TVR Fault Codes

[Yaaan]

Bit of a long shot but not had any joy with Google.

My T350 wouldn't start a couple of weeks back, wouldn't turn over but otherwise seemed fine. It turns out the starter motor had failed so I replaced that yesterday and it now turns over nicely. However, it won't actually start, or more accurately won't stay running. It turns over, catches and sounds like it's about to run before it shuts down and dash displays "Warning Code 4 EFI Fault". I've not been able to find anything that can explain what this might be. Does anyone have any thoughts?

Cheers,
Ian

[EvoOlli]

You need to get a diagonstic connection to the MBE ECU and read out the fault(s) from the ECU.

[Yaaan]

Is there a recommended diagnostic tool for these cars? Is it too much to hope that they are standard OBD-ii?

[PaulleeT350]

Same thing happened to my T350 last weekend with the same error. When I connected the diagnostics it showed a temperature sensor fault which I cleared but it still would not run. It would sometimes catch but die on the throttle. Checked the injectors and spark and all were ok. Removed the crank sensor and it was covered in debris - cleaned and now runs ok so not sure why it threw up a temperature sensor fault?

[Yaaan]

Glad to know I'm not alone!!

I'll try and find my way around the engine bay and give everything a bit of a check and clean and see if that resolves it.

[EvoOlli]

Hi Ian,

if you have a Windows PC you could use either the old TVR Software or my new one, which is free. You'll find it here:

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

You'll need an USB/Serial Adaptor and a Diagnostic Cable, which you will get from all the known suppliers.

[Granturadriver]

EFI stands for ELECTRONIC FUEL INJECTION, so the fault code refers to any problem with fuel mixture.

As far as I understand the diagnostic softwares will not show all faults as "logged faults", but you could see several parameters of the running engine which help to find the cause.

[ninetynine]

always worth disconnecting and re connecting battery
to reset ecu it sometimes works

[Yaaan]

EvoOlli said:

Hi Ian,

if you have a Windows PC you could use either the old TVR Software or my new one, which is free. You'll find it here:

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

You'll need an USB/Serial Adaptor and a Diagnostic Cable, which you will get from all the known suppliers.

Thanks for this. I'll have a read later and see what I can get sorted.

[ukdj]

The efi fault can be caused by not connecting the airbox sensor before starting, just reconnecting the sensor will not make the fault code dissapear - it requires resetting via the diagnostic software.

As you have had the starter changed recently I guess the airbox has been out.

Get the software and read the codes see ehat it reveals, clear them down and attempt another start and see what if any re-occur.