Notices
Build Threads Building a motor? Post the progress here.

Rebuild all the salvage Miatas! ASS!

Thread Tools
 
Search this Thread
 
Old Oct 2, 2015 | 10:48 AM
  #2381  
curly's Avatar
Cpt. Slow
iTrader: (25)
 
Joined: Oct 2005
Posts: 15,197
Total Cats: 1,398
From: Oregon City, OR
Default

You know I don't think I ever turned ego control back on after the dyno.
Old Oct 2, 2015 | 10:57 AM
  #2382  
gesso's Avatar
Senior Member
iTrader: (1)
 
Joined: Mar 2010
Posts: 820
Total Cats: 276
From: Bay Area, CA
Default

I wont be at the track until tomorrow, but you can swing by my house today and pick up the mirror today if you want.
Old Oct 2, 2015 | 10:58 AM
  #2383  
aidandj's Avatar
SADFab Destructive Testing Engineer
iTrader: (5)
 
Joined: Apr 2014
Posts: 18,643
Total Cats: 1,870
From: Beaverton, USA
Default

I want to stop by gesso's garage.
Old Oct 2, 2015 | 11:03 AM
  #2384  
gesso's Avatar
Senior Member
iTrader: (1)
 
Joined: Mar 2010
Posts: 820
Total Cats: 276
From: Bay Area, CA
Default

Originally Posted by aidandj
I want to stop by gesso's garage.
You might be disappointed, its an even bigger mess than usual at the moment. And there's fiberglass bits everywhere :(
Old Oct 3, 2015 | 12:14 AM
  #2385  
turbofan's Avatar
Thread Starter
Supporting Vendor
iTrader: (1)
 
Joined: Sep 2010
Posts: 8,146
Total Cats: 1,087
From: Lake Forest, CA
Default

Megasquirt wizards, I needz halp.

Car loses sync at 6600-6750 rpm (happens somewhere in that range). It then absolutely will not fire again until it returns to 0 rpm, at which point it fires right back up and runs like there's nothing wrong. As long as I don't hit that high of rpm there's no problem.

Ideas?
Old Oct 3, 2015 | 12:25 AM
  #2386  
EO2K's Avatar
Elite Member
iTrader: (37)
 
Joined: Apr 2010
Posts: 10,477
Total Cats: 1,924
From: Very NorCal
Default

Sensors getting hot and flaky? Do you have spares you can swap, or can you borrow one from one of the other eleventy billion miatas over there to test with? I have extra crank and cam sensors I can bring by if you want to give them a shot.
Old Oct 3, 2015 | 12:26 AM
  #2387  
codrus's Avatar
Elite Member
 
Joined: Mar 2007
Posts: 5,298
Total Cats: 884
From: Santa Clara, CA
Default

Originally Posted by turbofan
Megasquirt wizards, I needz halp.

Car loses sync at 6600-6750 rpm (happens somewhere in that range). It then absolutely will not fire again until it returns to 0 rpm, at which point it fires right back up and runs like there's nothing wrong. As long as I don't hit that high of rpm there's no problem.

Ideas?
Shift at 6000?

Does it do it all the time, or only when hot?

G: If you have a spare NB cam sensor, could you bring it with you? I'm a little suspicious of the one in my car right now, but I couldn't find my spare sensor this morning and I ran out of time to try to get one this afternoon.

I do have a couple spare crank sensors in my parts box.

--Ian
Old Oct 3, 2015 | 12:30 AM
  #2388  
curly's Avatar
Cpt. Slow
iTrader: (25)
 
Joined: Oct 2005
Posts: 15,197
Total Cats: 1,398
From: Oregon City, OR
Default

Take a datalog
Old Oct 3, 2015 | 12:55 AM
  #2389  
turbofan's Avatar
Thread Starter
Supporting Vendor
iTrader: (1)
 
Joined: Sep 2010
Posts: 8,146
Total Cats: 1,087
From: Lake Forest, CA
Default



Cam sensor craps out. Uh, G, can I come over? Aidan wants you to come out here and bring beer and roast marshmallows, but I'm staying in Salinas anyway and can just come to you.
Old Oct 3, 2015 | 01:02 AM
  #2390  
EO2K's Avatar
Elite Member
iTrader: (37)
 
Joined: Apr 2010
Posts: 10,477
Total Cats: 1,924
From: Very NorCal
Default

They let him have fire? O.o Not sure I need that much sugar this late

Ian, I'll bring all the sensors I have tomorrow.

Ed, I'll respond to your text right ...meow
Old Oct 3, 2015 | 02:45 AM
  #2391  
EO2K's Avatar
Elite Member
iTrader: (37)
 
Joined: Apr 2010
Posts: 10,477
Total Cats: 1,924
From: Very NorCal
Default

Not the sensor. Boooo.

Eds car is awesome though, makes me want to burn mine to the ground and start over.
Old Oct 3, 2015 | 02:50 AM
  #2392  
turbofan's Avatar
Thread Starter
Supporting Vendor
iTrader: (1)
 
Joined: Sep 2010
Posts: 8,146
Total Cats: 1,087
From: Lake Forest, CA
Default

Lol. RIIIIGHT. I bet you're super jealous of my startup squeal and, uh, smooth cluch engagement and stuff.

Thanks for coming out. Was hoping that that was the solution, but glad we could at least eliminate that. Will probably play with megasquirt pots tomorrow but for now... Turn down the rev limit.
Old Oct 4, 2015 | 12:39 AM
  #2393  
codrus's Avatar
Elite Member
 
Joined: Mar 2007
Posts: 5,298
Total Cats: 884
From: Santa Clara, CA
Default

My cam sensor behaved itself today, unlike on the dyno. It was significantly cooler, though.

--Ian
Old Oct 4, 2015 | 02:13 AM
  #2394  
turbokitten's Avatar
Newb
 
Joined: Sep 2014
Posts: 21
Total Cats: 5
Default

Originally Posted by turbofan
Megasquirt wizards, I needz halp.

Car loses sync at 6600-6750 rpm (happens somewhere in that range). It then absolutely will not fire again until it returns to 0 rpm, at which point it fires right back up and runs like there's nothing wrong. As long as I don't hit that high of rpm there's no problem.

Ideas?
What do you have in Noise Filtering under Ignition Settings? If the interrupt masking is too large it could drop out at high revs. Post a screen shot.

An oscilloscope on the cam pin will show you right away if the problem is in the sensor or the ECU. You can also use a decent digital multimeter with a frequency (Hz) mode to monitor the sensor, though it's not definitive.
Old Oct 4, 2015 | 05:20 PM
  #2395  
aidandj's Avatar
SADFab Destructive Testing Engineer
iTrader: (5)
 
Joined: Apr 2014
Posts: 18,643
Total Cats: 1,870
From: Beaverton, USA
Default

Eds crank pulley and belt are currently in the sand at the end of the corkscrew. Getting them at the end of this session.
Old Oct 4, 2015 | 05:34 PM
  #2396  
aidandj's Avatar
SADFab Destructive Testing Engineer
iTrader: (5)
 
Joined: Apr 2014
Posts: 18,643
Total Cats: 1,870
From: Beaverton, USA
Default

Attached Thumbnails Rebuild all the salvage Miatas! ASS!-vufvogr.jpg  
Old Oct 4, 2015 | 07:12 PM
  #2397  
Sirnixalot's Avatar
Junior Member
 
Joined: Aug 2005
Posts: 440
Total Cats: 17
From: Cayman Islands
Default

well.....there's your problem.

Hope you got to have some fun before they jumped ship!
Old Oct 4, 2015 | 07:37 PM
  #2398  
aidandj's Avatar
SADFab Destructive Testing Engineer
iTrader: (5)
 
Joined: Apr 2014
Posts: 18,643
Total Cats: 1,870
From: Beaverton, USA
Default

As far as I know he is out on the track still. Found another pulley in the pits and was swapping when we left.
Old Oct 4, 2015 | 07:38 PM
  #2399  
curly's Avatar
Cpt. Slow
iTrader: (25)
 
Joined: Oct 2005
Posts: 15,197
Total Cats: 1,398
From: Oregon City, OR
Default

You torqued the bolts to spec with loctite right?
Old Oct 4, 2015 | 07:39 PM
  #2400  
aidandj's Avatar
SADFab Destructive Testing Engineer
iTrader: (5)
 
Joined: Apr 2014
Posts: 18,643
Total Cats: 1,870
From: Beaverton, USA
Default



Attached Thumbnails Rebuild all the salvage Miatas! ASS!-cxu60i8.jpg   Rebuild all the salvage Miatas! ASS!-g1hzfg5.jpg  



All times are GMT -4. The time now is 07:06 AM.