2002 Volvo S40 Starting/ Running Issues

Tiny
RWEHLING13
  • MEMBER
  • 2002 VOLVO S40
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 75,627 MILES
My car started having start issues back in May. I would crank for a few seconds before it would finally turn over and start. I replaced the fuel filter, but it has not corrected the problem. My next step was to replace the fuel pump, but drove it to work this morning, got in it to leave for lunch and the battery was dead. I went to jump the car and noticed that the neg. Battery cable was really corroded, and I also noticed that the car had the original Volvo battery in it. Could these issues all stem from a week battery and poor contact? It was also cooler this morning than it had been so the battery could have also been weak because of this. I was able to get the car started by jumping it, but could not take my foot off the gas peddle because the car would die. When I got home the alternator had charged the battery enough to where the car would crank, but the only way I could get it started was to push on the gas and leave my foot on the peddle to keep it idled up. I can hear the fuel pump come on, but it is making a high pitched sound. I am now at at a loss, is this due to the batter, the fuel pump, or the fuel pressure regulator, or a faulty O2 sensor? The check engine light has been on for over a year. It originally came on when the car had 45K miles on it and the car now has 75K miles on it. Any suggestions on my best approach of attack?
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Tuesday, October 7th, 2008 AT 11:42 AM

4 Replies

Tiny
RACEFAN966
  • EXPERT
Ok first I would get the car scanned and find out why the engine light is on and have it turned off too. Make sure to get the code so you can find out what it is. As for the fuel pump making noise this is not good it is probable going out. The battery is probable just weak so the cold weather showed its weakness I would probable replace it. Hope this helps and thanks
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Wednesday, October 8th, 2008 AT 8:00 PM
Tiny
IMPALASS
  • EXPERT
Hello - you may have a series of problems. I would start with the simple and work my way on. A corroded battery cable will certainly cause many issues. With the computers in the cars today the electrical system must be working at its best. Fuel pumps can have many issues with just a couple volts off. Anyway, I would first replace if badly corroded or clean the battery cables. The best way to clean is with Arm and Hammer baking soda and water. Take a cup of water, pour in a couple of table spoons of the baking soda and dip the cables into the solution after you have cleaned off the bulk with a wire brush. DO NOT let that solution get into the battery. This dilutes battery acid. Don't be afraid to gently rub the ends of the cables in the solution with a small brush. It will turn green and be nasty. Wear goggles and gloves. Don't get any on the paint or clothes. It will discolor and eat through things. Once you are done with the Arm and Hammer, put the box in the refrigerator to let it soak up any odors in there. Then you know where it is for next time! Clean the battery terminals really good. They have battery brushes for that. Once all is replaced or very clean and dry, ensure the battery has a really good charge on it. You can then take the car up to Auto Zone or O'Reilly's and for free they will bring a machine out to the car and check out the battery, starter and alternator. Usually the first cold snap kills a weak battery. Thus the being cooler also was a factor. While you are there, Auto Zone, I think O'Reilly's will also, but AZ for free will pull your codes. You must find out what codes are in there. That will lead to the next step of repairing those items. Then from there if it is not running correctly provide us with some more info. It may be say, the fuel pump, a relay or other things but first we need to get a good battery, alternator combo going to check the other. Also, once you fix the items shown by the codes, they can also clear all codes to start fresh. From that point on though, anytime you get a light, stop by and get the codes pulled for free. Good luck, be safe and let us know if this doesn't work.
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Wednesday, October 8th, 2008 AT 8:32 PM
Tiny
RWEHLING13
  • MEMBER
Okay, I took the battery in to have it check along with diagnostics ran on the computer. The battery was bad so I replaced it. The diagnostics computer was coming up with 11 different codes due to the fact that the light has been on a year and a half so we cleared the computer and I was told to come back in a couple day to have it ran again. One thing I did realize about the car is the fact that when the battery died corresponds exact to the day that the car started stalling. Prior to this happening the only issue the car was having was that it took longer than normal to start, but it would start right up without any assistance from the gas pedal. It would also stay running and had no real problems stalling at intersections or when my foot was off the gas pedal. Is there anyway that the removal of the battery triggered the computer to malfunction and cause the car to idle incorrectly? As of right now as long as my foot is on the gas pedal the car runs fine. How can this problem be corrected. I was told that driving it 40 to 50 miles will allow the computer to reconfigure itself and correct the stalling problem. Is this true, or do I need to take it to the Volvo dealership?
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Wednesday, October 8th, 2008 AT 9:51 PM
Tiny
RACEFAN966
  • EXPERT
Ok great the battery is now good. Now did you clean the battery term. Ends at all? The guy is right wait a week or so and go back and see if any codes come back. As for running it not heard of that but have heard that running the engine at 2000 rpm for about 2 minutes in park or neutral to allow the computer to relearn the peramiters. As for holding the gas pedal to keep it running this could a few different things. As far as taking it to the dealer or a good foriegn repair shop this depends on how you feel you can diagnos the problem and what tools you have. First you will need a volt meter (battery opperated one). If you just don't feel comfortable enough with working on it to this extent then a good shop is the answer from here.
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Thursday, October 9th, 2008 AT 8:50 AM

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