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Just Finished ls2 403 ci stroker Code P0106?

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Old Dec 4, 2011 | 08:03 PM
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Default Just Finished ls2 403 ci stroker Code P0106?

i get this code every few days but it shuts off by itself after a day but keep coming back. i bought a new map sensor but it still comes on every once in awhile then goes away by itself any ideas?
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Old Dec 4, 2011 | 08:09 PM
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Do you have a tune? It's common if you don't have the car tuned and change cam or in your case engine. When you tune it the code will go away and stay away.
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Old Dec 4, 2011 | 08:10 PM
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How much vacuum are you pulling?

The following could be symptomatic of a P0106:

Engine runs rough
Black smoke at tailpipe
Engine will not idle
Poor fuel economy
Engine misses at speed
CausesA P0106 could be caused by:

*Bad MAP sensor
*Water/dirt intrusion affecting MAP sensor connector
*Intermittent open in the reference, ground, or signal wire for the MAP sensor
*Intermittent short in the reference, ground, or signal wire for the MAP sensor
*Ground problem due to corrosion causing intermittent signal problem
*A break in the flexible air intake duct between the MAF and the intake manifold
*Bad PCM (do not assume the PCM is bad until you've exhausted all other possibilities)

Possible SolutionsUsing a scan tool, watch the MAP sensor value with the key on, engine off. Compare the BARO reading with the MAP reading. They should be roughly equal. The voltage for the MAP sensor should read approx. 4.5 volts. Now start the engine and look for a significant drop in the MAP sensor voltage indicating the MAP sensor is working.

If the MAP reading doesn't change perform the following:

With the Key on, engine off, disconnect the vacuum hose from the MAP sensor. Using a vacuum pump, pull 20 in. of vacuum on the MAP sensor. Does the voltage drop? It should. If it doesn't inspect the MAP sensor vacuum port and vacuum hose to manifold for a restriction of some kind. Repair or replace as necessary.

If there are no restrictions, and the value doesn't change with vacuum, then perform the following: with the Key on and engine off and the MAP sensor unplugged, check for 5 Volts at the reference wire to the MAP sensor connector with a Digital Voltmeter. If there is none, check for reference voltage at the PCM connector. If the reference voltage is present at the PCM connector but not the MAP connector, check for open or short in the reference wire between MAP and PCM and retest.
If reference voltage is present, then check for existing ground at the MAP sensor connector. If it isn't present then repair open/short in the ground circuit.

If ground is present, then replace MAP sensor.

Other MAP sensor trouble codes include P0105, P0107, P0108 and P0109
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Old Dec 5, 2011 | 12:01 AM
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[QUOTE=Joe_G;1579385919]Do you have a tune? It's common if you don't have the car tuned and change cam or in your case engine. When you tune it the code will go away and stay away.[/QUOT

yes my friend tuned it with hp tuners and he said i had a bad map sensor so i bought a new one and he tried tuning it again and spent two hours on the car and he still could not tune it out! we tried setting the fail tables to 0% and 1600rpm @85 kpa like another forum member said but it did not help at all? My tuner said to check for vacuum leaks or a short now that's next on our list this weekend.
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Old Dec 5, 2011 | 12:11 AM
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Originally Posted by glenB
How much vacuum are you pulling?

The following could be symptomatic of a P0106:

Engine runs rough
Black smoke at tailpipe
Engine will not idle
Poor fuel economy
Engine misses at speed
CausesA P0106 could be caused by:

*Bad MAP sensor
*Water/dirt intrusion affecting MAP sensor connector
*Intermittent open in the reference, ground, or signal wire for the MAP sensor
*Intermittent short in the reference, ground, or signal wire for the MAP sensor
*Ground problem due to corrosion causing intermittent signal problem
*A break in the flexible air intake duct between the MAF and the intake manifold
*Bad PCM (do not assume the PCM is bad until you've exhausted all other possibilities)

Possible SolutionsUsing a scan tool, watch the MAP sensor value with the key on, engine off. Compare the BARO reading with the MAP reading. They should be roughly equal. The voltage for the MAP sensor should read approx. 4.5 volts. Now start the engine and look for a significant drop in the MAP sensor voltage indicating the MAP sensor is working.

If the MAP reading doesn't change perform the following:

With the Key on, engine off, disconnect the vacuum hose from the MAP sensor. Using a vacuum pump, pull 20 in. of vacuum on the MAP sensor. Does the voltage drop? It should. If it doesn't inspect the MAP sensor vacuum port and vacuum hose to manifold for a restriction of some kind. Repair or replace as necessary.

If there are no restrictions, and the value doesn't change with vacuum, then perform the following: with the Key on and engine off and the MAP sensor unplugged, check for 5 Volts at the reference wire to the MAP sensor connector with a Digital Voltmeter. If there is none, check for reference voltage at the PCM connector. If the reference voltage is present at the PCM connector but not the MAP connector, check for open or short in the reference wire between MAP and PCM and retest.
If reference voltage is present, then check for existing ground at the MAP sensor connector. If it isn't present then repair open/short in the ground circuit.

If ground is present, then replace MAP sensor.

Other MAP sensor trouble codes include P0105, P0107, P0108 and P0109
I believe it was around 60lbs or inches or however it is measured but it my tuner told me it was making good vacuum! I am also getting a service charging system soon now and have I put a brand new battery,alt with install and had them tested at checkers to make sure they were working and they were! my negative battery cable is loose and i plan on putting a new main post on because the stock one doesn't want to tighten down and hold all the way. could that be causing the that p0106 code as well? i have also been watching the volts on the dic and they do drop from 14.5 to as low as 12.1 form time when the car is driving but not at idle?
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Old Dec 5, 2011 | 02:24 AM
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Originally Posted by Mattraffai
I believe it was around 60lbs or inches or however it is measured but it my tuner told me it was making good vacuum! I am also getting a service charging system soon now and have I put a brand new battery,alt with install and had them tested at checkers to make sure they were working and they were! my negative battery cable is loose and i plan on putting a new main post on because the stock one doesn't want to tighten down and hold all the way. could that be causing the that p0106 code as well? i have also been watching the volts on the dic and they do drop from 14.5 to as low as 12.1 form time when the car is driving but not at idle?
Why? are you asking us? you seem to think your buddy is the expert, How come he can't figure it out? IMHO take it to a dyno tune with someone who has done alot of vette's, it ain't a GTO
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Old Dec 5, 2011 | 05:53 AM
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Originally Posted by Mattraffai
I believe it was around 60lbs or inches or however it is measured but it my tuner told me it was making good vacuum! I am also getting a service charging system soon now and have I put a brand new battery,alt with install and had them tested at checkers to make sure they were working and they were! my negative battery cable is loose and i plan on putting a new main post on because the stock one doesn't want to tighten down and hold all the way. could that be causing the that p0106 code as well? i have also been watching the volts on the dic and they do drop from 14.5 to as low as 12.1 form time when the car is driving but not at idle?
Yes the voltage problem needs to be fixed first. That causes havoc with many things. Make sure your main power wire from the battery to the starter solenoid is tight and that the wire hasn't burned against the headers.
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Old Dec 5, 2011 | 11:29 AM
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Your problem is in the tune.
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Old Dec 5, 2011 | 06:18 PM
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Originally Posted by CMY SIX
Why? are you asking us? you seem to think your buddy is the expert, How come he can't figure it out? IMHO take it to a dyno tune with someone who has done alot of vette's, it ain't a GTO
No i actually think my tuner is a retard and wish Tucson had a good tuner or i would switched to a new tuner asap! I believe i am wasting my time and money with my old tuner and that's why I am never going to use him again and came on here and posted because it seems like i know more about my car than he does even though he claimed to have a 1,000 hp c5 twin turbo vette and learned his tuning through that car and many other f-bodies. My mechanic which is a good friend of mine asked me to do the research and he would fix the issues for free so that's why i came on here. Sorry if i sounded like my old tuner knew everything because i know he doesn't, thats why my car still has missfires,stalls from Nuetral to drive and has throttle response issues! Thaks for the help I do very much appreciate it!
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Old Dec 5, 2011 | 06:26 PM
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Hit up user Hoxxoh for his thoughts on a local tuner. He's in Phoenix but may have some recommendations for you. He's well researched and a smart guy.
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