r32 gtst weird cold start issue - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

shawn1331 · 08-05-2016, 08:57 AM

Hey guys I'm having a really weird issue with my R32 skyline GTST. It doesn't want to cold start, it will but takes some convincing. I'm copy/pasting from driftworks my post.

"Hey my R32 gtst is having a cold start issue but it isn't my aac, coolant temp. etc.

The car cranks and fires but wont start. i have to pump the pedal for a minute or 2 and it eventally starts, once its running it runs great and idles fine. Also starts up hot no problem. Not really sure where to go from here...consult is showing all my sensors are good."

Someone suggested to check maf and CAS so I replied

"Yeah fuel pumps priming and I'm getting my 40ish psi to start the car fine, it seems like an air issue. But the maf doesn't seem to be affecting it, I've unplugged it to try and start it in limp mode and that didn't do anything either. The voltages all look good and rise and fall with throttle like they should.

Does the IACV affect starting? Can I still start the car if I unplugged it to see if it can start on a base map or something like the maf is supposed to when you unplug it"

I'm not sure where else to check, theres no vacuum leaks or anything and the car runs and drives perfect when warm and starts right up hot.

08-05-2016, 08:57 AM	#1
shawn1331 Leaky Injector Join Date: May 2013 Location: Ontario Age: 31 Posts: 149 Trader Rating: (0) Feedback Score: 0 reviews	r32 gtst weird cold start issue Hey guys I'm having a really weird issue with my R32 skyline GTST. It doesn't want to cold start, it will but takes some convincing. I'm copy/pasting from driftworks my post. "Hey my R32 gtst is having a cold start issue but it isn't my aac, coolant temp. etc. The car cranks and fires but wont start. i have to pump the pedal for a minute or 2 and it eventally starts, once its running it runs great and idles fine. Also starts up hot no problem. Not really sure where to go from here...consult is showing all my sensors are good." Someone suggested to check maf and CAS so I replied "Yeah fuel pumps priming and I'm getting my 40ish psi to start the car fine, it seems like an air issue. But the maf doesn't seem to be affecting it, I've unplugged it to try and start it in limp mode and that didn't do anything either. The voltages all look good and rise and fall with throttle like they should. Does the IACV affect starting? Can I still start the car if I unplugged it to see if it can start on a base map or something like the maf is supposed to when you unplug it" I'm not sure where else to check, theres no vacuum leaks or anything and the car runs and drives perfect when warm and starts right up hot.