Top 20 1992 Oldsmobile 88 - Page 4 Questions & Answers


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Check for the ignition coil and the distributor (If a Distributor based Current Discharge System is installed or a CDI).. It seems like it is not properly working and causing "no Spark" condition...
Concerned.

1992 Oldsmobile... | 86 views | 0 helpful votes


I HAD A OLDS ACHIEVA AND IT WAS BETWEEN THE DOOR AND DRIVER SEAT ON FLOOR AREA . CHECK THERE OTHERWISE SORRY I COULDN'T HELP. GOOD LUCK !

1992 Oldsmobile... | 350 views | 0 helpful votes


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.


jturcotte_326.gif

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.


jturcotte_327.gif

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.
jturcotte_328.gif

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.

1992 Oldsmobile... | 1,113 views | 2 helpful votes


It's likely that the pulleys are not all in alignment, and may have to replace the tensioner or other pulley device that is out of alignment (not in the plane of where the belt should be). Check that all bolts are in place.

1992 Oldsmobile... | 89 views | 0 helpful votes


If the block and radiator has been completely drained, it will hold slightly less than 2 1/2 gallons. If you are refilling from a something like simple water pump relacement you will need about 1 1/2 gallons.

1992 Oldsmobile... | 128 views | 1 helpful votes


check for bad coil packs

1992 Oldsmobile... | 113 views | 1 helpful votes


THe cam sensor tells the computer what position the camshaft is in .The cam sensor is located on the front of the timing cover midway up the front of the engine. be careful and check that the magnet did not fall out of the cam gear

1992 Oldsmobile... | 112 views | 0 helpful votes


front of engine facing radiator.

1992 Oldsmobile... | 90 views | 1 helpful votes


5 US quarts with a filter

1992 Oldsmobile... | 205 views | 0 helpful votes


think its too old to have one

1992 Oldsmobile... | 98 views | 0 helpful votes


chek fuel pressure regulatorand fire modul

1992 Oldsmobile... | 170 views | 0 helpful votes


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.....

1992 Oldsmobile... | 234 views | 0 helpful votes


Remove battery cables for 10-15 min and reattach that should clear it

1992 Oldsmobile... | 24 views | 0 helpful votes


Is the engine light/service engine soon light on?

1992 Oldsmobile... | 567 views | 5 helpful votes


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

1992 Oldsmobile... | 224 views | 0 helpful votes


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

1992 Oldsmobile... | 349 views | 1 helpful votes


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

35d7136.jpg

1992 Oldsmobile... | 338 views | 0 helpful votes


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.

1992 Oldsmobile... | 228 views | 0 helpful votes


Is the engine light on?

1992 Oldsmobile... | 296 views | 0 helpful votes


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

1992 Oldsmobile... | 163 views | 1 helpful votes

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