Just when you thought it was safe to get back in the MRT

[MrFlibbles]

Driving back down the M40 last night.....booted it, turbo came on boost nicely....and then....engine management light popped up to say hello - it was good to see my old friend back

Car stuttered and backfired like hell, so I pulled over, and cruised along the hard shoulder, the engine running like crap. So I killed the engine, restarted and it was fine. No light.

Curious.

So I read the fault code this morning - it turned out to be the dreaded error code 34 which is:
(taken from mr2oc)

34
TURBOCHARGER PRESSURE--ABNORMAL TURBOCHARGER PRESSURE
--TURBO CHARGER

--AIRFLOW METER/MANIFOLD/TURBOCHARGER PRESSURE SENSOR

--INTERCOOLER SYSTEM

--ECU

The ecu option is out, they *never* fail. AFM sensor is out too, otherwise the fault wouldv'e stayed. I reckon it was a momentary boost spike myself - am I right?

So what caused it (I have a theory) and more importantly, should i worry?

Russ

[Mr E]

MrFlibbles said:

So what caused it (I have a theory) and more importantly, should i worry?

Very cold. Lots of boost.

Were you on WOT at the time?

[MrFlibbles]

WOT?

[Turbo T]

Sounds like a boost cut issue. The ECU protecting the car against too high boost pressure. The Supra does tghe same as stock. You have to fit a FCD or similar to overcome it.

[MrFlibbles]

its never done it before, yes I was "WOT", i'd just whacked my foot down....

[Turbo T]

MrFlibbles said:

its never done it before, yes I was "WOT", i'd just whacked my foot down....

Yeah but it maybe a combination of the Cold air and high load on the Motorway.

[Mr E]

MrFlibbles said:

its never done it before, yes I was "WOT", i'd just whacked my foot down....

Cold air. Boost spike.

You have a bleed/relief valve in there somewhere?

[MrFlibbles]

No.... thats the strange thing.... when I had my new turbo, we had a valve on to test it, and it seemed like my car didnt have a fuel cut - i.e. it would happily boost all the way up to 14psi...

We took the valve off, and its running standard boost at the moment - 11 psi.

[tuttle]

Sticky WG?

[turbo-tastic]

Perhaps an EBC is in order??

I'm sure that if you stress the importance of having the MRT running safely and smoothly (not too mentioned faster!!) then Mrs Flibbles will understand when she doesn't get an xmas present.

[dakkon]

MrFlibbles said:

WOT?

Wide open throttle