High idle and jerks

2010 OPEL CORSA
131,000 MILES • 1.4L • 4 CYL • 2WD • MANUAL
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YASHEN M
  • MEMBER
  • 1 POST
Hi all,

My Corsa Utility Bakkie has an issue with the idle.
the van idles at 1,500 rpm up to 2,000 rpm.
I replaced the ICV with an aftermarket ICV from Goldwagon and reset the ECU by disconnecting the negative terminal.
The idle dropped and was fine for a few hours.
It then went back to 1,500 rpm and also has like a small jerk. sometimes if switch off and start again its idle perfect and then back high. i do sometimes get a fuel smell from the front of the van.

Please assist guys as this is such pain to drive.
Feb 2, 2019 at 1:25 AM
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JACOBANDNICKOLAS
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  • 110,175 POSTS
Hi and thanks for using 2CarPros.

First, this vehicle isn't offered in the US, so I don't have specific technical information on it. However, if you smell fuel, that is a concern. First, check to see if there are any leaks at the injectors, fuel rail, filter, fuel pressure regulator... A leak can cause idle issues because of a fluctuation in fuel pressure.

Next, if you can't find a leak, confirm that the fuel pressure is within the manufacturer's specs. Here is a link that shows in general how to check fuel pressure and regulator:

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

Also, check to see if there are any engine vacuum leaks. A vacuum leak can also cause an unsteady idle speed. Here is a link that shows how to check for one:

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

Let me know if any of this helps or if you have other questions.

Take care,
Joe


Feb 2, 2019 at 10:48 PM