No injector pulse... need help!
Thread Starter
10 Second Club
Joined: Jan 2010
Posts: 2,317
Likes: 20
From: Hurley, VA
No injector pulse... need help! A friend of mine has a 98 Camaro 3.8 car. They bought it not running. Someone had started changing intake gaskets. Well in the midst of all that my friend went ahead and pulled the motor and changed head gaskets, oil pan gasket, everything. Now that the cars back together hes not getting injector pulse. He sparyed starting fluid in it and it will hit a few times but never start. Hes got fuel pressure and spark just no pulse. The security light comes on for about 3 seconds when you turn the key on but goes out like normal. Got any ideas why hes not getting any pulse? Thanks
Check the INJ1 fuse under the hood, its a 15amp fuse. That supplies the injectors with B+ and the PCM fires them off the ground side. I would start there.
Go ahead and check the crankshaft sensor also. I had a momentary lapse of mental stability.
Go ahead and check the crankshaft sensor also. I had a momentary lapse of mental stability.
Last edited by LilJayV10; Feb 3, 2013 at 04:19 PM.
TECH Enthusiast
Joined: Sep 2005
Posts: 503
Likes: 54
From: TX
Have you verified 12volts at the injectors? Do you have access to a scanner?
Check for codes and that both the 3x and 18x sensors on the crankshaft are working.
There's actually two cranks sensors in one.
Check for codes and that both the 3x and 18x sensors on the crankshaft are working.
There's actually two cranks sensors in one.
