05-03-2015, 02:06 PM
Join Date: May 2013
Location: Bethesda, MD
Total Cats: 0
MS3 idle droop help
When I got my MS3x last year and installed my turbo kit, I would get an occasional stall when the a/c would engage. They didn't occur too frequently and the car would otherwise idle and drive beautifully, so I essentially left it alone. I was daily driving the car at the time.
Fast forward two motor builds, and a haphazard "pro" tune performed by a local shop, now having issues idling without a/c being on.
I am having problems returning to idle after a blip, staying in CL idle when blower motor+headlights are engaged and the subsequent stalling that occurs once the car falls off of the ramp up out of CL idle. The car will also stall when sitting at a light and the fan (FM stage 2 Spal) engages.
Hope that made sense. I have attached an .msq and log of engaging and disengaging lights+blower motor. So far I have adjusted idle ve settings, adjusted throttle screw to ~100rpm under target with idle valve at 0%, recalibrated TPS to no avail.
Any ideas? I apologize if this is a stupid question, I spent the past few weeks researching this but can't seem to get anywhere. Really frustrated as I miss dailying the car but having to balance three pedals with two feet/stopping the car with the handbrake in order to keep revs up to avoid stalling is getting really old.
94, MS3x, GT2560r, FM/begi supporting parts, ID1000s, Supertech 8.6 84mm/Manley/ACL/ARP/BE pump
Last edited by cmalouf; 05-03-2015 at 02:28 PM.