The pump is used to inject fresh air in to the exhaust system at the catalytic converter. The goal is for the oxygen to react with the catalyst and heat to burn up any unburnt hydrocarbons left over from the combustion process. The catalyst in your 1985 Suburban probably quit working about 15 years ago. Unless you replace the converter the pump is having zero effect upon your vehicles emissions. Considering your speaking of a 454 cubic inch engine removing the pump will also have little effect upon your engine either. It takes less than 0.125 horse power to turn it. My suggestion is remove the 454 infact in this day and age I suggest removing the Suburban if at all possible The savings in fuel cost could net you a new car payment.
it has a pre cat and a regular cat
Look under the vehicle and count them.
Look under your vehicle and count them.
Walk outside, bend over, look on the vehicle and count them.
Yes it will. Your engine will not run properly and you will get poor mileage and loss of power. And besides that is it a federal crime to remove the catalytic converter from any vehicle.
Assuming this vehicle has duel exhaust with duel catalytic converters, bank 2 sensor 2 would be the O2 sensor after the passenger side catalytic converter.
by wackin it ;)
There are many different kinds of suburban radio problems. These problems include but are not limited to shorting of the signal.
They are in the exhaust system/pipe. Just start at the engine and follow the exhaust back to the muffler and you will see them. They are about 3 inches long with a electric wire hooked to them. They just screew out. I believe ther is 3 of them but there might be 4. just look at the exhaust pipe real good. On the 8.1 engine, two are located ahead of the catalytic converters in the exhaust headers and two in the tail pipes after the catalytic converters.
Yes it does. unless someone took it off.