Why does my 1995 Toyota Tercel engine cut off while driving 60 miles per hour on the freeway?

Hi Gary:
Checking the spark plugs is a good idea.
How long since you've changed them?

One groove per gear those are it

Check out related help links to troubleshoot these problem:----Click the link below:---Idles Fine but RPM jumps in drive mode?http://technoanswers.blogspot.in/2012/07/idles-fine-but-rpm-jumps-in-drive-mode.html
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http://whatisbyme.blogspot.in/2012/05/1990-toyota-4runner-engine-cuts-off.html

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http://whatisbyme.blogspot.in/2012/05/1999-toyota-camry-erratic-stalling-and.html

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These will help.
Thanks.

Check to see if the check engine light is on and there is a slash mark across the "D" on the dashboard. If so, then it usually means the transmission range selector is bad and needs to be replaced.

low oil boiling water sometime automatically stop the engine for further damage. stop the engine wait for sometime. fill up oil/water. check fuse/switches for engine/lights/dimmer. re start.

replace both and also check for a loose ecm ground

1.6 engine 36 ft lbs 1.8 engine 36 ft lbs 2.0 engine 49 ft lbs

Here are the most common causes of surges, stalls at stops, low erratic idle speed, rough idle and engine hesitation, it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Here is the most common cause of surges and stalls and low idle rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

A very possible problem could be a clogged fuel filter. Is there a Check engine light?