I have a starting problem, observed I must say (now I think about it)
It doesn't like to start when its cold. Occaisionally it fires, but
generally its a lot of cranking before it splutters into life. Once it
is running, it runs perfectly. i.e no coughing or anything, even under
load, so I guess I'm discounting the ignition system in this, or fuel
delivery once running (read on). I note that I hear the fuel pump run
under the floor for about a second as I switch on the ignition. It
does this every time.
I have a number of points I would like to raise for opinion:-
My cold start valve has failed, or my fuel pump relay is not
activating this. Which is most likely?.
My fuel pump relay is not receiving the 'I'm cranking' terminal 50
signal to tell the fuel pump to cut in again (maybe see below), or
activate the cold start valve. Is there any history on this?.
My tacho signal is not getting to the fuel pump relay to tell the pump
that the engine is turning over and should re-start the fuel pump?.
Is the CIS-E unit temperature output not telling the fuel pump relay
to operate the cold start valve and what should this signal be anyway
(analogue voltage or a digital [on/off] signal).
Is the CIS-E unit working at all? I must say it seems to regulate its
idle speed OK. I know the CIS can work without it.
Is my fuel pump OK. The car has done about 180k miles and I guess its
the original pump. How long do they last (but all is well once its
As I said, the thing is perfect once running. I have replaced the fuel
pump filter (new) and the fuel pump relay with a good 2nd hand unit,
though this reluctance to start is more exacerbated now the weather
has turned cooler here (and I hadn't used the car for a week) in
Any opinions on the above (Tom?).
I'm happy to start detecting, but I'd prefer to start with the
probables before the possibles. Its dark and getting cold and wet and
miserable out there on the drive to be tinkering whilst wifey reels
off all the other 'more important' jobs to be done about the place.