VXR8 Check Engine Light

[HSV Keith]

Changed down from 4th to 3rd gave the car about 3/4 throttle and the car had a slight serge as if I had driven over a wet drain cover.
Straight after this happened the check engine light came on and has stayed on.
I can't feel any difference in performance but sometimes I think the engine note from the exhaust has changed like a very slight miss fire.
As a guess I was hoping a damaged HT lead.

Any ideas, Thanks

Can you do the pedal trick to get the error code up like you can on the Vectra / Astra

[rich24v]

Plenty of cheap generic Eobd code readers out there which should read basic codes.
Probably won't report actual misfire, but down stream might upset one of the o2 sensors
which you can monitor.

[snowwolf]

They can be a bit problematic on the check engine light coming on, it may remove the EL on a few restarts over a day or two, but as mentioned, buy a cheap £30 Mac code reader from europarts that will clear the fault, what mileage has the car done ? standard leads are not the best to have on the engine.

Edited by snowwolf on Monday 21st December 20:03

[FoxdieUK]

A damaged HT lead would cause the misfire and these engines / ECU are very good at picking up misfires.

The only other thing I've seen causing this is a decat pipe with the rear o2 sensor not disabled in software.

[HSV Keith]

The light has gone out now on it's own.

The cars done about 55000 and on the original leads.
I took my car to Neil for a service a while back and when he changed the plugs he noted that some of the leads look to be on the way out.

A bloke at work is going to bring his code reader in for me to try and I'll see what the error codes say.

Whats the part number for the HT leads ? I think there ACDelco or is it worth just going to the fish for a set of magnecor leads ?

[neiljohnson]

The magnecor from the fish are much better value than the oe stuff
Ht leads have a hard life being so close to the manifolds

[blue666uk]

If the bay and leads are anything like the Monaro, if the leads are left too long, they will just start disintegrating and become a major pain to remove, so if they're starting to deteriorate, a pre-emptive change to some nice shiny Magnecor leads is the way to go!

[HSV Keith]

The only error code stored looks to be a old one from last year p1010.
Now the engine cover is off I think I'm going to do a pre-emptive change as blue666 suggested.
Thanks for the feedback

[Tattooboy]

HSV Keith said:

The only error code stored looks to be a old one from last year p1010.
Now the engine cover is off I think I'm going to do a pre-emptive change as blue666 suggested.
Thanks for the feedback

If you are going to change the HT leads, you might as well invest in some heat sleeves as well for a little more protection.

[HSV Keith]

I have just ordered the leads where do you get the heat sleeves from? I couldn't find them on the monkfish website

Tattooboy said:

If you are going to change the HT leads, you might as well invest in some heat sleeves as well for a little more protection.

[Tattooboy]

HSV Keith said:

I have just ordered the leads where do you get the heat sleeves from? I couldn't find them on the monkfish website

Tattooboy said:

If you are going to change the HT leads, you might as well invest in some heat sleeves as well for a little more protection.

Good ol e-bay

http://www.ebay.co.uk/itm/GM-LS-Engine-Titanium-Hi...

[davegreg]

It's worth buying a code reader, I recently got mine for £11 from Amazon - it sorted my R8 out when the engine light came on.

[HSV Keith]

davegreg said:

It's worth buying a code reader, I recently got mine for £11 from Amazon - it sorted my R8 out when the engine light came on.

What one did you get. The one i tested wouldn't connect but the bloke at work had one that used his laptop

[snowwolf]

I have this one and it reads most usual codes and can clear them as well

http://www.amazon.co.uk/gp/product/B018Z8LXUO?keyw...

[davegreg]

http://www.amazon.co.uk/CAN-Bus-Trouble-Diagnose-D...


This is the one I bought.