The fact that in a crash you normally stall the car anyway ... And with just the ignition on the pump will only prime for 2 seconds ...

I wouldn't think it was your inertia switch they work or don't work ...

My vote TPS , vac leak ( rovers are really sensitive to this as I'm guessing you know ) or CAS ,

Beanie

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I am the son of the STIG

HOTBRICKS
http://hotbricks.org.au/

'65 NCF MINI.....
'69 MINIMATIC.... 9 year resto still on the go

Thanks guys, yeah im starting to think crank angle sensor the more i read up on it. It was the only sensor that was absolutley filthy. Interesting thing i did notice the more I pulled apart is that the socket that connects to the idle stepper motor has 3 wires attached. only 2 are connected the other one has snapped off and the whole plug seems to have melted?! Could this be one of the many things causing my issues?

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88 Rover 1.3i "Reggie"
99 Rover 1.3i “Grover”
12 Mini Cooper S "The shitter"
17 Mini Clubman JCW “Noddy”

Thanks guys, yeah im starting to think crank angle sensor the more i read up on it. It was the only sensor that was absolutley filthy. Interesting thing i did notice the more I pulled apart is that the socket that connects to the idle stepper motor has 3 wires attached. only 2 are connected the other one has snapped off and the whole plug seems to have melted?! Could this be one of the many things causing my issues?

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88 Rover 1.3i "Reggie"
99 Rover 1.3i “Grover”
12 Mini Cooper S "The shitter"
17 Mini Clubman JCW “Noddy”

Careful, the fuel system isn't under pressure in a carby car. Not sure what it runs at in an SPi but I still wouldn't not fit the cut off switch.
Your insurers, if you have one, would probably be very interested too.................

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'98 Mpi Sportspack + 7 port alloy head

pretty much no other manufacturer has an inertia switch, they are a complete waste of space. the fuel pump will stop pumping after a few seconds once it stalls anyway. your insurance company wouldn't give two hoots that it's gone. they should be more concerned that it's there because when your mini cuts out when you drive over a decent speed hump and comes to a stop and you might get hit by a bus.

Um...... bulls&*t

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A recent study found the average Aussie walks about 900 miles a year
Another study found Aussies drink, on average, 22 gallons of alcohol a year
That means, on average, Australians get about 41 miles per gallon

Kind of makes you proud to be an AUSSIE

ok then name an aussie made car that has one. then go outside and stall your spi mini and see how long the pump runs for.

Ford Falcon.

well i admit i am wrong. apparently falcons do.
ok then name a aussie car that has an inertia switch that goes off over a decent speed hump.

Ford Falcon.

Yes the old ford falcon is a quality car.........

it takes a bit to make me laugh but that worked.

The early injected Falcons (like the XF) had an inertia switch that used to cut out on a big pot hole or a very good speed hump. I knew a lot of people that had their motors cut out after a bit of a whack. They would get the NRMA to tow it back to town where the local auto electrician would charge them 4 hours labour to press the button on the reset.

Lots of other cars used them too.
A lot of car sense oil pressure before starting or shutting off the pump, which can be a pain if there is a leak down problem in the system and you have to crank the motor for ten seconds before the injectors get pressure. (Commodores do this at times)

I don't know what my wife's Telstar/626 uses. The pump still runs with the motor stopped.

Have tried the above mentioned things, car still idles fun but backfires in the inlet manifold if you rev it not so gently, then coughs and splutters and carries on. Am thinking along the lines of coverting back to carby. This car has spent more time off the road due to spi problems than on the road and it has never run right. Its already had a new throttle body and even that didn't improve the running. Anyone know whats involved with converting back to carb?
cheers

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88 Rover 1.3i "Reggie"
99 Rover 1.3i “Grover”
12 Mini Cooper S "The shitter"
17 Mini Clubman JCW “Noddy”

did you replace the CAS or just look at it?