Pumping brake increase fuel trim?
09-22-2016, 08:27 PM
#1
Pumping brake increase fuel trim?
I don't know if this is common knowledge but I noticed this today at a red light. Owned the car for 7.5 years and never noticed this. It only concerns me if its a symptom to a bad solenoid or something, anyone know? Lol.
09-22-2016, 08:35 PM
#2
Normal to an extent. When you push the brake pedal, air moves from the booster into the intake manifold. So it can affect the fuel trims a little bit. I haven't looked to see if that amount is normal for every LNF but some variation is to be expected.
Thread
Thread Starter
Forum
Replies
Last Post
boostbalt
General Cobalt
21
09-29-2016 11:46 AM
OrangeK
Problems/Service/Maintenance
3
09-19-2016 08:39 AM
AngelTiger82
08-10 SS Turbocharged General Discussion
18
09-16-2016 07:02 PM