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1991 Oldsmobile Ninety Eight Regency - Page 5 Questions & Answers
91 olds 98, 3.8 v6. changed the tps now it idles
Some TPS Sensors are adjustable. Usually held on by two screws, loosen the two screws slightly to twist the sensor either counter clockwise or clockwise. You should be using a scanner when installing a new TPS so you can visually see the values. If there is no adjustment on this particular one you may just have a bed new TPS. Make sure after replacing you clear codes/disconnect battery for 10 minutes and reconnect.
How much does it cost
It depends on your area. You can replace the ignition switch portion yourself. However the key lock has a chip on it that tells your cars computer it is ok to start. The dealer will have to re-program your cars computer to tell it that that key lock cylinder is ok to start the car.
What is recommended battery voltage?
It is not in the battery voltage but it is in the Ampere hour in the case of car or automotive batteries
So I think a 12Volt/65 AH battery could be good enough.
My1991 oldsmobile ran out of gas. NOw that I ahve
There's no sensor, but sometimes it takes a while to get the air out of the fuel lines and get it primed again. You can do this without cranking it by turning the ignition switch on, wait 5 seconds, turn it off. Repeat a few times. There is one other potential issue. Sometimes if a fuel pump was getting ready to go out and you run it out of gas, it knocks the fuel pump out and it needs replaced. First try priming it with ignition switch, and if this doesn't work, you will want to look at your fuel pump.
Every now and again engine will rev up and coolent
OK I think you have two unrelated issues here. The first is the coolant sensor. Either the sensor is broken or, just as likely, there is a problem with the wires going to and from it, either broken or the insulation has broken causing a short. When the coolant sensor malfunctions it can send a signal to engine control unit (ECU) that the coolant, and therefore the engine, is cold. The ECU responds by injecting more fuel to compensate for a 'cold' engine and this causes the engine to race. Fix the coolant sensor/wiring and the engine racing will also be cured.
The charging voltage from the alternator is too high in my experience. It should be only be about 14.5 volts even when the battery is low. Most alternators have an integrated brushes and electronic module that can be unbolted and exchanged for a new one. Failing that, an alternator can be bought at a reasonable price on exchange for your old one. Some damage to other electrical systems my result of high voltage supply, my car actually has an over voltage protection relay and fuse to protect the ABS braking system and other circuits. A friendly consultation with an auto electrician now might save money on other things in future
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