corsa high idle after freeway driving

Hi

Within the last 6 weeks,it's happened 3 times,today the latest,after freeway driving,and stopping at a robot or stop street, 2006 1.4 ute is idling at 1800rpm, and stays there, until I switch off and switch back on.

Any clues on what's the cause?

Thanx/Pete

Oh geez. I had this on a Corsa sedan in 1999 - 2000. had it at the dealership about 20 times. It would also not start every time I turned the key but would always start on the second attempt. After 6 months of *** (trouble) like this I traded it in. Never had an Opel since then.

My wife had a similar problem with her Corsa 1.4 and it was eventually rectified by replacing the wiring loom under warranty.

Good luck.

I had the same thing happen on my old work bantam (2003). Don't know wtf it was but it didn't give any trouble.

Howzit Pete, I have a Corsa and have the same problem, the problem is that their is oil moving up into the Idle control valve, the idle control valve is normally located on top left hand side of the engine, with two spline screws holding it in place, you need to remove the power cable by un-clipn it and then undo the 2 screws, when u remove the idle control valve it will have a spring attached to it, u need to spray Q20 on the spring to remove all the oil move the spring around to ensure it is clean, once you have done that the area which the idle control valve fits in needs to be cleaned, I usually spray Q20 on a cloth and wipe the inside until it is clean, oh u wil find an o-ring in the cavity be sure to clean it but do not break it as it is really hard to find a replacement of that diameter and thickness, this should sort out ur problem.

NB: its a sign that ur car needs a service.

hope this helps

My moms Corsa Lite does it as well as one of my friends.

Darshur said:

Howzit Pete, I have a Corsa and have the same problem, the problem is that their is oil moving up into the Idle control valve, the idle control valve is normally located on top left hand side of the engine, with two spline screws holding it in place, you need to remove the power cable by un-clipn it and then undo the 2 screws, when u remove the idle control valve it will have a spring attached to it, u need to spray Q20 on the spring to remove all the oil move the spring around to ensure it is clean, once you have done that the area which the idle control valve fits in needs to be cleaned, I usually spray Q20 on a cloth and wipe the inside until it is clean, oh u wil find an o-ring in the cavity be sure to clean it but do not break it as it is really hard to find a replacement of that diameter and thickness, this should sort out ur problem.

NB: its a sign that ur car needs a service.

hope this helps

Click to expand...

This would be my diagnosis as well.

I'm not sure if the Opel has the Exhaust Gas Recirculation (EGR) valve, but I disabled it closed on my car because it was fouling the Idle Speed Control (ISC) valve.

Frankie said:

This would be my diagnosis as well.

I'm not sure if the Opel has the Exhaust Gas Recirculation (EGR) valve, but I disabled it closed on my car because it was fouling the Idle Speed Control (ISC) valve.

Click to expand...

Corsa B doesn't feature EGR, regardless of year, models before 2007 don't have any emission reducing measures (13NE/14NE/B16SE engines). 2007 and later (X14NE engine) feature catalytic converter, exhaust O2 sensor and active fuel tank vent valve, they also came stock with power steering. On the later model the exhaust O2 sensor might cause such trouble but in all likely hood the engine management light will turn on.

Apart from the Idle Control Valve (ICV) mentioned above (Darshur's post) you can try just disconnecting the battery for 15 minutes then put it back on, start the car by turning the key alone until it starts. If the car is working correctly you shouldn't need to depress the accelerator pedal to start the car because the ECU opens the ICV enough to allow the perfect amount of air in for a optimal start. It's one of the give away signs on a Corsa's condition, if it's running well it will start basically immediately by just turning the key (like in 1 second), these Corsa's that take 30 seconds of cranking or accelerator pedal to start are not in a good condition (assuming it is stock).

Also if the battery is damaged (IE. one of the cells are dead) or run down the car will also idle higher up to 3000rpm if it's completely buggered. The ECU detects the problem and idles higher to compensate for the lower charge.

Dead cells are common on old batteries, especially when they get hot it becomes a problem, make sure your battery is in good order.

Apart from that you may want to take your car to GM for a ECU update and CO adjustment.

There's not much to service in terms of the ignition system on a Corsa, you can set the CO's, clean the ICV, pretty much that's it.

Take my advice and apart from the ICV don't go fiddling, the system is very sensitive, if you start spraying liquids into the plugs or plugging them in/out the whole time you're gonna end up replacing the ignition system harness (R2K+ from GM, R500 from Scrapyard).

It is the Idle Control Valve, they tend to get sticky with age & heat.
Not a harness problem bcose would do it even after you've switched it Off/On.
Sometimes the ICV itself may need replacement, but try Gnome's cleaning proces first. I would not use Q20 tough. With Air in the manufould comes fine dist aswell. Oil (even thin one as Q20) + dist = sticky grim. Use a bit of Carb Cleaner instead.
Not a battery problem either (but check anyway), bcose would do it all time especialy after start.

Just my 2 cents...