O2 Sensor, Need HELP!
Thread Starter
Senior Member
Joined: Nov 2000
Posts: 798
Likes: 0
From: Richmond, VA
O2 Sensor, Need HELP!
Will a disconnected O2 sensor cause a change in the ignition timing sequence? Just read that it would (could?) in the modification section. I disconnected it to change my valve cover gasket, can't reconnect it and now my car has a "miss" in the idle. So I'm afraid to drive it before i get this "miss" figured out!!!!
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--Steve S-- 84 Trans Am 305 HO 5 speed, completely stock will soup up when i get some $$$$$$$$$$
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--Steve S-- 84 Trans Am 305 HO 5 speed, completely stock will soup up when i get some $$$$$$$$$$
Supreme Member
Joined: Jul 1999
Posts: 1,335
Likes: 2
From: Tucson, AZ, USA
Car: '92 Z28; Dk Teal; Her Pkg
Engine: 305
Transmission: Richmond 6 Spd
Axle/Gears: Moser 9", Detroit Locker, 3.70
I'm not sure what the ECM algorithm does when it detects a faulty O2 sensor - it's possible that the spark curve is modified. If the M/C solenoid on the carb is not "clicking" while the engine isrunning, chances are that the mixture is very rich, which could make the engine miss. The oxygen sensor will need to be reconnected.
Tim
Tim
Senior Member
Joined: Jun 2000
Posts: 712
Likes: 0
From: Los Angeles, Ca, USA
Car: 90 Camaro RS
Engine: 305 TBI
Transmission: T56
buy a new one....$20.
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Rick
90 Camaro RS 305 TBI
400 small block, Hooker 1 5/8 shorties, Random Tech Cat, Hooker aero chamber cat back on the way!!
TH700-R4 with Trans-Go shift kit (corvette servo on the way)
MacEwen Motorsports White Gauge Overlays
14" K&N X-Stream Open Element
GTS Headlight and Taillight covers
5% Limo Tint all around
Classic White Chevy Bowtie sticker on rear window
http://www.geocities.com/esvalenz
Man if my camaro were a rice-rocket all those mods would give me what...easily 50-60 hp!!!
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Rick
90 Camaro RS 305 TBI
400 small block, Hooker 1 5/8 shorties, Random Tech Cat, Hooker aero chamber cat back on the way!!
TH700-R4 with Trans-Go shift kit (corvette servo on the way)
MacEwen Motorsports White Gauge Overlays
14" K&N X-Stream Open Element
GTS Headlight and Taillight covers
5% Limo Tint all around
Classic White Chevy Bowtie sticker on rear window
http://www.geocities.com/esvalenz
Man if my camaro were a rice-rocket all those mods would give me what...easily 50-60 hp!!!
Member
Joined: Dec 2000
Posts: 408
Likes: 0
From: Chesterfield, VA
Car: '86 IROC, black and sharp
Engine: 305 tpi, bone stock
Transmission: 700r4
Axle/Gears: 3.42 pos w/rear db
When the O2 sensor in the 83 Z goes bad we get a check engine light, but the car runs fine. Whe the O2 sensor in the 81Z goes out it pings like crazy when you hit the gas hard. O2 sensors are cheap, except at the dealer.
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Z's r Best
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Z's r Best
Thread Starter
Senior Member
Joined: Nov 2000
Posts: 798
Likes: 0
From: Richmond, VA
I replaced the Sensor, car runs great and it did ping at startup and a bit after warmup (i mean miss) but it is all good now, and it's great to have this thing back on the road after a 1 month vacation. (for the car, ran out of $$$). But i discovered it is a LG4, non-HO engine 
so now i have to make it better than those HO punks
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--Steve S-- 84 Trans Am 305 HO 5 speed, completely stock emissions restricted slow 150 hp(chilton rating) 240 torquer that needs RELEASE!!!!
P.S. Daily Driver
so now i have to make it better than those HO punks------------------
--Steve S-- 84 Trans Am 305 HO 5 speed, completely stock emissions restricted slow 150 hp(chilton rating) 240 torquer that needs RELEASE!!!!
P.S. Daily Driver
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