Check for vacuum leaks.
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SOURCE: 1999 pontiac grand prix . will not run
If wiggling the wires cured the code, then one of the wires is broken inside the insulation. Pull on each wire one at a time. look for the colored insulation to stretch, this will be the broken wire. For the other car that wont rev up, this is a common when the catalytic concverter is plugged up. This will also cause MAF codes, and in turn, TRAC OFF light.
See http://www.greatautohelp.com
SOURCE: CODE PO102 after Mass Air Flow Sensor replaced
Most faultcodes don't disappear automaticly, the have to be 'reset' manually after repairing. It sounds like the code didn't get erased after replacing the MAF. You could try to disconnect the battery for 10 minutes (disconnect and reconnect the negative (-) pole), which should erase the code.
Whenever the engine light still comes back on after that, there probably still is some (other) problem ...
SOURCE: how do i replace mass air flow sensor on a 1999
u don't replace the whole sensor just the actual heated wire part, that is held in place by two star screws, see picture.
A-1 CARDONE Part # 7450015 {[Mass Airflow Sensor] Reman.} $142.00
SOURCE: Location of mass air flow sensor, 2000 Grand Prix GTP
3.1 or 3.8 motor, mass air flow is in the fresh air (goes from air cleaner to engine)
SOURCE: where is the mass air flow sensor on 2000 pontiac
mass air flow sensor is located on the air hose that leads to the air filter if you have the part just look for the same look to make sure.
P0174 - Fuel Injection System Too Lean Bank 2
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel Consumption
Possible causes
- Intake air leaks
- Front Heated oxygen sensor may be faulty
- Injectors may be faulty
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Mass air flow sensor may be faulty
- Incorrect PCV hose connection
Possible solution
Dirty air filter of faulty air flow sensor are common causes of the problem.
Bottom line possible defective Mass airflow sensor and or O2 sensor in cylinder bank number two.
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is that very expensive??? I've spent 600.00 dollars in 2wks.
Jeremy do you think it could be and ERG valve or ignition wire.
Depends on what ns if any thing is leakin. It could cost you less than a dollar or a couple hundred dollars. I can tell you you already wasted $600 dollars. It would be in your best interest to bite the bullet and pay a shop to smoke test the vehicle for vacuum leaks. This is the most effective way to pinpoint the problem.
If the egr valve where stuck open there old be a code for out of range and there would be a noticeable misfire at idle. Th bra
The brake pedal may also be hard to press nd the vehicle may vev not start.
If the ignition wires where bad you would have a misfire code. The engine would be running rich due to in burnt fuel entering the exhaust.
its running lean??? ok I'll have it checked for vacuumn leaks that shldnt be very expensive already wasted enough $$. may just need a hose all the time.
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