Talk Morgan Forums Morgan Sports Cars Morgan Aero 8, 2012< Plus 8, SuperSports, Coupe & Aeromax Another day - another warning light!

OBD2 reader arrived on Friday - and after I installed the 9V battery I plugged it into the the Morgan and gave it a go.

It found the CAN straight away and was showing a P013C code - which is an Oxygen sensor. Convinced it was nothing major I reset it.

My guess is the long, 2nd gear, partial throttle hill climb (stuck behind traffic) wasn't appreciated by the fueling - probably overviewed resulting in elevated values (at a guess).

Anyway, the only concern I really have is that the PAS fluid reservoir should be moved further away from the engine block. Anyone carried out such a modification?

It should also tell you which sensor it is, something like "Bank 2 sensor 2, O2 sensor". If it is sensor 2 it is the post cat sensor.

I am certainly no expert on this topic but it seems to be a common problem with cars (not just Morgan) fitted with sports exhaust systems. After the fortune spent by Ford, BMW, et all, to get the fuel map correct with a standard exhaust we go and stuff it all up by fitting something decidedly non-standard. To get better performance we move the cat further from the motor and make it more free flowing. The result of this is that, not only does it alter the fueling requirements, but it is more difficult to get the cat to operating temperature, where it "lights-off" and and burns all the, well a lot of, the nasties in the exhaust gasses. Under certain circumstances it can get too cool and cease to function as it should. This in turn triggers the MIL light. (yes, I know it is a tautology "malfunction indicator lamp (MIL)")

In some cases it is so difficult to get to operating temperature that the car can fail an MOT. If you have any doubts the best thing is to book the test for an exact time, give the car a good "Italian tune up" and take it in for the emissions test without stopping the motor

Naturally it could also be a faulty sensor.

Experienced intermittent fault light on my Series 4 Aero with Aero Racing exhaust system. Diagnosed on first occasion as Code 001 2C85 Oxygen Sensor 2, Bank 1-4 cylinders behind Catalyst. Reckoned could be either faulty Sensor or fuelling issue. Reset carried out. Experimented with fuels and reappeared again after lower octane fills.

Subsequently reappeared on a couple of occasions (Croatia 2013 & Scotland 2014 with limited fuel availability)and reassuringly disappeared having refuelling after a couple of tankful's of highest octane. Now tend to alternate mix & match.

They could probably do with a CAT pre heater in that case - in basic terms a Hot Air blower that gets the CAT upto temperature rapidly, this however would add more complications to the exhaust system.

Pleased that "George" has a standard MMC exhaust with normal tailpipes. Silent at small throttle openings, makes a wonderful noise as soon as the loud pedal is applied!

I've had enough of CAT related MIL warnings with the Roadster. On the Pus 8 the cats are enclosed, so don't suffer from cold shock when going through a puddle.

Hi Ken, I'm hoping you have your hose by now, but if not why not take it off and go to your local high pressure hose specialist and ask them to make one up. I now of a Saab owner that had a similar problem and got one made up for a third the cost than if a genuine one. Just a thought.

Firing up the SS in the garage causes the whole garage to vibrate - but on "normal/city" throttle openings it can be a very quiet/docile thing. It is only with provacation that it comes alive. I can bever work out whether I prefer the low rev rumble, the mid-range growl, or the high rev machinegun - all fantastic though.

Hose is good - but I think it relates to the PAS reservoir getting too hot