MG ZTT CDTi Intermittently cuts out

[Ben35]

Hi everyone, I own a 2003 ZTT CDTi 135 and over the course of the past year I seem to have an electronic gremlin causing my car to cut out after ignition as well as occasionally cut out while driving.

So far I've had 4 mechanics look at it, I've also stripped it down and cleaned the high pressure fuel regulator. I've also had the keys,alarm and immobiliser checked with 5 different diagnostics units and no codes came up.

The car is mechanically sound cause when it runs, it runs brilliantly. It's been serviced and checked over from front to back inside and out, but still this one little issue keeps happening.

If anyone can help, it would be gratefully appreciated because this is a beautiful car and I don't want to scrap it but I need this gremlin gone
Cheers. Ben

[Number 6]

First port of call for me would be the under bonnet pump electrical connector and/or the pump itself.

Give the connector a clean and put some vaseline in to the connector and reconnect.

might not help but at least you will know it is ok.


If the pump does not run give it a tap with a blunt insrtrument.


The above is assuming it is not a face lift model which does not have an Under Bonnet pump.

[Ben35]

It's a pre facelift model, I've checked the entire fuel system from tank to common rail, it's running 55,000 kvi at the high pressure pump, it seems to be an issue at the Ecu possibly

[Mickyboy]

Originally Posted by Ben35

Hi everyone, I own a 2003 ZTT CDTi 135 and over the course of the past year I seem to have an electronic gremlin causing my car to cut out after ignition as well as occasionally cut out while driving.

So far I've had 4 mechanics look at it, I've also stripped it down and cleaned the high pressure fuel regulator. I've also had the keys,alarm and immobiliser checked with 5 different diagnostics units and no codes came up.

The car is mechanically sound cause when it runs, it runs brilliantly. It's been serviced and checked over from front to back inside and out, but still this one little issue keeps happening.

If anyone can help, it would be gratefully appreciated because this is a beautiful car and I don't want to scrap it but I need this gremlin gone
Cheers. Ben

Before going any further, has it had a T4 session? or has it just been scanned by a EOBD type of device?
The difference between a good knowledgeable T4 expert and a general mechanic with a EOBD type scanner is huge.
Mick

[Number 6]

Originally Posted by Ben35

It's a pre facelift model, I've checked the entire fuel system from tank to common rail, it's running 55,000 kvi at the high pressure pump, it seems to be an issue at the Ecu possibly

Well if you checked it when it was running you would get 55,000kvi.But have you tried it when it has cut out ? and before you try starting it again.

[Ben35]

No it hasn't had a t4 specialist, if you could recommend anyone that is a t4 specialist that is either local to Hornchurch Essex or that can travel that would be awesome

[Ben35]

The pressure reading was when it had cut out and with the ignition on

[Number 6]

Originally Posted by Ben35

No it hasn't had a t4 specialist, if you could recommend anyone that is a t4 specialist that is either local to Hornchurch Essex or that can travel that would be awesome

here is a list of Members with T4.




Phil-T4 - Milton Keynes, Buckinghamshire
BigRuss - Liversedge, West Yorkshire
cb750chris - Portsmouth
trikey - Barton upon Humber
Jules - Conwy, North Wales
Rover Link - Liverpool
MGR South Devon - Newton Abbot, Devon
Astraeus - Tayport Fife, Scotland
ARDS - Newtownards, Northern Ireland
marinabrian - Newcastle
__________________

[Mickyboy]

Phil T-4 will travel to you no problem 👍

[Kennyeth]

Originally Posted by Ben35

Hi everyone, I own a 2003 ZTT CDTi 135 and over the course of the past year I seem to have an electronic gremlin causing my car to cut out after ignition as well as occasionally cut out while driving.

So far I've had 4 mechanics look at it, I've also stripped it down and cleaned the high pressure fuel regulator. I've also had the keys,alarm and immobiliser checked with 5 different diagnostics units and no codes came up.

The car is mechanically sound cause when it runs, it runs brilliantly. It's been serviced and checked over from front to back inside and out, but still this one little issue keeps happening.

If anyone can help, it would be gratefully appreciated because this is a beautiful car and I don't want to scrap it but I need this gremlin gone
Cheers. Ben

Do you know what a Plenum Chamber is ??
if not do a search on here and see what damage a blocked one with water in can cause.
Ken.