2000 Buick Park Avenue Service Engine Soon

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JUSTINPAUL411
  • MEMBER
  • 10 POSTS
Ok, on my 2000 Buick Park Avenue, the latest thing is the "service engine soon" Here is whats going on.

At first it would come on at 1/2 tank and ONLY come on in like 20 degree or lower weather. Then I realized I needed to click the gas cap three times. keeping it above 1/2 tank and clicking the gas tank helped. However the other day I hit a bump while turning and it had a little over 1/2 tank and the light came on. Later that evening I started the car and it was off. I filled up, the next day while driving to work on a smooth road (but still in 22 degree weather) the light came on again.

It seems to happen no matter what I do with keeping it filled. I only use Mobil , and I use premium fuel. And it didnt do this at all in warm weather.


What are some simple things that could be going on and what are more exspensive things?

COuld having the fuel system cleaned/ filter changed be the problem?

Or is the 02 sensor bad? If so how much...

Or is this normal for this ungodly cold weather?

Justin

Buick Park Avenue Prestige 2000 750000 miles
Feb 27, 2006 at 5:19 PM
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MVANNESSJR
  • ✓Experienced Mechanic
  • 223 POSTS
Instead of playing guessing games I recommend having the codes read. Let us know what the trouble codes are and we will be able to help you better.
Feb 27, 2006 at 11:31 PM

Suggested Repair

Have the diagnostic trouble codes read before replacing parts. Report the codes so the Service Engine Soon light can be diagnosed instead of guessing at the gas cap, fuel filter, or oxygen sensor.

Conversation Summary

The owner of a 2000 Buick Park Avenue reports a Service Engine Soon light that first appeared at about half a tank in very cold weather. Clicking the gas cap and keeping the tank above half full seemed to help at first, but the light later returned in cold weather regardless of fuel level, including after hitting a bump and on a smooth road. It did not occur in warm weather. The owner asked whether a fuel-system cleaning, fuel filter, oxygen sensor, or the cold weather could be responsible. The expert advised against guessing and recommended reading the trouble codes before further diagnosis.

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