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Old 04-12-2010, 07:10 PM   #1
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Default LC-1 Intermitent? Please Help

OK so I installed my MSPNP and my LC-1 last week. Car runs better than I thought it would but the problem is my LC-1 has not been working right. I did the calibration a couple times and got it to work and display in Megatune. I took it for a short ride and everthing looked to be reading right. Now when I start the car it wont read more than 7:1 and the led for the LC-1 blinks 4 times. I did notice that if I turn the ignition on and let the led blink until it stay solid, then start the car everything seems good. This only works sometimes though.

Any thoughts would be a big help. I wish there was someone in the area that could help, but I dont think anyone is around here.
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Old 04-13-2010, 11:31 AM   #2
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You're getting error code 4, pump cell circuit open. This could be one of the following:

1. A bad sensor
2. A damaged sensor cable
3. The connector not completely seated at the LC-1
4. Bad sensor heater calibration

#4 is the easiest to check - try recalibrating the heater circuit, not just doing a free air calibration.
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Old 04-13-2010, 11:10 PM   #3
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I have done this. It will work for a bit. If i turn the key to on and wait for the led to go solid then start the car its fine. If i just start the car without the led going solid it show error code 4. Then i have to redo all the calibration to get it to work properly.
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Old 04-13-2010, 11:12 PM   #4
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I'm new at this and just want this thing working right before I try to auto tune the car.
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Old 04-14-2010, 02:45 PM   #5
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How are the LC-1's power and ground circuits connected?
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Old 04-14-2010, 10:36 PM   #6
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All grounds are grounded into one lug on the back of the block. Power is tapped off of the radio circuit.
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Old 04-15-2010, 10:52 AM   #7
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That may be your problem - it's losing power while cranking.
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Old 04-15-2010, 08:08 PM   #8
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Point me in the right direction.
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Old 04-15-2010, 08:15 PM   #9
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you need to power it from a source that is hot whenever the key is on. the radio power cuts out while cranking.
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Old 04-15-2010, 10:24 PM   #10
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Where can I get that. I read somewhere to take it off the ECU harness. Which pin and how? With a wire tap or cut and splice?
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Old 04-16-2010, 02:55 PM   #11
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Quote:
Originally Posted by therieldeal View Post
you need to power it from a source that is hot whenever the key is on. the radio power cuts out while cranking.
I contacted support and this is wrong. It needs to cut power while cranking because the voltage drop does not agree with the controller. Anyway they had me check a few things and said sounds like it is internal in the unit so I am sending it back.
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