1999 Cav 5-speed 2.2
Recently i went on a road trip and my flex pipe broke in half. I had to fix it on the road with the exhaust wrap till i could get home. I got home bought a new flex pipe, cut the old one off and welded the new one on. Now i am having a lean issue with my car. Its throwing a PO171 error code. the O2 sensor after the car is about 6 months old. Other than that, i haven't changed the cat or first o2 since owning the car. Im not sure what would cause my car to lean out. It does not throw a CEL but when i hook my code reader up i get the PO171. Any advice as to my next step of attack would be great
thanks!
1999 - Cavalier - 5speed - Exhaust - 17" rims - carbon fiber hood - the beater
anyone?
1999 - Cavalier - 5speed - Exhaust - 17" rims - carbon fiber hood - the beater
Car doesn't idol very well at all. Took it for a drive around the block today. started it up and it idoled at 2000rpm for maybe 2 seconds and than dropped. drove around the block fine, had power when accelerating. When i can to my first stop, the car started to idol bad and when slowing down to a stop the car would idol at 1500 for about 2-3 seconds. than go to normal.
Any ideas what so ever would be great guys!
1999 - Cavalier - 5speed - Exhaust - 17" rims - carbon fiber hood - the beater
lol talk about nothing at all.
1999 - Cavalier - 5speed - Exhaust - 17" rims - carbon fiber hood - the beater
this is getting me nowhere.
1999 - Cavalier - 5speed - Exhaust - 17" rims - carbon fiber hood - the beater
That idle problem sounds normal to me...start up always fires it up to about 2000 rpms,. When slowing down mine always idles at 1500 until its at full stop and honestly, im not sure why it does that, but every car ive driven does that. The lean code, you said it doesn't throw a CEL but the scanner shows a code, just clear the code and drive 60-80 miles, see if it comes back. I feel like that could be a memory code or something when the flex pipe actually blew, it ran lean and the code never got cleared after you fixed it.
95LsCoupe wrote:That idle problem sounds normal to me...start up always fires it up to about 2000 rpms,. When slowing down mine always idles at 1500 until its at full stop and honestly, im not sure why it does that, but every car ive driven does that. The lean code, you said it doesn't throw a CEL but the scanner shows a code, just clear the code and drive 60-80 miles, see if it comes back. I feel like that could be a memory code or something when the flex pipe actually blew, it ran lean and the code never got cleared after you fixed it.
thanks for the replay. Its just been different since the trip. I changed the fuel filter last September when i bought the car. I put well over 600km on my last tank and I'm think i might have sucked up some crap. I have another fuel filter on hand so im going to change that tomorrow see if that fixes the issue.
1999 - Cavalier - 5speed - Exhaust - 17" rims - carbon fiber hood - the beater
Issue still there. code cleared. Does anyone have any ideas?
Fuel pump maybe on its last legs?
1999 - Cavalier - 5speed - Exhaust - 17" rims - carbon fiber hood - the beater
gotta be someone on here who can help out?
1999 - Cavalier - 5speed - Exhaust - 17" rims - carbon fiber hood - the beater
Seeing as I have had ONE reply to this thread I have figured out the issue on my own no thanks to anyone on here besides "95LsCoupe" anyways...if you were wondering it was the O2 sensor in the manifold, my ngk spark plugs arced, and a broken wire for the MAP sensor. Anyways all back together now.
Hopefully someone will come across this one day and maybe find the answers they need.
1999 - Cavalier - 5speed - Exhaust - 17" rims - carbon fiber hood - the beater
If id have seen this sooner, i may have been able to help lol. Though, you need to chill out..
I'm surprised your car even ran that way. You were running on 3 cylinders with no way of measuring air volume lol.
One thing i can offer to anyone reading this with a similar issue, is not to change your 02 sensor first. The 02 was probably fine, and reading correct. His misfire was creating a false lean code because the oxygen wasn't being burned with the fuel. Always fix a misfire before blaming sensors!
Sorry guy.
Kris Brickman wrote:If id have seen this sooner, i may have been able to help lol. Though, you need to chill out..
I'm surprised your car even ran that way. You were running on 3 cylinders with no way of measuring air volume lol.
One thing i can offer to anyone reading this with a similar issue, is not to change your 02 sensor first. The 02 was probably fine, and reading correct. His misfire was creating a false lean code because the oxygen wasn't being burned with the fuel. Always fix a misfire before blaming sensors!
Sorry guy.
I did fix the miss, and the o2 was done. Thanks guy.
1999 - Cavalier - 5speed - Exhaust - 17" rims - carbon fiber hood - the beater
