Lazy O2 sensor? 1997 3.8L Buick surges going up hills
06-05-2001, 10:21 PM
#1
Junior Member
Thread Starter
Join Date: Jun 2001
Location: CT, USA
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
Lazy O2 sensor? 1997 3.8L Buick surges going up hills
Hi, is there any way to clean a heated 02 sensor from a 1997 3.8L Buick LeSabre V6? The car only has 37,000 miles, but occasionally going up a hill in overdrive (going at least 45 mph, but up to 110 mph), the rpm's will rhythmically surge several hundred rpm's. The car also idles a little erratically (it idles smoothly most of the time but the revs jump around every 30 seconds or so, then smooth out)I had a Flowmaster 80 series exhaust on the car, and, thinking that the free flow muffler was confusing my OBD II, I swapped the stock muffler back on. The car will still surge going up hills while in overdrive (especially if I give it enough gas in overdrive to load the motor pretty good, but not enough gas to make it kick down to 3rd). A GM technician told me that a lazy O2 sensor may cause my condition. I know that the O2 sensor is on my rear exhaust manifold. I think there is also a sensor behind the catalytic converter? Could this sensor be at fault too? I'd appreciate anyone's thoughts on why my V6 would be acting up while cruising up hills in overdrive.
[This message has been edited by Mister MOPAR (edited June 05, 2001).]
[This message has been edited by Mister MOPAR (edited June 05, 2001).]
06-05-2001, 10:30 PM
#2
Moderator
Join Date: Apr 2001
Location: Bayville NJ and Newark at NJIT.
Posts: 1,408
Likes: 0
Received 1 Like
on
1 Post
O2 sensors are only like 20 bucks, and if a GM tech says that might be it, just get one and try it out. If it's not that, might wanna check the fuel system out.
------------------
1985 Camaro SC - 2.8L, auto.
Mods:
Removed air baffles, mandrel bent cat-back pipes (but stock replacment muffler, Dynomax Turbo and Catco converter are on thier way)
------------------
1985 Camaro SC - 2.8L, auto.
Mods:
Removed air baffles, mandrel bent cat-back pipes (but stock replacment muffler, Dynomax Turbo and Catco converter are on thier way)
06-06-2001, 10:53 AM
#4
Supreme Member
Join Date: Mar 2000
Location: Central NJ, USA
Posts: 13,414
Likes: 0
Received 6 Likes
on
6 Posts
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
I doubt you'll find much info on this Camaro/Firebird website regarding your '97 Buick Lesabre 3.8. Search the internet for a Buick website.
------------------
-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!
------------------
-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!
06-12-2001, 10:23 AM
#5
Moderator
Join Date: Apr 2001
Location: Bayville NJ and Newark at NJIT.
Posts: 1,408
Likes: 0
Received 1 Like
on
1 Post
Just reread this post. It's a HEATED O2 Sensor... DOH! Sorry... I missed that part. Yeah, they're more expensive than the regular ones...
Hehe, sorry again...
------------------
1985 Camaro SC - 2.8L, auto.
Mods:
Removed air baffles, mandrel bent cat-back pipes (but stock replacment muffler, Dynomax Turbo and Catco converter are on thier way)
Hehe, sorry again...
------------------
1985 Camaro SC - 2.8L, auto.
Mods:
Removed air baffles, mandrel bent cat-back pipes (but stock replacment muffler, Dynomax Turbo and Catco converter are on thier way)
Thread
Thread Starter
Forum
Replies
Last Post
Mister MOPAR
Tech / General Engine
3
06-06-2001 06:04 PM
