is it just my car??
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From: Maryland...DO I HAVE TO ADMIT TO THAT?!
Car: 1991 Chevy Camaro RS
Engine: 283
Transmission: 700r4 Auto
is it just my car??
is it just my car that about every year i need to replace my mass air flow sensor?????? i have a 1987 camaro 2.8 v6....everyone i talk to around here never has any problems with it....doesnt my car like me?-lol...that thing gets to be pretty expensive....anyone have any suggestions??? PLEASE let me know....
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Joined: Dec 2001
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From: Toledo Ohio
Defintly check wires and sockets related to the MAF. Its possible you have a faluty wire somewhere. It shouldnt be to hard. Maybe 2 hours tops if you get a little help it may go by easier and less frustrating also. It helps if that help comes from someone with some electrical know how.
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18,
The MAF can only measure the air that is travelling through it. If that volume isn't enough to satisfy the ECM, the problem could be elsewhere.
You may have leak in the intake ductwork, allowing some air to enter the engine without being measured. That includes vacuum leaks, PCV leaks, EGR leaks, intake duct and hose leaks, using a breather type oil filler cap instead of a sealed one, plenum and intake gasket leaks, brake booster leak, etc.
The ECM also determines the correct amount of intake air based on engine RPM and throttle angle. While the RPM measurement is fairly direct and accurate, the throttle angle is reported to the ECM by the Throttle Position Sensor. A TPS reading that is incorrect can "fool" the ECM into thinking the throttle is more open than it truly is, and cause the ECM to expect more intake air. Make sure the TPS voltage at the idle position is correct.
And of course, the MAF can only do its job if it is powered up and connected correctly, so check the connections and power relay as suggested.
The MAF can only measure the air that is travelling through it. If that volume isn't enough to satisfy the ECM, the problem could be elsewhere.
You may have leak in the intake ductwork, allowing some air to enter the engine without being measured. That includes vacuum leaks, PCV leaks, EGR leaks, intake duct and hose leaks, using a breather type oil filler cap instead of a sealed one, plenum and intake gasket leaks, brake booster leak, etc.
The ECM also determines the correct amount of intake air based on engine RPM and throttle angle. While the RPM measurement is fairly direct and accurate, the throttle angle is reported to the ECM by the Throttle Position Sensor. A TPS reading that is incorrect can "fool" the ECM into thinking the throttle is more open than it truly is, and cause the ECM to expect more intake air. Make sure the TPS voltage at the idle position is correct.
And of course, the MAF can only do its job if it is powered up and connected correctly, so check the connections and power relay as suggested.
Thread Starter
Supreme Member
iTrader: (2)
Joined: Jan 2003
Posts: 1,857
Likes: 0
From: Maryland...DO I HAVE TO ADMIT TO THAT?!
Car: 1991 Chevy Camaro RS
Engine: 283
Transmission: 700r4 Auto
thanks guys for your advice.....ill be looking into this....i also talked to a guy from chevycamaro.com & his advice was to get a "speed density update" from the chevrolet garage....do any of you all have this update?i wonder if this will totally cure the MAS problem if i get this update?
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