https://passionford.com/forum/ This forum is for discussion of all things pertaining to the Ford Sierra Cosworth. en Sat, 18 Apr 2026 11:58:16 GMT vBulletin 60 https://passionford.com/forum/images/misc/rss.jpg https://passionford.com/forum/ https://passionford.com/forum/ford-sierra-sapphire-rs500-cosworth/504320-cutting-out-under-boost-new-post.html Sun, 29 Mar 2026 02:50:06 GMT My 1988 Sapphire was cutting out when giving some beans on my way back home, when driving "normally" the car seemed fine. When going up a hill and to get past a slow moving truck I have it a bit extra and then the car completely cut out and I was able to pull over. The car then started again and I was able to nurse home however now unable to start. Any ideas what the cause(s) may be? Cheers ]]> Ford Sierra/Sapphire/RS500 Cosworth nzcossie https://passionford.com/forum/ford-sierra-sapphire-rs500-cosworth/504320-cutting-out-under-boost.html