Engine warning light.......any ideas ??

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fossyant

Ride It Like You Stole It!
Location
South Manchester
Will need clearing for MOT. Unfortunately, the Engine Management Light can mean many many things, so reading the code will tell you what - sometimes detecting poor emissions (lack of use) other times it could be a broken sensor or misfire.
 

Bonefish Blues

Banging donk
Location
52 Festive Road
I have a 65 plate Astra, petrol auto. Very low mileage (less than 10K).
It gets a regular service as required.
Today a warning light came on. Its a sort of oblong and the colour is orange.
Mr Google seems to indicate it could be emissions/catalytic convertor.
I feel a trip to my local garage coming on but just wonder if this is familiar to anyone ?
If so, does it sound expensive :ohmy:

Being serious for once...

Has it got wavy heat lines coming out of the top of it? If so catalyser warning, so definitely an issue there.

If it's like a wee engine with no wavy lines, then it's an engine management warning light, so code reading will help - but short local journeys can be an issue, so let your local garage know your journey profile.
 
OP
OP
Dave7

Dave7

Legendary Member
Location
Cheshire
Being serious for once...

Has it got wavy heat lines coming out of the top of it? If so catalyser warning, so definitely an issue there.

If it's like a wee engine with no wavy lines, then it's an engine management warning light, so code reading will help - but short local journeys can be an issue, so let your local garage know your journey profile.

No wavy lines.
I am tempted to give it a blast but frightened it could pack in on the mototorway.
 

alicat

Legendary Member
Location
Staffs
The engine warning light came on during a long journey on a very hot day when I was on the way to an important appointment then going house sitting in France. I was convinced it was a radiator warning light. A helpful garage set me right and said that I could wait to get it checked if the car was running okay.

About a week later, I noticed that the light had disappeared. Saved me a trip to my own friendly mechanic.
 

Jody

Stubborn git
No wavy lines.
I am tempted to give it a blast but frightened it could pack in on the mototorway.

Doubtful it would pack in. Make sure your oil is topped up and it has coolant.

Dash EML are mostly mundane sensor issues rather than anything major. It could even be something as simple as a coil pack or spark plug breaking down.
 

SpokeyDokey

67, & my GP says I will officially be old at 70!
Moderator
Doubtful it would pack in. Make sure your oil is topped up and it has coolant.

Dash EML are mostly mundane sensor issues rather than anything major. It could even be something as simple as a coil pack or spark plug breaking down.

Same issue and was a coil pack on our previous car - VW.

Didn't cost much to have fixed.
 

fossyant

Ride It Like You Stole It!
Location
South Manchester
Same issue and was a coil pack on our previous car - VW.

Didn't cost much to have fixed.

Coil pack and crankshaft sensor on mine. Different times. Code reader told me which coil pack was dodgy, so swapped cylinders and could definately tell. Crankshaft sensor fail made the car run like a bag of spanners. But even a small fault will trigger the light.
 

Jody

Stubborn git
Same issue and was a coil pack on our previous car - VW.

Didn't cost much to have fixed.

I keep spares in the boot for when failure strikes. They are almost consumables for VAG platform.

On holiday in Norfolk last week when the car started mis firing. Got my other half to read the codes on my phone before we found somewhere to stop. One bike multi tool and 5 minutes later the duff coil was binned and the mis fire was gone.
 

fossyant

Ride It Like You Stole It!
Location
South Manchester
I keep spares in the boot for when failure strikes. They are almost consumables for VAG platform.

On holiday in Norfolk last week when the car started mis firing. Got my other half to read the codes on my phone before we found somewhere to stop. One bike multi tool and 5 minutes later the duff coil was binned and the mis fire was gone.

Yup, my son ended up stranded in Belgium with a wiring fault to one coil pack ! VW !

I have Nissans, don't keep any spares as it's so rare you get failures. 140k miles and 20 years for a coil pack to fail. Cost £30-£40 to buy - didn't fail completely, but started throwing codes - cleaned it, kept going until new part arrived. Code readers are a must.
 

fossyant

Ride It Like You Stole It!
Location
South Manchester
Definitely. Given that torque pro and a reader is about a tenner.

Great bits of kit. My son has a more expensive VAG compatible one that does loads more 'stuff'. I'm happy with the reader !

You don't always need the reader - Nissan's have a secret system of reading the 'flashes' on various lights. I have issues with the drivers seat air bag connector - throw's the air bag light once in a blue moon. A quick 'secret' ignition sequence throws a code, you check it to the on-line manual. Mine is the contacts are grubby - very sensitive. Clean up, re-connect, re-run the sequence, systen checks again, then clears the code.

The code won't clear if there is a permanent fault though.
 
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