510skater
07-31-2007, 05:14 PM
i have a 1990 s13 i just finished my dohc swap... for the most part everything is running and idling ok but i have one problem, my engine dies when downshifting, it has only done it a total of 3 times, this is how it happened the other day...i was exiting the freeway, i downshift to 4th and its all good...i downshift to 3rd and step on the brake and it dies... i know this sounds like a leak caused by the brakes but i have a new brake booster and m/c i also checked the line at the booster, valve and intake man and it doesnt seem to be leaking, just in case i replaced the whole line and valve but it still does it...this is a potentially dangerous problem so if anyone has any advice or ideas on what could be causing this please let me know