Q: where does the 02 sensor plug in to a 1985 Olds. 98
where does the o2 sensor plug in?
My car has an automatic transmission.
Hi Wayne. Thanks for contacting us today. Back in 85, GM V6 motors only had one O2 sensor. It was considered an upstream sensor, which means that it was installed near the center of the exhaust manifold. Downstream sensors were added in the mid-90’s - which were added right before and right after the catalytic converter. You might want to refer to a service and repair manual for your 85’ Olds 88 to review the recommended steps for removing and replacing the O2 sensor.
The statements expressed above are only for informational purposes and should be independently verified. Please see our
terms of service
for more details
Get an instant quote for your car
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
What others are asking
How do you add oil to the engine?
Ideally, you’ll never have to add oil to your engine, but it is definitely possible, particularly if you go for long periods between oil changes (not recommended). If you check the oil and find that the level is below the...
Engine chugs while acceleration
While adding sea foam and replacing the fuel filter are very good services for your truck, I wouldn't expect them to fix your issue. Usually, this is a sign there is something binding in the drive train or wheels. There...
Tire is stuck on the truck, I can't change my tire because the tire won't come off
Hi, thanks for writing in. The rim has a centering part that will cause it to stick to the hub sometimes after being on the truck for a long time. You will need to remove lug nuts and after making...
Barometric Pressure Sensor Error Code
The next step would be to do a proper full pinpoint test indication in the troubleshooting charts for the code that you got. This test will check the wiring, connections, ECM connections and the ECM itself. If you do not...
Fixed timing belt and harmonic balancer, now car will not start? 1996 Mitsubishi 3000GT
Hello - there are several possibilities here for this "no-start" problem (https://www.yourmechanic.com/article/how-to-troubleshoot-a-car-that-is-hard-to-start-by-jessica-howe), but they will have different symptoms. If you are getting no spark at the plugs, that could indicate a failed or incorrectly-installed crankshaft position sensor. If you get...
Driving down the road in 2013 Nissan altima coupe and the vehicle stopped pulling on its own.
Hi there. If you have replace the sensor and the codes are coming back on, the there could be an issue with the shift solenoids inside the transmission. The code P0500 (https://www.yourmechanic.com/article/p0500-obd-ii-trouble-code-vehicle-speed-sensor-malfunction-by-spencer-clayton) is coming up for the output shaft speed...
Why would someone charge me $600.00 to replace battery cable-positive side?
Hello - on some vehicles, the positive battery cable is quite long, going from the starter to the rear passenger seat or trunk area - literally 15' long. Besides costing quite a bit for the part, the labor to install...
Cost for head gasket on 2001 dodge durango
Hi there. A blown head gasket is typically caused by an overheating problem. As the engine overheats, hot coolant and excessive temperature can cause the gasket itself to burn and cause coolant to flow into the combustion chamber and other...
When I turn my key the dash bored goes on and the lights but radio doesn't and car won't start
Hi There, It sounds like you may have a bad ignition relay or potentially a faulty starter relay. You may want to check the ignition relay (https://www.yourmechanic.com/services/ignition-relay-replacement). When you turn the key to the On position, the ignition relay switches...
Related articles
Oldsmobile Certified Pre-Owned (CPO) Car Program
If If you are in the market for a used Oldsmobile vehicle, it may be that you have considered a Certified Pre-Owned, or CPO, vehicle. CPO programs allow owners of used cars to drive with confidence, knowing that their vehicle...
P2141 OBD-II Trouble Code: Exhaust Gas Recirculation Throttle Control Circuit Low
P2141 P2141 code definition Exhaust Gas Recirculation Throttle Control Circuit Low What the P2141 code means P2141 is an OBD-II generic code for the engine control module (ECM) detecting the exhaust gas recirculation (EGR) control valve circuit is low. This...
Understanding the Oldsmobile Oil Life System and Service Indicator Lights
Car symbols, or dashboard lights, are a car service reminder. The Oldsmobile Oil Life System indicates when and what service your car needs.
Browse other content
Maintenance
Estimates
Cities