ECUs and Tuning Discuss Engine Management, Tuning, & Programming
Sponsored by:
Sponsored by:

lc-1 loss of power while cranking

 
Old 05-19-2016, 11:49 PM
  #1  
Newb
Thread Starter
 
Join Date: Oct 2015
Location: Port Orchard Washington
Posts: 38
Total Cats: 2
Default lc-1 loss of power while cranking

please let me know if this is an issue. i just installed a FM II kit with a MSpmp2 im having issues getting the car to start and idle. when i can get the car started the only way to keep it running is with aggressive throttle use and runs super rich. As soon as i start cranking, the lc-1 gauge losses power and then displays heater. dose the lc-1 talk to the MS while in heating mode?
NicDrilling is offline  
Old 05-20-2016, 01:47 AM
  #2  
Slowest Progress Ever
iTrader: (26)
 
thirdgen's Avatar
 
Join Date: Oct 2007
Location: The coal ridden hills of Pennsylvania
Posts: 6,010
Total Cats: 282
Default

Lc1 is most likely wired to ignition on, similar to your stereo. Sounds like lc1 is acting like it should. Calibrate lc1 correctly/ make sure it's setup correctly on both the lc1 outputs and in TS. Once the car runs and the lc1 gets a true reading, modify fuel VE table in the idle cells until it idles near 14.7 (this should be your target table setting at the idle area).
thirdgen is offline  
Old 05-20-2016, 11:35 AM
  #3  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,141
Total Cats: 3,144
Default

this is why I hate innovate.
no it doesn't talk to your car while warming up. it's useless. you gotta wire it to another battery if you want to properly tune startup
18psi is offline  
Old 05-20-2016, 12:28 PM
  #4  
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 14,388
Total Cats: 1,328
Default

Originally Posted by 18psi View Post
this is why I hate innovate.
no it doesn't talk to your car while warming up. it's useless. you gotta wire it to another battery if you want to properly tune startup
The innovative not showing anything during warmup of the sensor is annoying, which is why I switched to the AEM. On the flip side when the sensor is warming up the value it gives you might not really be accurate or true. Personally having some sort of value during the warmup to me is more desirable then waiting, as I might have some clue what is going on.
shuiend is offline  
Old 05-20-2016, 12:45 PM
  #5  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,141
Total Cats: 3,144
Default

My biggest gripe is not with initial warmup even. I get that it can't really read accurately when cold. But when you're running your car, momentarily shut it off and re-start, it's burning hot, there is no reason to still do the stupid long warmup procedure.
18psi is offline  
Old 05-20-2016, 03:31 PM
  #6  
Slowest Progress Ever
iTrader: (26)
 
thirdgen's Avatar
 
Join Date: Oct 2007
Location: The coal ridden hills of Pennsylvania
Posts: 6,010
Total Cats: 282
Default

^ this, but yeah. During warmup, it probably reads max rich value...possibly tricking OP into thinking its running rich.
Let it start up, wait like 30 seconds until it reads proper, then adjust.
thirdgen is offline  
Old 05-20-2016, 03:47 PM
  #7  
Senior Member
iTrader: (8)
 
Join Date: Feb 2012
Location: East Bay, CA
Posts: 619
Total Cats: 53
Default

While this 'feature' of no WB power during cranking is annoying, I've never had it warming up cause anything negative for MS that would make warm up/ASE not work right.

A semi-workaround if you really want to see values during warm up:
  • Turn the ignition to ON but don't crank
  • Let the WB warm up and start to read values
  • Cycle off, then crank (or straight to crank from current ON position might be necessary, cant remember)
  • You should get WB readings in like 2 seconds vs the regular 15 seconds with a standard 'cold' start

But again, I haven't had problems due to the WB warming up post cranking so I'd check your ASE and WUE settings before pointing at the WB.
petrolmed is offline  
Old 05-20-2016, 03:51 PM
  #8  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,141
Total Cats: 3,144
Default

nope, it will still take it's sweet time and not 2 seconds.

for 95% of the tuning you really don't need this. when dialing in startup on big injectors running sequential or e85, that's when this becomes important
18psi is offline  
Old 05-20-2016, 03:55 PM
  #9  
Newb
Thread Starter
 
Join Date: Oct 2015
Location: Port Orchard Washington
Posts: 38
Total Cats: 2
Default

The Guage is not showing anything but "HTR". I say it's running rich because it's puking fuel rich exhaust and fouling plugs. And after the motor dies and the lc-1 finally wants to display a reading it's in the mid 10s and if I leave the ignition on and the motor off, the afrs will gradually return to 22 I have the req fuel set for 700cc injectors .
NicDrilling is offline  
Old 05-20-2016, 03:57 PM
  #10  
Newb
Thread Starter
 
Join Date: Oct 2015
Location: Port Orchard Washington
Posts: 38
Total Cats: 2
Default

Also keep in mind I have the megasquirt experience level of an infant.
NicDrilling is offline  
Old 05-20-2016, 04:10 PM
  #11  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,141
Total Cats: 3,144
Default

So connect it to a separate battery and start tuning start-up, ase, we, etc.

Keep in mind for tuning cold-starts, you get 1 try per day basically
18psi is offline  
Old 05-20-2016, 04:15 PM
  #12  
Senior Member
iTrader: (8)
 
Join Date: Feb 2012
Location: East Bay, CA
Posts: 619
Total Cats: 53
Default

Originally Posted by 18psi View Post
nope, it will still take it's sweet time and not 2 seconds.
Well, I've done the above process on multiple occasions. I certainly don't fully understand its quirks, so explain it however you wish. Obviously its not an ideal way to get readings, but it is possible.
petrolmed is offline  
Old 05-20-2016, 04:21 PM
  #13  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,141
Total Cats: 3,144
Default

Maybe some of the units are faster than the others, but the last MTX-L took a full 6-10 seconds for it to finally start displaying. My friend's LC-1 was the same.

Once you dialed in startup/ase, it really doesn't matter and you can set EGO correction to the same delay post start as the wideband takes, so the car will run open loop and not overcorrect
18psi is offline  
Old 05-21-2016, 08:45 AM
  #14  
Junior Member
iTrader: (1)
 
Join Date: Aug 2014
Location: Wisconsin
Posts: 76
Total Cats: 12
Default

Originally Posted by 18psi View Post
nope, it will still take it's sweet time and not 2 seconds.

for 95% of the tuning you really don't need this. when dialing in startup on big injectors running sequential or e85, that's when this becomes important
Manual for AEM UEGO 30-4110 says warm-up time will be <20 seconds. Don't know if the LC1 manual has anything to say?
4strings is offline  
Old 05-21-2016, 10:09 AM
  #15  
Junior Member
 
Join Date: Mar 2010
Location: Melissa, TX
Posts: 172
Total Cats: 20
Default

There are separate grounds on the LC1 for the heater and the sensor. Do you have them both grounded?
Ziggo is offline  
Old 05-21-2016, 10:11 AM
  #16  
Newb
Thread Starter
 
Join Date: Oct 2015
Location: Port Orchard Washington
Posts: 38
Total Cats: 2
Default

If there is a second grounding wire, it's not obvious.
NicDrilling is offline  
Old 05-22-2016, 02:40 PM
  #17  
Junior Member
 
Join Date: Mar 2010
Location: Melissa, TX
Posts: 172
Total Cats: 20
Default

On the LC-1 both the blue and white wires are ground. Are you sure its an LC-1 and not an LC-2?

Attached Thumbnails lc-1 loss of power while cranking-80-lc_1_wiring_a_c6ef579aecc11f8742dcc31e70d92461cb8abb95.jpg  
Ziggo is offline  
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
bawward
General Miata Chat
13
06-13-2016 01:25 PM
ApexAddict
Media
6
04-30-2016 04:36 PM
acedeuce802
MEGAsquirt
8
04-26-2016 06:40 PM
vincentrx7
MEGAsquirt
4
04-22-2016 01:49 PM


Thread Tools
Search this Thread
Quick Reply: lc-1 loss of power while cranking


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.