What would a bad MAP sensor do??
Car would run rich (as if at WOT) because it usually fails to the high kpa. If you have logging software, you can at least look at it and see if it is reading properly - with the engine not running, but the key ahead, it should read atmospheric for your elevation (102 kpa here, but varies by where you live). Does it run at all? Any codes in? You could probably get more help with some more info...
Motor is 2002 LS1 with MS3, No CATS and 1 set of O2 sensors..(69 Camaro)
It has the common P0106 code.
It does run rich(blue smoke) and doesnt idle very well. In the higher RPM it runs well..
What is kpa?
Will a regular scan tool give me that info?
Thanks
It has the common P0106 code.
It does run rich(blue smoke) and doesnt idle very well. In the higher RPM it runs well..
What is kpa?
Will a regular scan tool give me that info?
Thanks
Do you think your MAP sensor is bad because you are getting a P0106 code after the cam? Why would you think that the pass/fail MAP paramaters that GM established for that diagnostic on a stock cammed vehicle would be the same with a large cam like a MS3? You need to adjust the parameters in the calibration.
I dont know that is why I am asking..
So what do you think I should do??
When I had the car tuned I thought that would have been done if it need to be so I figured it might be a bad MAP sensor..
So what do you think I should do??
When I had the car tuned I thought that would have been done if it need to be so I figured it might be a bad MAP sensor..
In my experience, any cam larger than a 224/224 will need the P0106 paramaters raised to keep from setting that code. Go back to whoever tuned the car and have him change it. Seems a lot of tuners don't do that because it comes up a lot.
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Verdad Gallardo It's just a sanity check between tps positions and expected MAP readings at those TPS positions. I would hope Texas Speed would know how to set them for a large cam. Should just get rid of the code.
Without seeing the tune that is in it and a data log, would just be a guess, but setting the P0106 code itself is not causing it to run bad. And how are you determining it is running rich and when? Idle, part throttle, WOT? It's almost impossible to diagnose these without some kind of scanner/data logger.
+1
I too am getting the P0106 code, and didn't realize I had to adjust the tune for the code. I found a sample MS4 tune on hptuner.com - I'm going to give those #'s a try on my tune and see if it cures my code. Thx for the info 2xLS1.
-Eagle
I too am getting the P0106 code, and didn't realize I had to adjust the tune for the code. I found a sample MS4 tune on hptuner.com - I'm going to give those #'s a try on my tune and see if it cures my code. Thx for the info 2xLS1.
-Eagle
Just an update...
My tuner said to try a new MAP sensor first.. I put a new GM map sensor in it and it is doing the same thing..
Guess I will have to bring it back to him to have the MAP parameters changed..
My tuner said to try a new MAP sensor first.. I put a new GM map sensor in it and it is doing the same thing..
Guess I will have to bring it back to him to have the MAP parameters changed..
Staging Lane
Joined: Jul 2006
Posts: 67
Likes: 0
From: indianapolis
ttt... wanted to bump this instead of start new thread but what would a bad map sensor do on a stock cammed full bolt on car. I am throwing p0108 code and havent found any vacuum leaks so would like to know about map sensor before I replace it.
P0108 is different than was talked about here.
P0108
CONDITIONS FOR RUNNING THE DTC
The engine is running.
DTCs P0121, P0122, and P0123 are not set.
The throttle angle is 0 percent when the engine speed is less than 1,200 RPM.
The throttle angle is less than 20 percent when the engine speed is more than 1,200 RPM.
CONDITIONS FOR SETTING THE DTC
The MAP sensor voltage is more than 4.9 volts for more than 4 seconds .
P0108
CONDITIONS FOR RUNNING THE DTC
The engine is running.
DTCs P0121, P0122, and P0123 are not set.
The throttle angle is 0 percent when the engine speed is less than 1,200 RPM.
The throttle angle is less than 20 percent when the engine speed is more than 1,200 RPM.
CONDITIONS FOR SETTING THE DTC
The MAP sensor voltage is more than 4.9 volts for more than 4 seconds .
