 Sable LTS
Could be a bad inertia switch.
Could be sucking air into intake.
Depending on which engine you have, an alternator could range from $140-195 (USD) at Autozone.com.
it could be the fuel filter is pluged or the fuel pump is out
I doubt it is the tps. Could it be the transmission shifting in and out of overdrive?
Yes, it could be dirty injectors causing this problem. It could also be an issue in the fuel line, fuel pump or fuel filter.
In my 03 mercury sable, I had the same problem and it was the PVC elbow hose. It had a huge hole in it and I saw online that this is a problem with the 24V sable.
Lack of or absence of maintenance such as oil changes and fluid levels.
the batterys in your keyless remote may need to be changed