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No. You have other problems involving the induction, fuel pressure, or spark on the engine. If the check engine light hasn't come on, then a good place to start is with is the fuel and air filters. If they are good, then next would be plugs and wires. Also look for vacuum leaks. We had an 87 that ran terribly, replaced all the above, and found out that the MAP sensor was bad. No codes coming from the PCM. Frustrating, and time consuming.

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โˆ™ 2004-12-18 06:12:24
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Q: Would a vehicle speed sensor circuit cause a 1991 GMC truck to run poorly and if so why?
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Why does your 1987 Chevy g-30 flash code 45?

Oxygen Sensor Circuit (Rich Exhaust). This may of may not be a defective O2 sensor. It may be something else that is effecting the O2 sensor. But considering the vehicle is 22 years old, I would suspect the O2 sensor needs replacing. I would replace the O2 sensor.


What would happen if you unplug the engine speed sensor?

It would depend on the vehicle. most likely the vehicle would run, but not well. this puts the computer in limp home mode. most car computers will allow the vehicle to run with one major sensor undone.


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The bank 1 sensor 2 O2 sensor on that vehicle should be the sensor after the catalytic converter. Inspect the wiring for damage, cuts and such, if the wiring looks okay it is probably the heater circuit within the sensor, replace the sensor. Unplug the wire harness from the sensor and cut the wires off at the sensor. This will allow you to slip a 7/8" box wrench over the sensor to remove it. Install the new sensor using a 7/8" open end wrench, tighten it as you would a spark plug. Reconnect the wire harness.


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A TPS is normally known as a "throttle positioning sensor" price would be dependant on the vehicle.


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PLease have the codes read with a scanner and that will point you in the correct direction. If i was to hazard a guess i would say the Vehicle Speed Sensor or circuit has gone bad.


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Knowing the year, make and model vehicle you have would help but, if it has a crankshaft sensor maybe the sensor or the sensor wiring got damaged.


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The engine would be running poorly and the check engine light should be illuminated with related codes.


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It would depend on what year the vehicle is.


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More than likely the heater burned out in the B1 S1 O2 sensor. First locate the B1 S1 O2 sensor, it would be the one threaded into the exhaust pipe directly behind the bank of cylinders that contain the number one cylinder. Inspect the wiring leading to it looking for damage/cuts in the wiring. If the wiring looks good, disconnect the sensor from the vehicle harness, cut the wires off of the bad sensor, slip a 7/8" box wrench over the sensor and remove it by turning counterclockwise. Install the new sensor using an 7/8" open end wrench and tighten as you would a spark plug. Plug the new sensor into the vehicle harness and your done.


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If your vehicle speed sensor is going out would that cause your check engine light to come on?

It could


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What does HO2S heater circuit bank 2 sensor 1 P0050 indicate on a 2002 dodge Dakota 4.7?

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Why would the thermometer read OC for the outside temp on your 02 Trailblazer?

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