Tach causing automatic transmission shifting problems

What is your question?

Can manually shift car beteween 2nd and drive

What makes this problem better or worse?

When tach works.... It shifts fine

Visitor

in Newark OH

Oct 5, 2020

Popular Answer

What are the best Pontiac repair shops?

RepairPal Certified shops can diagnose and repair your 1997 Pontiac Grand Am. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

Popular Answer

Tach causing automatic transmission shifting problems

What is your question?

Can manually shift car beteween 2nd and drive

What makes this problem better or worse?

When tach works.... It shifts fine

Visitor

in Newark OH

Oct 5, 2020

1 Reply

Popular Answer

DaveJMon Oct 6, 2020

Hello, the tachometer is merely a gauge that shows data provided to it about engine speed. It's not possible to know what - if any - correlation between symptom and component operation is. Hands on testing is needed. I would suspect that there is some data missing when the transmission needs it for shift timing. A diagnostic tool for this OBD-II vehicle would be highly beneficial.

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Popular Answer

What are the best Pontiac repair shops?

RepairPal Certified shops can diagnose and repair your 1997 Pontiac Grand Am. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.