Hello again Simon -
Thank you for your further info..
Ok - there are two things here that come to mind on this .
The first thing to so though is double check all your electrical wiring / connections - espeically earths.. and the piping around the engine - the air / vacuum piping - Any bad connections / leaks in these hoses causing un metered air ingress will cause what you have - so thats always the first thing to check - as a general check - before anything else...
If all is well carry on as follows -
Now a known fault is with the ECT sensor... thats the engine coolant temp sensor... this sends info to the Ecu - for it to then command the other engine management functions correctly. A faulty sensor here will cause what you have.. its a known fault too-
The other that will / can cause what you have is, a a dirty TB - thats the Throttle body unit..
We recommend cleaning of the TB unit internally- you need to remove the top cover to gain access and use a spray cleaner ( carb cleaner spray or suck like that you can get from any good car shop )--and thoroughly clean the inside barrel of the chamber - ensuring you clean the edges of the throttle plate -and , where the plate closes on the walls of the chamber when the throttle if off / closed...
Apart from the engine being in good condition service wise - ie, new or decent spark plugs -and of the correct rating / heat type, one or the other as above is the usual fault with what you have -
The other thing to mention though is - which is why I asked you about the EML ( engine management fault light )... if that is on as you say p then the ECU / management computer, will have logged fault codes re the fault you have... So - its advisable to have a local garage at least read the fault codes for you - ( this is done with suitable plug in diagnostic equipment ) -and then go from there with the results of the code test...
find the fault code test gives you another and / or different fault to the above - in any event, its normal practice to have the codes read if the EML is on -and go with that from there - Either way then as above, will see this issue cured / sorted out for you..
If there is anything more by all means
get back to me and we can carry on... >> Meantime >>>>
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for me - Thank you
in advance for that...
You can and are most welcome to get back to me anytime you might need - clicking the OK ratings does not close you out at all..
Kind Rgds Simon - MIKE.