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error codes
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PostPosted: Thu Jul 19, 2012 6:39 pm    Post subject:  error codes Reply with quote

went to autozone today , after the reset from last week. im now getting different codes then from last time.

P0107
P0122
P0102

now i been getting really s**t mileage lately .11mpg to be exact, i changed out my cat cause it was bad and i had a exhaust leak. got that taken care of, but i did have to change my 02 sensor. i thought after the reset that it would pick up the new cat and it hasnt. its still guzzling gas so i guess the 02 was bad bank 1 .
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outonthetiles
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PostPosted: Thu Jul 19, 2012 6:45 pm    Post subject:   Reply with quote

P0107 - Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

P0122 - Throttle Position Sensor/Switch A Circuit Low Input

P0102 - Mass Air Flow (MAF) Circuit Low Input



I'd check the connections on these, could be as simple as wiring. Otherwise, sounds like you need some new sensors.

Any one of these alone could cause bad gas mileage. All of them together will cause VERY bad gas mileage.

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PostPosted: Thu Jul 19, 2012 7:02 pm    Post subject:   Reply with quote

what could cause the 1st 2 codes to happen. i just changed the thermostat this week . do i need to re arrange some wires ? could all this cause 11mpg . why isnt the 02 sensor code coming back . thats quite strange
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outonthetiles
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PostPosted: Thu Jul 19, 2012 7:31 pm    Post subject:   Reply with quote

Maybe you unplugged the connectors somehow?

They're either not connected, the wiring is bad, or the sensors are bad.

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PostPosted: Thu Jul 19, 2012 7:35 pm    Post subject:   Reply with quote

yea i did if i had to move it to get to the thermostat. i plugged it back in tho ill go check. could i clean the sensors.
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PostPosted: Thu Jul 19, 2012 7:37 pm    Post subject:   Reply with quote

Not much to clean on the MAP and TPS, however you could clean your MAF sensor. Make sure you use MAF specific cleaner.

You could try to sand any corrosion off of the terminals on the connectors, and apply some dialectric grease to prevent further corrosion.

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PostPosted: Thu Jul 19, 2012 7:41 pm    Post subject:   Reply with quote

ill definitly will try that. do i have to buy something to test the voltage ?
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PostPosted: Thu Jul 19, 2012 8:24 pm    Post subject:   Reply with quote

How rough were you with the sensor bundle when you removed them to get to the thermostat? My guess if you pinched a wire in the harness. The odds of those three sensors failing independently at the same time is miniscule.

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PostPosted: Thu Jul 19, 2012 8:29 pm    Post subject:   Reply with quote

wasnt rough at all, hmmmm i didnt think all this could affect gas mileage like that. well so far i figured out i need a few more things

clean maf sensor
tps or check it and see if its good.
tune up
02 sensor.
temp sensor even tho i just replaced the thermostat. the car runs cooler i just need to figure out how to change it out.
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PostPosted: Thu Jul 19, 2012 8:36 pm    Post subject:   Reply with quote

Heck yes it can effect your gas mileage! Those sensor's entire purpose is to help the PCM calculate how much fuel your engine needs at any given time.

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PostPosted: Thu Jul 19, 2012 8:52 pm    Post subject:   Reply with quote

crc mass air flow sensor is on sale ill get some of that. take the air intake assembly apart and inspect it. now how can i check the tps to see if i need to replace it. what and how can i check the P0107 code ? it seems like its the same as the P0102 code
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PostPosted: Thu Jul 19, 2012 9:08 pm    Post subject:   Reply with quote

Did you replace the replace the sensors w/ ACDelco?
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PostPosted: Thu Jul 19, 2012 9:14 pm    Post subject:   Reply with quote

no sensors replaced yet, i will be using ac delco for the 02 sensor . so ac delco has a tps sensor . i dont think i need a new MAF it looks to be in ok condition. i can say it needs to be cleaned.
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PostPosted: Fri Jul 20, 2012 9:02 am    Post subject:   Reply with quote

I wouldn't start replacing sensors until you find out its not in the wiring. Do you have a friend close by or a member close by that would be willing to swap out sensors with you for diagnosis purposes?

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PostPosted: Fri Jul 20, 2012 11:04 am    Post subject:   Reply with quote

no i dont , i already have the sensor. i got one screw off but this last one is hell. i dont want to damage the head of it . i gotta figure something out , cleaned maf as well . its out drying and i was thinking it would be easy.
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