Engine light coming on.

[Nanos]

Hey Guys,

I have a VXII LS1 and on these cold mornings we have been having the engine check light has been coming on.

It seems that it is only coming on when i have the throttle wide open. Once i back of the throttle it then goes back off. It has only been doing it in the mornings and for the first 20mins of driving. I always let the car warm up before i drive off. Normaly let it idle for 5 minutes first thing before i drive off.

Im not sure if i can read any codes that it is logging as im new to the LS1 world. I know with my old VS V6 i could but not sure if its the same with the LS1.

I have the usual larger MAF pipe, M.C.A.I, 2 hole mod etc done. Do you think that maybe its just getting too much cold air and going out side its limits.

[accentstencil]

Unfortunately you can't read the codes without a scantool, so you will need to go somewhere where they have a tech 2.

[Nanos]

damm damm damm. Any ideas what it may be???? or what i can do to try and eliminate the fault.

[accentstencil]

It could be anything, I would only be guessing when I say throttle position sensor.
I know how you feel about not being able to read the fault codes since buying an LS1. I bought a scan tool and lately my engine light comes on whenever I drive but the scan tool says I have no fault codes logged. Just waiting for the next service to find out what it is.

[Nanos]

That really sucks. didnt want to go to a dealer they will just rip me off. Might look at getting a scan tool.

I was thinking it could possibly just need a retune. Have done a few mods to it lately. Could do with with a touch up tune.

[stocky]

maybe its leaning out at WOT and its giving an error code for that?

[Nanos]

thats what i was thinking it was doing. might get a scan tool this week and see whats going on with it. Just dont want to get tune just yet. wanted to do mafless and otr all at the same time.

This really sucks not knowing what going on.

[chargedvx6]

Is the car auto or manual? Check engine can also relate to the trann as well. It is actually the powertrain warning light even though it is a pic of an engine. Trust me I have seen it too many times on my car

[Nanos]

Its auto, But one thinkg i noticed today while driving to work its not actually related to WOT. It comes on at high revs, It comes on at about 4500rpm no matter what gear (only tried 1st and second though) and no matter your throttle position.

Im now thinking it could be the o2 sensor as i had high flow cats fitted about a month ago and the selant they used may have damaged sensor.

[Doctor Bob]

give me a buzz on the weekend, ill have a tech2 with me, easy to sort out whats going on then.

Rob

[Nanos]

That be great if you could have a quick look at it. and day you prefer me to give you a buzz

[Doctor Bob]

you still have the same mobile number? if so ill give ya a buzz on saturday sometime.

Rob

[Nanos]

i think i have ill PM you just in case

[cxcxcxvcvcvc]

It could be anything, I would only be guessing when I say throttle position sensor.
I know how you feel about not being able to read the fault codes since buying an LS1. I bought a scan tool and lately my engine light comes on whenever I drive but the scan tool says I have no fault codes logged. Just waiting for the next service to find out what it is.

Im having this problem with my vs v6 calais! engine light comes on everynow and then and then after i turn car off and restart it its gone! Done a check and no fault codes have been logged
Also when the eng lights on the car still runs fine! although the car seems to every once in a while misfire like its about to stall? !BUGGER!

[KiWi1]

Once its logged a code, it stays there until its cleared

[Nanos]

from memory it will clear after a certain amount of start cylces or something like that. well thats what i thought.

I prob shouldnt do that. Have thoughts. LOL