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Jessica Ciaccio Posted on Sep 29, 2009

99 Pontiac Firebird won't go over 20mph then engine cuts out

Service Engine soon light is on. Just had a new radiator, mass air flow sensor,and gas tank put in 4 months ago as well as new gaskets and maybe a fuel injection pump but I have to check. My car will reverse fine but will not excel over 20 mph then the engine completely cuts out. When I try to restart it, it just sounds like it's going to die again. Any ideas as to what's wrong?

  • 3 more comments 
  • Jessica Ciaccio Sep 29, 2009

    no codes came up when they hooked it to the machine. Had $2,000+ work done on it in the last 7 months and was ripped off the first place I took it too. Knid of broke at the moment so just trying to get some ideas first before I take it in again.

  • Jessica Ciaccio Sep 29, 2009

    7 months ago I too it in because my engine was smoking. Took it to the shop and they said I had a cracked radiator, blew a gasket, that my coolant was leaking into my oil, and needed to replace some valves. After all that was fixed which came out to over $1000 i had another problem 4 months ago. The new problem occurred when I was running low on gas so I pulled over and filled the tank up all the way full then my car wouldn't start at all and the engine would barley rev. Turns out my fuel injection system went out out of the blue. A new gas tank was put in which was unclear to me, a new fuel pump I believe and fuel filter, another $1000. This new problem just started happening a week ago. I got a new mass airflow sensor 30 days ago because that was the only thing preventing it from passing inspection at the time. this car is giving me a headache.

  • Jessica Ciaccio Sep 30, 2009

    no they did not but that was 4 months ago and my car was running perfectly fine up until a week ago. Has about 155,000 miles on it. I was putting about 200+ miles on it every day for two months straight 2 months ago.

  • Jessica Ciaccio Sep 30, 2009

    check engine light comes on and off. Auto Zone is right up the street, last time I went it was suggested to put oil stabilizer in but that didn't do anything. Now my car won't even get up to 2 mph and when I tried to step on the gas it made an awful sound so I gave up on trying to make it anywhere.Could it be the timing belt?

  • Jessica Ciaccio Oct 15, 2009

    all fixed. it was a clogged converter, part was $250

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  • Posted on Aug 16, 2010
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Ttry the coil packs I had the same problem. To find out pull one spark plug wire at a time and lay it on top of the coil pack were it was taken from and see if it is arching.

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3answers

Can low volage from a bad faulty battery makes the mass air flow sensor not work properly

Symptoms of a bad mass air flow sensor
As a result, a bad mass air flow sensor causes various driveability problems, including a no-start, stalling, lack of power and poor acceleration. In addition, a faulty mass air flow sensor might cause the Check Engine or Service Engine Soon light to come on.
https://www.samarins.com/glossary/airflow_sensor.html
0helpful
1answer

What could be causing my 1998 Pontiac firebird v6 3.8l,to "backfire"-"clunk",and lose power when taking off, or getting on the highway???

A bad mass air flow sensor , TPS - throttle position sensor , plugged catalytic converter ! You should have it checked out ! Is the check engine light lit ? or any other lights ?
1helpful
3answers

2003 Nissan Altima 2.5L Service Engine Soon Light is on, Auto Zone says codes are for MAF and O2 Sensors. Car hard to start after driving a while but when starts appears to run smooth. Auto Zone thi

ok lets start with the codes they say your getting. P??? which 1's and how many. there are few o2 sensors, are they next to the Exhaust next to the converter? MASS AIR FLOW -MAF use this, for now i am guessing, until i see the correct codes your are getting. this could be the 1 you may have below, please read it........
  • P0103
    Mass Air Flow Sensor Circuit High Input
  • Possible causes
  • Faulty mass air flow sensor
    - Intake air leaks
    - Dirty mass air flow sensor
    - Dirty mass air filter
    - Mass air flow sensor harness is open or shorted
    - Mass air flow sensor circuit poor electrical connection
  • Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor.
  • possible symptoms Engine Light ON (or Service Engine Soon Warning Light)
    - Engine stall
    - Engine running rough
    - Excessive fuel consumption
    - Excessive smoke
  • the code is generated when An excessively high voltage from the sensor is sent to Engine Control Module (ECM).
2003 NISSAN Altima Sedan OBDII Codes List
1helpful
1answer

2002 Pontiac Firebird acts like it ran out of gas and now won't even start. Could it be fuel pump or something else. Service engine soon light also comes on occasionally due to emmisions sensor fr

with the key on engine off listen to fuel pump,if you can not hear the pump winning ,the pump is bad

if you can hear it,it might be working but create enough pressure
you can rent a fuel pressure gauge from auto store and check the fuel pressure
0helpful
2answers

What does error code p0172 and p0174?

P0172 - Fuel Injection System Too Rich Bank 1 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 connec
Possible solution Dirty air filter of faulty air flow sensor are common causes of the problem.



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.

0helpful
1answer

My 1999 Pontiac Firebird will not go over 10 to 20 mph. After trying to excel the engine cuts out. When trying to restart it, the engine rumbles then dies. After waiting a few minutes its the same thing...

mine done the same thing and i had to replace my throttle body sensor. you can just buy the sensor , well not on mine anyway. i have a v-6 so maybe thats your problem.
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1answer

99 buick regal 3.8 starts for 3 seconds and shuts down,

Had the same problem drove me nuts until I tried disconnecting Mass Air Flow Sensor, the car should drive normally but with a "Service Engine Soon Light" on. Mass air flow can run from $140 up, picked one up at recycler for $40.

Worth a try.
0helpful
1answer

Check engine light

MAF is Mass Air Flow it is located in the air induction pipe between the air filter box and the throtle body. Try getting some Mass Air Flow Sensor cleaner and clean it. Make sure it is completely dry before you reinstall it. Good Luck.
0helpful
2answers

1999 pontiac grand prix . will not run

If you unplug the MAF sensor it should run using the default mapping. I'm having the same problem, but I want to figure out why it won't run with the sensor connected.
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