Engine low idle?

Tiny
ANDRESDELLEVA
  • MEMBER
  • 2013 TOYOTA VIOS
  • 1.3L
  • 4 CYL
  • FWD
  • MANUAL
  • 10,000 MILES
Good day Sirs. Yesterday my wife inform me that our car when she started engine the is low, almost in 300 RPM's. I instructed them to disconnect the for 24 hours to reset the ECU, but to no avail, carried out test drive the car and observe when the engine is hot the idle RPM is normal. In cold state engine started and the engine idles back to low. Thanks
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Thursday, October 23rd, 2014 AT 6:43 AM

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Tiny
KASEKENNY
  • EXPERT
Couple things to check. First we need to make sure there are no vacuum leaks.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Once we know that we need to move onto checking the fuel pressure when this is happening. Here is a guide that will help:

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

Lastly we need to make sure your engine does not have a cold start injector. This vehicle is not offered in the USA so I don't have a manual on it. So I can't tell if there is a cold start injector or not.

So let's run this down and go from there. Thanks
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Monday, December 7th, 2020 AT 3:43 PM

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