camshaft/crankshaft trigger pattern
#1
New Member
Thread Starter
camshaft/crankshaft trigger pattern
I am trying to go with the AEM computer, but they do not have a system for the cobalt ss. I have a 2007 lsj. does anyone know what the cam/crank trigger pattern is?
#5
https://www.cobaltss.net/forums/members/tjolley-58494/
Under his name there is a button that says send message.
Under his name there is a button that says send message.
#14
Senior Member
Doesn't really help your situation but for future ref this is gm's description
Crankshaft Reluctor Wheel
The crankshaft reluctor wheel is part of the crankshaft. The reluctor wheel consists of 58 teeth and a reference gap. Each tooth on the reluctor wheel is spaced 6 degrees apart with a 12-degree space for the reference gap. The pulse from the reference gap is known as the sync pulse. The sync pulse is used to synchronize the coil firing sequence with the crankshaft position, while the other teeth provide cylinder location during a revolution.
Camshaft Position (CMP) Sensor
The camshaft position (CMP) sensor is triggered by a notched reluctor wheel driven by the camshaft. The CMP sensor provides four signal pulses every camshaft revolution. Each notch, or feature of the reluctor wheel is of a different size which is used to identify the compression stroke of each cylinder and to enable sequential fuel injection. The CMP sensor is connected to the PCM by the following circuits:
A 5-volt circuit
A low reference circuit
A signal circuit
Crankshaft Reluctor Wheel
The crankshaft reluctor wheel is part of the crankshaft. The reluctor wheel consists of 58 teeth and a reference gap. Each tooth on the reluctor wheel is spaced 6 degrees apart with a 12-degree space for the reference gap. The pulse from the reference gap is known as the sync pulse. The sync pulse is used to synchronize the coil firing sequence with the crankshaft position, while the other teeth provide cylinder location during a revolution.
Camshaft Position (CMP) Sensor
The camshaft position (CMP) sensor is triggered by a notched reluctor wheel driven by the camshaft. The CMP sensor provides four signal pulses every camshaft revolution. Each notch, or feature of the reluctor wheel is of a different size which is used to identify the compression stroke of each cylinder and to enable sequential fuel injection. The CMP sensor is connected to the PCM by the following circuits:
A 5-volt circuit
A low reference circuit
A signal circuit
#18
Senior Member
iTrader: (1)
They are currently using an external crank trigger wheel but last I talked to Trevor they are working on a cam trigger setup. That's been a while back so I don't know where they are at on it currently. I'm interested in the cam trigger setup as I would like to convert to standalone at some point too.
#19
New Member
Thread Starter
with AEM trying to figure out a system, read trevors and AEMs conversation on a AEM forum. AEM needs to have demand, 50-100 people need to be interested in it PER YEAR. so I doubt anything will happen. and I private messenged trevor and haven't gotten anything back
#21
New Member
Thread Starter
They are currently using an external crank trigger wheel but last I talked to Trevor they are working on a cam trigger setup. That's been a while back so I don't know where they are at on it currently. I'm interested in the cam trigger setup as I would like to convert to standalone at some point too.
#24
Senior Member
iTrader: (1)
im running an external 60-2 trigger on my l61 with a microtech ecm and it works just fine. it doesnt use a cam sensor, and runs in semi sequential mode. i honestly dont feel id be gaining much by going to a fully sequential system.
if your really wanting stand alone on an ecotec with full sequential injection, have a look at a megasquirt 3. it will do everything you can think of, aside from electronic throttle control.
if your really wanting stand alone on an ecotec with full sequential injection, have a look at a megasquirt 3. it will do everything you can think of, aside from electronic throttle control.