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> TPS Testing
cabrioartie
post Mar 18 2026, 05:09 PM
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The car is a '74 2.0l, trying to fix all the items wrong after purchase.

Have found the following items bad and have replaced them:
- MPS
- AAR
- Decel Valve
- CHT
- Spark plugs and wires

I have a bogging/lack of power at about 3000 RPMs, I assumed it was the TPS. But, testing it with the 20 click method I get all 20 clicks consistently.

My question is, is this a valid test to ensure the TPS is good?

And if no, how else should I test it?

And if yes, what else could be wrong to cause the problem?
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emerygt350
post Mar 18 2026, 05:47 PM
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The clicks are a good method. If the TPS is shot you can get a complete cut at cruise or the loss of clicks. Is the bog you mention like a carb or does it feel like a complete engine wide miss?
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cabrioartie
post Mar 18 2026, 08:02 PM
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QUOTE(emerygt350 @ Mar 18 2026, 04:47 PM) *

The clicks are a good method. If the TPS is shot you can get a complete cut at cruise or the loss of clicks. Is the bog you mention like a carb or does it feel like a complete engine wide miss?


Feels like a complete lack of power, and if I continue to push on the accelerator it eventually causes the car to jump forward/or feel like its accelerating, but it never feels like it has the proper power.
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