start problem add idle
Thread Starter
Teching In
Joined: Jul 2022
Posts: 14
Likes: 2
start problem add idle Hello , a bit new here , hope can tell the problem .
have flash the ecm and remove some egr stuff , when I start the engine , sometimes it runs rough and must keep it running with the gaspedal , the other time it starts and runs smooth at idle , the othertime it starts and goes high rpm for some seconds , what can it be , have no mis-fire¨s on the screen in hp-tuners , injectors goes a bit up and down but stay around 3.7msec when it runs smoooth ,also some black smoke sometimes , the oxygen sensors are at idle around 0,914 V , looks for me a bit high , but I am not an expert
can send hp tuners run-log if you need
thanks Maus
have flash the ecm and remove some egr stuff , when I start the engine , sometimes it runs rough and must keep it running with the gaspedal , the other time it starts and runs smooth at idle , the othertime it starts and goes high rpm for some seconds , what can it be , have no mis-fire¨s on the screen in hp-tuners , injectors goes a bit up and down but stay around 3.7msec when it runs smoooth ,also some black smoke sometimes , the oxygen sensors are at idle around 0,914 V , looks for me a bit high , but I am not an expert
can send hp tuners run-log if you need
thanks Maus
TECH Fanatic
Joined: Oct 2022
Posts: 1,804
Likes: 641
From: Louisiana
You won't get much of an answer if you don't provide more information, what kind of vehicle? Motor and transmission? Stock vehicle? Modified vehicle? I'm no expert but these guys will need to know these things and also you mention hp tuners so does that mean you have been making changes in the tune?
