Search found 35 matches

by Carl Grotti
Sun Oct 31, 2010 2:16 pm
Forum: Automotive kit hardware
Topic: Is there a way to display 5 or more COP (PRIMARY) ign W4chan
Replies: 2
Views: 3612

Re: Is there a way to display 5 or more COP (PRIMARY) ign W4

Yes there is. Use a low current probe to parade all of the coils on one channel and then use a second channel for your sync. On this second channel you can use primary voltage, IC signal, or even an additional low current probe. This depends on which system you are working on. On some vehicles, prim...
by Carl Grotti
Wed Oct 20, 2010 2:54 am
Forum: Automotive kit hardware
Topic: Voltage interference on WPS signal?
Replies: 5
Views: 5333

Re: Voltage interference on WPS signal?

I'm a bit confused too, Amech. Why do you think fuel pressure is wrong at where you indicated? If anything, what stands out is how the pressure goes negative. Also, it appears to me that the pump quit running about half way during the duration of your cranking. Whatever fuel system you have there is...
by Carl Grotti
Thu Jun 17, 2010 10:10 pm
Forum: Automotive kit hardware
Topic: Coolant Temperature Sensor
Replies: 3
Views: 3977

Re: Coolant Temperature Sensor

Just adding a little to what Peter said. You want to be careful to promote that there is only one pull up resistor in series with the ECT sensor. Some ECUs will actually switch over to another resistor at midstream temperature monitoring. You may see approximately 4.8V at -30*C and it will go down f...
by Carl Grotti
Tue Sep 15, 2009 7:09 am
Forum: Automotive kit hardware
Topic: location of camshaft positioning sensor on 2000 dodge neon
Replies: 5
Views: 11231

The single overhead camshaft is located in the cylinder head just below the rocker shafts. There should be a reference mark on the camshaft sprocket for alignment. If you are trying to check to see if the camshaft is in the proper position in relation to the crankshaft, then do what Tom suggested an...
by Carl Grotti
Tue Feb 17, 2009 6:22 pm
Forum: Automotive kit hardware
Topic: Bosch AFM testing
Replies: 5
Views: 8453

Hi Dave, I have to confess Carl that I don't understand the abbreviations that you used in your reply. Sorry about that. PGM = Power Graphing Meter GMM = Graphing Multi Meter Here is the one I use. http://buy1.snapon.com/products/diagnostics/Vantage.ASP?partno=EETM300f&dir=catalog There shouldn't be...
by Carl Grotti
Sat Dec 13, 2008 10:48 pm
Forum: Automotive kit hardware
Topic: Bosch AFM testing
Replies: 5
Views: 8453

Hello John, Testing "Air Flow Meters" or "Mass Air Flow" sensors can be tricky when they are frequency based instead of a proportional analog one. It can be done fairly easy enough though using PicoScope. You can do this a few different ways. Utilizing the advanced triggering is one way. Myself, if ...
by Carl Grotti
Sat Jan 12, 2008 11:42 am
Forum: Automotive kit hardware
Topic: Automotive current draw measurement and data logging
Replies: 7
Views: 13126

Thank you, Jim. There are a few things I'd like to add to your post. The PP264 current probe conductor clearance is quite capable of handling most battery terminations for parasitic load monitoring. An excess of 10mm is not that common. That current probe should work well with the vehicle Crisco has...
by Carl Grotti
Wed Jan 09, 2008 10:10 pm
Forum: Automotive kit hardware
Topic: Automotive current draw measurement and data logging
Replies: 7
Views: 13126

Hi John, It appears as though Crisco is investigating an elusive parasitc load. Personally, I've never seen a need to log something like this for long periods of time. All the modules on board should typically power down in 45 minutes or less. Maybe he has a node waking up and unable to catch it wit...
by Carl Grotti
Sat Jun 09, 2007 6:27 pm
Forum: Automotive kit hardware
Topic: PicoScope Superpowers
Replies: 2
Views: 7438

PicoScope Superpowers

Nice post, Tom. I would just like to add a few things here: The reason we were able to capture the slow analog Throttle Position Sensor (TPS) signal and the high frequency Throttle Actuated Control (TAC) digital commands and results with great detail was because the 3423 is in a fast streaming mode....
by Carl Grotti
Tue Aug 15, 2006 8:10 pm
Forum: Automotive kit hardware
Topic: National Tool Warehouse, Cleveland Ohio
Replies: 6
Views: 10548

Hi Michael, Sarah, and Alan, I've been assured that NTW doesn't sell PicoScope. They do have the OTC Genisys and Solarity which isn't even close to being in the same league. Thank you Michael for your moderation. I agree with Alan that this is the wrong forum to be posting about other manufacturer's...