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EML - macski

My 1999 Toyota failed because the engine managment light was on, it passed all its emission tests so why is it a failure. Further more I do not get how it can be part of an MOT if it is not a legal requirment to have a EML. My Alfa Romeo has a screen were it tells you that there are no faults or ifthere are what fault it is, so in the case of the Alfa why have a EML?

Confused!!!

PS:Cause of the fault on the toyota was a lambda heater.

EML - sandy56

The new MOT rules are a more strict than before. Any EML light that is activated is a FAIL. You need to ensure that all these warning lights go out and no tampering.

EML - macski

The new MOT rules are a more strict than before. Any EML light that is activated is a FAIL. You need to ensure that all these warning lights go out and no tampering.

Yes get that, but my question is still how can something be failed if it is not a requirment in the first place.

It is like getting a fine for something that is not against the law

EML - RobJP

The new MOT rules are a more strict than before. Any EML light that is activated is a FAIL. You need to ensure that all these warning lights go out and no tampering.

Yes get that, but my question is still how can something be failed if it is not a requirment in the first place.

It is like getting a fine for something that is not against the law

You're missing the point entirely.

Here's an example. Back in the 50s and 60s, it was not a requirement for cars to be fitted with seatbelts. However, where they were fitted, then they came under the MOT and had to be in good condition.

The same with your EML light. It may not have been a requirement to have one fitted, but where a manufacturer DID fit one, then it MUST function 'as intended' - i.e. it must come on with the ignition, and extinguish once the engine has started.

EML - Bromptonaut

Here's an example. Back in the 50s and 60s, it was not a requirement for cars to be fitted with seatbelts. However, where they were fitted, then they came under the MOT and had to be in good condition.

An excellent example. Front seatbelts were not required to be fitted until 1968 and another fifteen years passed before their use became compulsory. A 1966 car should still have failed if fitted with belts but showing corroded mountings.

EML - elekie&a/c doctor

Think yourself lucky the eml warning was on ,otherwise you would never had known there was a fault with the emission/engine control system.

EML - macski

Think yourself lucky the eml warning was on ,otherwise you would never had known there was a fault with the emission/engine control system.

It was only the heating element that was not working, many cars are not fitted with that, the emmisions were fine and passed its MOT on them

EML - macski

The new MOT rules are a more strict than before. Any EML light that is activated is a FAIL. You need to ensure that all these warning lights go out and no tampering.

Yes get that, but my question is still how can something be failed if it is not a requirment in the first place.

It is like getting a fine for something that is not against the law

You're missing the point entirely.

Here's an example. Back in the 50s and 60s, it was not a requirement for cars to be fitted with seatbelts. However, where they were fitted, then they came under the MOT and had to be in good condition.

The same with your EML light. It may not have been a requirement to have one fitted, but where a manufacturer DID fit one, then it MUST function 'as intended' - i.e. it must come on with the ignition, and extinguish once the engine has started.

Yes but it now the law and only on post 65 cars. There is no requirment for a EML.

Edited by macski on 12/08/2018 at 21:26

EML - RobJP

Yes but it now the law and only on post 65 cars. There is no requirment for a EML.

Yes. I know. There is no requirement for an EML.

BUT, IF one is fitted, then it MUST work as intended.

I feel like I'm banging my head against a wall here.

1980s cars, some of them have ABS systems. If a car has ABS fitted, then it MUST work as intended. If it didn't have it fitted, then the rule doesn't apply.

Much like indicator repeaters, or catalytic converters, or even reversing lights, when all those things were options.

Fitted from new = must be present and working. Not fitted from new = irrelevant.

It's not rocket science. It's common sense.

EML - Gibbo_Wirral

If the part wasn't working properly then the car wasn't running at peak efficiency.

If the lamba heater wasn't needed then surely the car wouldn't have been fitted with one.