11 replies to this topic

[porkpie2310]

Hi All...

 

I have an issue im hoping uyou can help with... I have a 2000 Cooper which has a fault and keep cuttiong out. This can be driven round for 15-20 minutes and will cut out like stalling, sometimes will restart for a few seconds and then die again and will not start... after leaving it for a while (45mins +) it will restart again and is able to drive until it does the same again... I called out the AA when it first happend and the guy suggested the Cam Sensor so I replaced it but same again when taking it for a test drive... On another persons advice I replaced the fuel pump and took it for a drive round the housing estate, only for it cut out again and need pushing home... I dont have a fault code reader and I dont really have that kind of expendable cash to buy one and right now im not sure what the issue could be but im hoping someone on here can give me an idea... Any help would be appreciated, Paul

[KernowCooper]

A fault code reader would be the way to go on a mpi and save a lot of time. I will shift this into the MPI section and maybe someone near can scan it for you

[zony]

Could be a number of things, but sounds fuel related. Can you hear the pump clicking a few times when you initially turn the key.

 

I had similar problem. Turned out to be a partly fried wire in the connector behind the air filter to the right of the throttle body. Its a 13 way connector and the feed for the fuel pump goes through this block. Check for scoring inside on the yellow flat plate. A heavy brown wire leaves this block through the bulkhead.

[nev_payne]

When the engine stalls, what happens when you try and turn the ignition/engine over straight afterwards?

[porkpie2310]

Nev, After it stalls, if I try it straight away it starts and dies after a second and then won't start again...

Zony, when you turn the key you can hear the pump engage and whine like does when it starts... I thought fuel which is why I changed the pump but still cuts out...

[nev_payne]

Worth replacing the fuel filter perhaps?

[Fossy313]

I'd say that's a good place to start fuel filter might have something to do with it

[mini.30]

I had a similar problem with my 2000 mpi, turned out to be the main relay unit (by the brake servo). This contains the fuel pump relay which was the fault on mine, may be worth changing. If you find the part number and search it on ebay there are some cheap ones, used on many rovers with the mems ecu's. I got a new in box one for £6.50!

Mark

[Fast Ivan]

99% certain its the coil pack

[mini.30]

To determine wether it is an ignition fault of a fuel fault, when it is not starting let it turn over for 20 seconds or so then remove a plug and see if it is wet. If it is the fuel is arriving but there is no spark, if the plug is dry no fuel is getting into the cylinder. Another way is to wait for it to not want to start and remove the fuel pressure regulator, see if any fuel comes out of the fuel rail when trying to start, catch it in a rag to keep it off the exhaust.

Hope this helps

[nev_payne]

To determine if it's the coil pack, try this:

https://dl.dropboxus...ot starting.pdf

Edited by nev_payne, 30 July 2013 - 11:25 AM.

[Fast Ivan]

Nev, I removed that attachment as its not complete, reason being that the problems with coil packs often start when they are hot, my guide is for testing when cold.

However the principle is the same just that the readings will be different, I'm sure the expected resistance figures for when hot are in the workshop manual.