Hello! I need to replace this part. It is number 100 in the pic (Valve cold Start). My car is a Fiero GT V6 1986 AT
Does anyone know where I can get it? The Fiero Store does not sell it
I hope someone can find it for you. Not even 10 years ago, I wouldn't have been concerned at all... but I'm realizing now as I get older, that literally parts for these cars are starting to become really hard to find. Your last option is to remove it and have it rebuilt by an online fuel injector shop (which is at least an option). I just spent like 8-9 minutes searching Rock Auto, eBay, and even the equivalent Bosch number for it... couldn't find it. Doesn't mean it doesn't exist, I just couldn't find one.
1985 - 88 corvettes use the same injector and they are still available at most injection shops. I gutted mine and use it as a manifold plug as i have sequentia injection and had no need for if. the port for it on my fuel rail now has a fuel pressure sensor for my ecu.
C4 Cold Start Fuel Injector Rebuilding Service 1985-1988
"This is a rebuilding service (Discontinued by GM) offered by Corvette Salvage for a C4 Cold Start Fuel Injector which can be installed on a 1985 to 1988 Corvette."
Thank you all for the answers. I finally decided to remove it
Just curious, how does your car run when you first start it, with it plugged and disconnected?
Also, I just noticed you are from Argentina. My mom was born there, in Buenos Aires too. They left during the Peronista regime, but really cool country.
In a warm climate, the cold start injector may not even be necessary.
I've never experimented with mine, but maybe on a cold day next winter I'll unplug the cold start fuel injector switch on my Formula to see how much more difficult it might be to start the engine.
Originally posted by 82-T/A [At Work]: Just curious, how does your car run when you first start it, with it plugged and disconnected?
Also, I just noticed you are from Argentina. My mom was born there, in Buenos Aires too. They left during the Peronista regime, but really cool country.
My car has several problems with the ignition system. I changed injectors, distributor, some vacuum lines are disconnected and have to be reinstalled, etc. Until I fix everything it's not going to work well. In any case, starting with or without a cold start valve should be the same, because the average temperature in Buenos Aires is not too cold. Speaking of my country, it is very beautiful, but unfortunately Peronism has been ruining everything for several decades. I understand your mother. Many people have left and are currently migrating to other countries, because the situation is getting worse.
A few years ago I tried disconnecting my cold start injector. I was in warm weather (summer I think, in CA). The car took an annoyingly long time to start. I fiddled with the ECM tune hoping I could patch that problem out, which might be possible, but I failed so I plugged it back in.
It seems that a lot of people talk about disconnecting it in a warm climate but that caused an obvious negative reaction on my car. It still started of course, but not well. Even when warm the CSI adds a little fuel, and it's more atomized than what you may get from the port injectors.
[This message has been edited by armos (edited 06-14-2023).]
I'm in Colorado, but had an experience with this similar to armos - with the CSI disconnected, my 88 GT would start, and start reliably, but had to crank far longer before it caught. It started much more quickly with the CSI, so it stays connected until I swap to a 7730 ECU (soon, I hope)
