Stock 86 GT 2.8 here. About to put new fuel injectors in, wanted to know if anyone experienced symptoms of their cold start system as affected by the cold start switch. I searched but mostly got results stating that they are the same part, which is wrong. My car idles like sh!t and lacks SOME power and wanted to see if anyone has suspected this part of the system. FWIW, the car does start fine, both cold and hot. New plugs and wires, the ignition system meets my mechanic's stringent standards. Thoughts?
...wanted to know if anyone experienced symptoms of their cold start system as affected by the cold start switch. My car idles like sh!t and lacks SOME power and wanted to see if anyone has suspected this part of the system. FWIW, the car does start fine, both cold and hot.
So... can't you just unplug the cold-start switch and see if your idle quality changes?
I can't say I completely understand where you're coming from. Are you suspecting the cold-start injector is spewing fuel when it isn't supposed to? If so, I'd suspect a leaky injector more so than a faulty switch.
[This message has been edited by Patrick (edited 07-06-2016).]
Well, that's exactly what I was hoping to do, simply disconnect the switch, but every other thread was about removing the injector itself so I would rather ask what to expect by doing the former, first.
It seems to be a temperature sensor, basically, and I'm curious as to what I should expect of the system apart from "slightly harder to start". Based on my idle, I felt more as though the injector keeps going despite warm engine temps, though I haven't ruled out a leak, either.
Well, first thing to clarify, just in case there's any confusion... On a properly functioning system, the cold-start injector is only triggered during a cold startup. Just the startup. The cold-start injector has nothing to do with idle quality after the engine starts.
If the cold-start switch is somehow triggering the cold-start injector to open at the wrong time, unplugging the switch should stop the injector from spraying fuel.
If the cold-start injector is leaking, unplugging the switch will accomplish nothing. The injector would still continue to leak as the fuel supply to it is constantly pressurized.
The cold start switch, and if the switch is closed because the engine is cold, only receives power when the key is turned to the START position. Once you stop cranking the starter, the cold start injector is doing nothing.
Have you checked your fuel pressure?
No Check Engine light?
Do the IAT and CTS show the correct temperatures when scanned?
