1998 Chevy Malibu

Tiny
279987
  • MEMBER
  • 1998 CHEVROLET MALIBU
1998 Chevy Malibu 4 cyl Front Wheel Drive Automatic

My daughter has a 1998 Malibu, 2.4L. The problem is that you can be driving along and the motor will just shut off. This happens (so far) when the motor is hot. There isn't any theft device on this because it is a no power windows, locks, or remote starting devices at all on this car. I found that it will start by pressing the throttle all the way to the floor and cranking the motor over. It doesn't take long for it to start but starts in a very rich blubbering condition. Sometime when you rev it up up it will clean up and run fine for a while but it's getting worse now. When you are driving even in a almost "limp home mode", and you press down on the accelerator it will really response to the call for the acceleration. I was told that it was the fuel pump but due to the rich condition and the acceleration ability I personally don't believe thats the problem. I believe it's in the ignition area. I know this car is plug sensative and have replaced the plugs not a long time ago. I have to replace the fuel pump and sending unit (as you probably know already they come together) anyway because when the gas gauge comes down off of the full mark when full of fuel, it will only come down half way then it will go back to the full position. So anyway that issue will be taken care of. Talk about scewy! Anyway do you have any ideas?
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Monday, November 16th, 2009 AT 8:36 AM

4 Replies

Tiny
PEAR69
  • MEMBER
Is the check engine light on?
When you start the engine, all of the lights on the dash board light up. This is the computer checking the systems --- The next time you start the engine, observe all of these lights closely. Look for a light that says "security" or "passlock". Post back and let me know if there is a light (somewhere) on the dash that flashes "security" or "passlock" at start up.
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Tuesday, November 17th, 2009 AT 1:38 AM
Tiny
279987
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I found the problem ! The fuel regulator started the final event. Motor seized. Happy day!
Thanks for your help.
Mike
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Friday, December 4th, 2009 AT 8:08 AM
Tiny
PEAR69
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That is unfortunate.
I was reading your posts and I noticed that you started 3 new questions (or posts) on this same problem. It is too late now - but - if you just kept the origional post going, you would have solved the problem 3 or 4 months ago. A simple test that could have been preformed to find a failing pressure regulator is --- hook up a fuel pressure tester - start engine - then shut off. Observe how fast the fuel pressure goes down. If it goes down quickly and steady then the pressure regulator is leaking or you have a fuel leak.
Starting new posts on the same problem is never a good idea.
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Friday, December 4th, 2009 AT 8:14 PM
Tiny
279987
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Thank you for your help but the car would work fine then just change state. I also know that you know that you know that you can work on a car while you're running down the street beside it and I have two teen age son that were trying to take advantage of the fact it was home for repairs soooooo, I guess enough said.
Anyway, I just want to say thank you for you help and for your service. Well done.
Thanks,
Mike
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Tuesday, December 8th, 2009 AT 8:24 AM

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