Engine Light Randomly Comes On

[tir31]

hi, im new here bought an s2 auto rs4 other week because it was cheap + ive always likes them.

anyways noticed twice now engine light comes on stays on for maybe 10mins then goes out, 1st time i was into it abit but 2day was just cruising along, doesnt mis or anything and checked the basic things and all looks good. its running stock cooler and exhaust, only mods being front shafts out and 4wd fuse near battery out, has a boost T runs around 8psi spikes to maybe 10max, and has a wire cut from factory boost sensor near turbo and that wire is now earthed. guess that allows for boost increase?

any help or direction would be great.

jon.

[Springsteen]

I wouldn't sweat it too much mate. The lamp could mean a whole variety of things, most folks will guess straight away its the o2 sensor. If you just got it it could be just learning your style. You could attempt to get the code read from the consult, but really, you will know when there is a problem with your wagon.

[Bronx]

if it flashes, i think it means that its pinging

[tir31]

thanks, it just stays on for a while, got a mate to plug in 2day and said speed sensor, he said half the time he clears it and it wont doit again so ill see what happens. ill change the o2 sensor for the hell of it as ithink fuel cons. is slightly high and go from there.

jon.

[SABBAi]

The Stagea's do like a drink Jon. They're a heavy bit of gear.

I've had the engine light come on in the past for 2 things. A split vacuum line off the manifold and trying to start the car with the CAS plug loose. When the vacuum line was split, the car was miss firing all the time.

[QLDR31]

Any other causes for engine light?

Mine has been coming on lately and doesn't go out until ignition turned off.

I better get the diag cable out.

[coparts41]

what fuel are you guys using, could be the O2 sensor contaminated.

[QLDR31]

My problem ended up being a faulty coil.

[coparts41]

had the same problem with the young blokes S2 , coils also