crossfire issue
Thread Starter
Instructor
Joined: Sep 2018
Posts: 147
Likes: 15
From: New Jersey
crossfire issue
Ive installed a ECM on my crossfire and only 1 injector is running the one closest to the firewall
both injectors are getting power and both fuel lines are cold which makes me think the are getting fuel
today ill check the pressure
any other suggestions
thanks in advance
both injectors are getting power and both fuel lines are cold which makes me think the are getting fuel
today ill check the pressure
any other suggestions
thanks in advance
Last edited by Hdavis; Mar 22, 2025 at 11:30 AM. Reason: delete
Racer
Joined: Aug 2015
Posts: 382
Likes: 141
From: Pine Ridge FL
The fuel goes through the passenger side injector first so seeing the driver side firing is a good sign. The ECM fires the injector by supply a ground. So seeing power at the injector is only the first half of what you need.
I highly recommend getting a shop manual. There are some excellent trouble shooting diagrams you can use.
I highly recommend getting a shop manual. There are some excellent trouble shooting diagrams you can use.
Safety Car
Joined: Nov 2005
Posts: 3,532
Likes: 1,185
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
Why was the ECM replaced? Was it for an injector issue? If not, you may have another bad ECM with the injector drivers. The ECM fires the injectors via a Injector reference pulse from the distributor. Do you have a GM service manual? If not....GET ONE!
