No acceleration

1993 FORD TEMPO
118,000 MILES • 2.3L • 4 CYL • AUTOMATIC
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REDC
  • MEMBER
  • 1 POST
The car starts fine, shifts into drive fine, but then just revs. It won't accelerate.

This happened after (seemingly unrelated) I changed the oil, oil filter, air filter, drain plug, and PCV valve grommet. I need to change the PCV valve too, but I had to order one. Before this change, the car shifted fine.

Also seemingly unrelated, I used to use 5W-30 oil. But now switched to 5W-20 since the recommendation changed.

Not sure how any of this relates to not being able to accelerate, but I find it odd it was fine until I made these changes. Literally right after, same day, I can't accelerate.

Is it possible the air gap from the grommet allowed enough flow for acceleration and now the new grommet with a shot valve is preventing proper air flow? If not, any suggestions?
Feb 3, 2019 at 11:48 PM
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ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 52,796 POSTS
Good morning,

This sounds like a transmission problem.

https://www.2carpros.com/articles/automatic-transmission-problems

Does the car engage into gear?

Have you checked the fluid level?

When was the last time you changed the oil/filter for the transmission?

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Roy
Feb 4, 2019 at 1:31 AM
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