Lambda problem discovered?

roadcar2000 · Sep 13th, 2017, 23:37

Thanks to darkness and quiet night have found, I hope, the provblem. Started the car and it was only fireing on 3. Heard the proverbial clck click click of a short. Opened the bonnet and the centre of the coil was shorting to the other two poles. I have a couple of spare coils so changed it. Started the car. Still running rough. Under bonnet heard more clicking and found the Distributor cap had an internal short. Have to buy a new one and rotor arm tomorrow. Bizarre that Lambda Coil and cap should all fail at same time. But in one way lucky I guess. A million thanks for all the help and advice.

Laird Scooby · Sep 15th, 2017, 23:40

The misfire could have poisoned the Lambda sensor with excess fuel. Once you get the other bits sorted, i'd suggest a long, high speed run to burn off any unburnt fuel that has entered the cat to prevent it being poisoned.

It will stink of rotten eggs while it's getting rid of the excess fuel but should ease off once the excess fuel is gone.

Dark nights are great for fault finding ignition though!

Sep 13th, 2017, 23:37	#1
roadcar2000 Senior Member Last Online: Jun 2nd, 2023 11:46 Join Date: Jul 2010 Location: gosport	Lambda problem discovered? Thanks to darkness and quiet night have found, I hope, the provblem. Started the car and it was only fireing on 3. Heard the proverbial clck click click of a short. Opened the bonnet and the centre of the coil was shorting to the other two poles. I have a couple of spare coils so changed it. Started the car. Still running rough. Under bonnet heard more clicking and found the Distributor cap had an internal short. Have to buy a new one and rotor arm tomorrow. Bizarre that Lambda Coil and cap should all fail at same time. But in one way lucky I guess. A million thanks for all the help and advice.

Sep 15th, 2017, 23:40	#2
Laird Scooby Premier Member Last Online: Yesterday 21:06 Join Date: May 2012 Location: Lakenheath	The misfire could have poisoned the Lambda sensor with excess fuel. Once you get the other bits sorted, i'd suggest a long, high speed run to burn off any unburnt fuel that has entered the cat to prevent it being poisoned. It will stink of rotten eggs while it's getting rid of the excess fuel but should ease off once the excess fuel is gone. Dark nights are great for fault finding ignition though! __________________ Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........

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