20 Most Recent 1992 Oldsmobile 88 - Page 6 Questions & Answers

front of engine facing radiator.

it depends. just measure it, you have it in front of you.

think its too old to have one

recommend you check your MAP sensor. You will need a voltmeter.
If you don't have a vacuum gage, just use your mouth to pull a vacuum on the hose and see if the voltage drops when you do.
Let me know if you have questions.

OPERATION The Manifold Absolute Pressure (MAP) sensor, used on 1996-99 vehicles, measures the changes in intake manifold pressure which result from engine load/speed changes, and converts this information to a voltage output. The MAP sensor reading is the opposite of a vacuum gauge reading: when manifold pressure is high, MAP sensor value is high and vacuum is low. A MAP sensor will produce a low output on engine coast-down with a closed throttle while a wide open throttle will produce a high output. The high output is produced because the pressure inside the manifold is the same as outside the manifold, so 100 percent of the outside air pressure is measured.
The MAP sensor is also used to measure barometric pressure under certain conditions, which allows the PCM to automatically adjust for different altitudes.
The MAP sensor changes the 5 volt signal supplied by the PCM, which reads the change and uses the information to control fuel delivery and ignition timing.

TESTING See Figures 1 and 2

1. Visually check the connector, making sure it is properly connected and that all of its terminals are straight, tight and free of corrosion.
2. With the ignition ON , check the voltage between terminals A and B (probe the back of the connector to connect to these wires). It should be above 4 volts. Apply 15 in. Hg of vacuum at the MAP vacuum port and check the voltage again. The voltage should be 2 volts now.

Fig. Fig. 1: Manifold Absolute Pressure (MAP) sensor circuit
When pumping up and releasing the vacuum, check to make sure the voltage readings are smooth. When applying vacuum to the sensor, the change in voltage should happen instantly. A slow change in voltage could point to a faulty sensor.

Fig. Fig. 2: MAP sensor voltage specifications

1. If the sensor voltage is not within specification, check for a 5 volt reference at terminal C. If the reference signal is found, the sensor is faulty.
2. If the sensor and circuits are functional, the PCM may be faulty.

REMOVAL & INSTALLATION

3.8L (VIN K) Engine
See Figure 4
On these engines, the MAP sensor is mounted to the PCV valve cover.

1. Disconnect the negative battery cable.
2. Detach the MAP sensor electrical connector.
3. Carefully bend the locking tabs holding the MAP sensor to the PCV valve cover, just enough to remove the MAP sensor.
4. Pull the MAP sensor straight out of the PCV valve cover.

Fig. Fig. 4: On the 3.8L (VIN K) engine, the MAP sensor (1) is mounted in the PCV valve cover (2)

To install:

1. Make sure that the seal is installed on the MAP sensor and that it is not damaged.
2. Position and install the MAP sensor to the PCV valve cover. Make sure the locking tabs engage to hold the sensor to the cover.
3. Attach the sensor electrical connector.
4. Connect the negative battery cable.

5 US quarts with a filter

chek fuel pressure regulatorand fire modul

STARTER problem did you try hammering your starter just to free up the armature? try it, let somebody start ur ignition while u hammer down the starter! If that don't work, you have to bring it to ur mechanic, there might be some problem in the ARMATURE BRUSH and the SOLENOiD!
Taaah!

you don't have to bleed the brakes if your just replacing pads,only time you have to bleed them is if you open system.











TIM.....

The alternator needs to be replaced because the car ignition system is running on your battery and the alternator is not charing it or supply dc power to run the car. If the battery is that dead you might have to replace the battery too but try the alternater first

Have you tried changing the fuel filter and also try putting some injector cleaner in the fuel

the temperature sensor for the auto choke could be playing up so its staying on choke ,or the idle control valve ,

Locate the old link, it is one bolt that holds isolators and washers around the stabalizer bar to keep it from moving up and down, and eliminates body torsional twisting.

Remove the old link-you may have to cut it off if it is rotted, and replace it as the old one was, there is one stabilizer link on each side of the stabilizer bar so if one is broke, look at the other side to see how the isolators and washers go.

Always replace both of these , never just replace one. Good practice and not expensive. (They may come in pairs, depending on where you buy them.)

Pretty simple once you attack it.

it will be on the side of the motor where the transmission joins onto the motor. right or left side of the engine

Disconnect the positive termanl on the battery for about 3 min. reconect the battery the computer should be reset. Drive the car for about 30 min. if it takes that long to get to the inspection station then drive there and it should pass as long as the light hasn't come on prior to arriving at inspection station.if so see how long it takes for light to come on go about that far away from inspection station disconnect battery and try again.

you need a code book or go to parts store and ask them ,they normally have books to help you

THERE IS A REASON, NO WHERE DO U MENTION IF U HAVE ANY SYSTEM FUALT CODES, SEE DIAGRAM ON HOW TO TEST FOR CODES USING THE UNDER DASH CONNECTOR IN FRONT OF STEERING WHEEL

the number on most common cause of this problem is a failing crankshaft position sensor (kn, it is located on the front of the engine and picks up its signal from the crank shaft harmonic dampener.

Is the engine light on?

Is the engine on? Check coil ?