MEGAsquirt A place to collectively sort out this megasquirt gizmo

weird hiccup at 5000-6000rpm

Thread Tools
 
Search this Thread
 
Old 09-16-2010, 10:14 AM
  #61  
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 15,177
Total Cats: 1,681
Default

Originally Posted by hustler
Wirelessly posted

I replaced all 4 of them last night, again. I have a box of 16-Toyota coils, lol.
So you still get the same problems after replacing all 4 cops?
shuiend is offline  
Old 09-16-2010, 10:18 AM
  #62  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

Wirelessly posted

Same problem. I'm searching for an igniter.
hustler is offline  
Old 09-16-2010, 10:23 AM
  #63  
Elite Member
 
Laur3ns's Avatar
 
Join Date: Mar 2008
Location: Enschede, NL
Posts: 2,053
Total Cats: 12
Default

Originally Posted by hustler
Wirelessly posted

Same problem. I'm searching for an igniter.
And out of boost?
Lower boost?
Laur3ns is offline  
Old 09-16-2010, 10:59 AM
  #64  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

Wirelessly posted

The spark drops every time in load. However if I back off throttle minimally in boost, spark drops (Maintenence throttle mid corner). This is a recent problem, it once worked properly, even at 16psi rather than the current 11psi.

I can hold 100kpa to redline with no drop.

Last edited by hustler; 09-16-2010 at 11:01 AM.
hustler is offline  
Old 09-16-2010, 11:06 AM
  #65  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

Wirelessly posted

Right now I'm leaning toward a late-night rewire.
hustler is offline  
Old 09-16-2010, 11:06 AM
  #66  
Junior Member
 
JustinHoMi's Avatar
 
Join Date: Jul 2005
Location: Hillsborough, NC
Posts: 273
Total Cats: 1
Default

Have you had the cap mod done yet? It'd be worth doing.... Send it to DIY. Or I'll do it for you if they charge a fee. I doubt they do.
JustinHoMi is offline  
Old 09-16-2010, 11:12 AM
  #67  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

Wirelessly posted

Ok, I\'m going to try the cap mod I guess, nothing like learning to solder a $700 PCB the night before a road trip. I\'m prepared to track my daily.

Last edited by hustler; 09-16-2010 at 11:23 AM.
hustler is offline  
Old 09-16-2010, 11:35 AM
  #68  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

Wirelessly posted

What kind of wire to attach the cap to the board? What are my chances of abject failure?
hustler is offline  
Old 09-16-2010, 11:39 AM
  #69  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,499
Total Cats: 4,080
Default

you can probably just use the leads off the cap...then bend 90° them so the cap itself rests on the board.
Braineack is offline  
Old 09-16-2010, 11:42 AM
  #70  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

Wirelessly posted

Originally Posted by Braineack
you can probably just use the leads off the cap...then bend 90° them so the cap itself rests on the board.
Why would this problem develop after functioning properlyfor almost 2-years? I wonder if somethig else is wrong.

Does Radioshack sell these? How do I know poalrity? When I solder, do I heat the lead or board? Youtube's "how to solder" vies don't address that.

Thanks guys, my car wouldn't run without you.
hustler is offline  
Old 09-16-2010, 11:47 AM
  #71  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,499
Total Cats: 4,080
Default

Honestly, I dunno, not quite sure what's going on.

radioshack should sell a 3,700uF cap, again, I'm unsure what size DIY uses within the units now. The leg with the longer lead goes to 12v, the short leg goes to ground.

When I solder, I like to heat up the lead I'm going to attach first, then "tin" it with some solder. Then, I heat up the area it's going to attach to, put it in place and let the solder from each merge.

I still use a $7 radio shack soldering iron for all my units. I bought a nice weller once for $0, but it died in 2 weeks.
Braineack is offline  
Old 09-16-2010, 03:27 PM
  #72  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

When I go to Radioshack, what part do I ask for? "0.1'you' 'eff' capacitor"?
hustler is offline  
Old 09-16-2010, 04:17 PM
  #73  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,499
Total Cats: 4,080
Default

email ben @ diyautotune.com and ask him.


if you wanna put it on the cop harness, you'd want to to buy two of the 4,700uF capacitors.

http://www.radioshack.com/product/in...tic+capacitors

Now, IIRC, the arrow points to ground. seriously google it, i cant remember.
Braineack is offline  
Old 09-16-2010, 04:26 PM
  #74  
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 14,201
Total Cats: 1,138
Default

Go to the drawers of parts that are usually somewhere in the back of the store, and find it yourself. It's hit and miss whether the employees know about those drawers, much less anything that's in them, or that it's how Radio Shack became as successful as it is today.
curly is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
satisfied
MEGAsquirt
144
11-05-2018 04:05 PM
nick470
MEGAsquirt
1
09-30-2015 10:32 PM
ndragun
MEGAsquirt
0
09-20-2015 10:28 PM
vehicular
General Miata Chat
12
09-14-2015 03:17 PM
speedf50
General Miata Chat
18
01-14-2008 02:16 PM



Quick Reply: weird hiccup at 5000-6000rpm



All times are GMT -4. The time now is 02:29 AM.