done right you can read the commutater fields on a turning starter and get a very clear idea of its condition. it will tell you whether, any of the windings are developing high resistance(before it becomes an open) condition of armature/brushes/bearings. i'm told its actually a 15 minute or less to test, most of that being hooking up the Oscope
You have a very nasty CPS signal. What color sensor is that? Mine is always crisp and flat.
Btw, are you showing cylinder #4 toward the right past what looks to be the wider CPS pulse?
If so.... why aren't you looking at cylinder #1, or more to the point.... why does your scope not automatically trigger itself to #1, considering that it's the longest gap in the sequence?
Or did you pull the injector high side from the driver's side instead of passengers?
On Edit:
Nevermind about the signal noise, I found a picture I had taken a while back on my truck and it's about the same deal. Don't know why I thought it was cleaner. Must have been thinking about CID. You can tell how long ago this picture was taken, just look at that pw, lol.
You have a very nasty CPS signal. What color sensor is that? Mine is always crisp and flat.
Btw, are you showing cylinder #4 toward the right past what looks to be the wider CPS pulse?
If so.... why aren't you looking at cylinder #1, or more to the point.... why does your scope not automatically trigger itself to #1, considering that it's the longest gap in the sequence?
Or did you pull the injector high side from the driver's side instead of passengers?
I was looking at that too, only I was trying to use MS Paint to put little circles and arrows and a paragraph on the back of each one to explain what it was to be used as evi... nevermind..
Anyways, I got pi$$ed off and that became a case of the f*ck its...
But the point is..
two people caught the same thing by looking at a lab scope...
something that a DVOM or a scanner never would have caught...
Scopes are handy as hell. We use a couple at work, I have one in the shop at home, I've used Nate's at Unlimited when we were playing around with his truck to see if the real world was matching the scanner, etc... very handy tool.
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