lc-1 probs

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Jul 2, 2005 | 01:18 PM

bmfcamaro

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lc-1 probs

i was tuning my car and everything was going good my afr was great and then all of the sudden my afr is going crazy. they were all around 13 which is what i commanded now my afr will not stay still on the histogram. it bounces from 11-14 afr. it was working perfect and now i cant get a good reading. could my sensor be bad already or what? how do i tell?

Jul 3, 2005 | 10:38 AM

bmfcamaro

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Quote:

Originally Posted by bmfcamaro

update: now i am getting either 7 or 21 afr constantly.

Jul 4, 2005 | 12:07 AM

JoeyGC5

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From: St Joe, MO

Measure the output voltage of the module. If its at 7 you've got 0volts, and if at 20 you've got 5 volts. Either could be given by a bad ground or power to the LM-1 module

Jul 4, 2005 | 03:26 AM

bmfcamaro

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nothing was changed in between runs. the voltage matches the afr, but it only gives two numbers 7 and 21.
0 and 4.88 volts

Jul 4, 2005 | 02:10 PM

JoeyGC5

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From: St Joe, MO

Quote:

Originally Posted by bmfcamaro

nothing was changed in between runs. the voltage matches the afr, but it only gives two numbers 7 and 21.
0 and 4.88 volts

Contact the guys over at HP Tuners, could be a module problem?

Jul 4, 2005 | 03:37 PM

bmfcamaro

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i have been working with ken with my tuning. i am waiting for him to get back to me. i think it might be the lc-1 itself. my hptuners works fine.

Jul 5, 2005 | 07:51 AM

JoeyGC5

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From: St Joe, MO

Quote:

Originally Posted by bmfcamaro

nothing was changed in between runs. the voltage matches the afr, but it only gives two numbers 7 and 21.
0 and 4.88 volts

Sorry mis-understood the quote. If it's only giving 5 volts and zero volts and siplaying as such, then it's the LC-1. How many times have you calibrated the LC-1? Calibrated in free air, or just in the exhaust pipes?