Question about 1999 Oldsmobile Alero

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99 ALERO COUPE NOT ACCELERATING

As I was driving my alero today, the low gas light rang(which is has done many times in the past few weeks because I haven't filled it up in awhile) and then shortly after,as I was accelerating from a stop, and when it got up to about 45 the speed dropped, down to about 30, and wouldn't let me speed up. And I was pressing the gas, but it didn't go any faster.It bucked a little at first, but immediately the "Engine light" came on. As I got to a hill and started to roll down it at 30 mph, it would then let me accelerate a little bit more. Even though I haven't had the problem since earlier today, the light is still on.
Could be like trash in the fuel filter? Could that be because of bad gas? The car has almost 160,000 miles. Could you tell me what other signs I will notice if the fuel pump is burning out? Is that expensive to fix? Where is the fuel pump, and fuel filter located on the alero? I appreciate it.
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Your fuel pump is in the tank but first check your hoses on your intake for vacume leaks.Could have a bad intake gasket too.it sounds like your engine is getting to much air which will cause your vehicle to run lean. also clean your mass airflow sensor. Soak it in carburetor cleaner for a couple of hours it is probably dirty. i had this problem too.another resource could also be bad o rings on your injectors. Hope this gets you in the right direction.

Posted on Feb 04, 2010

  • terian_5 Feb 04, 2010

    if your engine is getting too much air then the 02 sensors will not work because tthe vehicle is running too cool which will throw a no activity code to the pcm which puts your engine light on

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You could have a plugged catalytic converter. Best test is to unbolt the exhaust in front of the converter. Some models are easier than others and you risk the chance of snapping bolts if you don't use a torch.

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well, usually in this case, if your coolant resovior is full and you are still holding psi in your system, it is a bad thermostat. what the thermostat does is when the engine block heats up, the coils of the thermostat expand and let coolant through to cool the engine block. so what might be happening is your thermostat is bad, and not letting coolant through, which will cause your motor to over heat.

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Testimonial: "THANKS SO MUCH!! because i couldn't understand why it was still getting up there on the guage. Sometimes it won't, sometimes it will."

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