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Power loss

Tiny
JACQUESHOMAN
  • MEMBER
  • 2010 VOLKSWAGEN CADDY
  • 1.6L
  • 4 CYL
  • 2WD
  • MANUAL
  • 150,000 MILES
When I start the engine the first rev is perfect.
When I keep it over 4,000 rpm's it start to lose power until under 4,000 rpm's.
When idle for about three to five minutes and you rev it up the first rev is good there after it just go bad again.
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Thursday, April 4th, 2019 AT 5:29 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,261 POSTS
Welcome to 2CarPros.

This could be a couple different things. What I suggest is to first check fuel pressure. If it is low, it will cause a power loss when there is a load on the engine or the RPM's are high. If the pressure is good, then I want you to check the catalytic converters to make sure they aren't partially plugged.
Here are two links. One discusses how to check fuel pressure and the other how to check a catalytic converter.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Let me know what you find or if you have other questions.

Take care,
Joe
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Friday, April 5th, 2019 AT 6:11 PM

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