Mass Air Meter Problems
#1
Mass Air Meter Problems
I purchased a Pro M 95mm mass air meters for his 89 mustang a little less than two years ago. When we installed the meter, the car ran beautifully. After a few months suddenly it began to run terrible. It surges badly, won't idle from a cold start, and any time you give it a little throttle it dies. You basically can't drive the car. Long story made short. I scanned the computer for error codes and everything checked out ok except for one. We found a mass air meter error code. It was mass air meter below 0.4 volts during the last 80 warm ups. Also, He has a wide band 02 sensor with a meter. What we observed was during a cold start up the meter will read from 12:1 to 17:1 afr then after a second or two it'll go lean, off the meter lean like the engine's just not receiving any fuel. Try starting the car again and it repeats this act. When the engine starts to get a little heat in it, it will idle ok for a few seconds but as soon as you give it the slightest amount of throttle it starts acting up again. I am tending to believe that the problem is with the air meter.
Any idea on how to trouble shoot the meter to make sure it's the problem?
Any idea on how to trouble shoot the meter to make sure it's the problem?
#2
I purchased a Pro M 95mm mass air meters for his 89 mustang a little less than two years ago. When we installed the meter, the car ran beautifully. After a few months suddenly it began to run terrible. It surges badly, won't idle from a cold start, and any time you give it a little throttle it dies. You basically can't drive the car. Long story made short. I scanned the computer for error codes and everything checked out ok except for one. We found a mass air meter error code. It was mass air meter below 0.4 volts during the last 80 warm ups. Also, He has a wide band 02 sensor with a meter. What we observed was during a cold start up the meter will read from 12:1 to 17:1 afr then after a second or two it'll go lean, off the meter lean like the engine's just not receiving any fuel. Try starting the car again and it repeats this act. When the engine starts to get a little heat in it, it will idle ok for a few seconds but as soon as you give it the slightest amount of throttle it starts acting up again. I am tending to believe that the problem is with the air meter.
Any idea on how to trouble shoot the meter to make sure it's the problem?
Any idea on how to trouble shoot the meter to make sure it's the problem?
#4
Do you have a spare meter that is calibrated for your inj needs??? quickest thing you could do is swap on a known good meter, I have a bunch of friends around here that will let me borrow there's to check such often
#5
That was my next course of action, but I don't know of someone that has a spare meter that's calibrated to my injectors.
#6
craigslist is your friend. bet you can find someone local that will come over and let you swap out for testing for a quick $20
#8
yeah i agree, it could be your throttle position sensor that caused your air mass meter not to function well. if you want to troubleshoot it here's how http://www.ehow.com/how_4489318_trou...ps-sensor.html
#9
yeah i agree, it could be your throttle position sensor that caused your air mass meter not to function well. if you want to troubleshoot it here's how http://www.ehow.com/how_4489318_trou...ps-sensor.html
holy ****... are you serious noobie???
this thread is from LAST YEAR.... dont be stupid. digging up old threads to further ask for advise is one thing... but dont ADD more advise so far after the thread died
#10
yeah i agree, it could be your throttle position sensor that caused your air mass meter not to function well. if you want to troubleshoot it here's how http://www.ehow.com/how_4489318_trou...ps-sensor.html
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09-23-2015 07:11 AM