Engine Management Light Is On...

[supersub14 1]

Did a search but cant seem to find the answer im looking for, so if there is alreadly a thread on this i apoligise...

 

The engine management light is intermittly on and off for approx 30secs at a time on my L-reg 1.9 8v gti. How do i diagnose whats the problem?

 

Is there a code reader or summit i need to buy? If so where does it plug in? I assume its the plug below the steering wheel on the right hand side but it looks damaged Any other plugs in the engine bay? Or can i work it out using a multimeter?

 

John

[welshpug 1,657]

sounds like you have a Motronic + cat equipped car?

 

edit, this is what autodata says -

 

 

Draper do a cheap box of tricks that'll do the above if you don't fancy cracking out the soldering iron after a trip to Maplin or similar.

Edited January 19, 2010 by welshpug

[supersub14 1]

yeah its the later phase 2 car (1992)

 

So from that photo your saying i have to build a switch of some sort???? Could you explain further please. Sorry, if i sound stupid lol. Like where does it plug into when is built?

 

Hmmm... might just be as handy buying one if there not too expensive

[welshpug 1,657]

you plug it into the 2 pin diagnostic connector as it says, then extract the codes as described.

[supersub14 1]

I assume that the managment light has to be on from when the ignition is turned on for this to work?

 

Mine only comes on after couple of mins or so when the car is warming up

[supersub14 1]

Found this as well:

 

Diagnose Fault Codes

 

so hopefully should sort me out. Cheers WP for pointing me in the right direction. Ive found a Draper code reader on ebay if all else fails lol

[petert 588]

Also try here:

 

http://www.aussiefrogs.com/forum/showthread.php?t=24847

[Roman 0]

I assume that the managment light has to be on from when the ignition is turned on for this to work?

 

Mine only comes on after couple of mins or so when the car is warming up

My bet is on lambda sensor

[welshpug 1,657]

I assume that the managment light has to be on from when the ignition is turned on for this to work?

 

yes, and it will come on and stay on till you start the engine.

 

 

Mine only comes on after couple of mins or so when the car is warming up

 

yes, that's because you started the engine, which if you follow the directions I posted to the letter, you wouldn't have done

[supersub14 1]

cheeky bas....