stalling occasionally on idle when braking

Post Sun Oct 30, 2011 6:12 pm

hi all, getting a few issues still with my m52 conversion, it has a propensity to stall especially when applying the brakes which i put down to the vaccum change. anyway it's intermittent and annoying so i want to try and get it sorted so was wondering if anyone has any ideas?

I've swapped the icv for another one and gone through all the hoses and can't see any leaks. i plugged it in my machine and it doesn't come up with any fault codes other than the exhaust flap which i obviously don't have.

any ideas?
cheers
Kev

Post Sun Oct 30, 2011 9:22 pm

I believe I encountered this when I had braking issues and it was the result of a vacuum leak in the brake system. Check the servo and master cylinder O ring is intact and the vacuum pipe to the inlet is all good with a 1 way valve.

Mine used to hiss when I turned the engine off as well.

Post Sun Oct 30, 2011 11:21 pm

i'll have another look in there then, cheers for the idea.
Kev

Post Mon Oct 31, 2011 4:19 pm

hmm changed my icv for my spare one and it's worse now than previously! i checked the non return valve by blowing/sucking it and it seems to be working ok and i searched high and low for air leaks but cannot find anything. I haven't removed the servo yet though to test the o ring there as i've run out of time but i think i'll run the engine on idle and cap off the servo temporarily which should eliminate it i believe.
cheers
Kev

Post Mon Oct 31, 2011 7:23 pm

If you think its something to do with the servo just blank the vacuum hose off and drive it with unassisted brakes for a while to show any differences

Post Thu Feb 09, 2012 8:28 pm

kevo wrote:hi all, getting a few issues still with my m52 conversion, it has a propensity to stall especially when applying the brakes which i put down to the vaccum change. anyway it's intermittent and annoying so i want to try and get it sorted so was wondering if anyone has any ideas?

I've swapped the icv for another one and gone through all the hoses and can't see any leaks. i plugged it in my machine and it doesn't come up with any fault codes other than the exhaust flap which i obviously don't have.

any ideas?
cheers
Kev

have you got a M50 manifold on it ?