Question about 1985 Oldsmobile Ninety Eight

1 Answer

Self-diagnosis System I am trying to use the check engine light to get my trouble codes but I dont know the on/off pattern for the ignition key to get it to start displaying the codes. Can you help? Its for a 1985 olds 98

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 432 Answers

Autozone Chilton manual or they do this for free

Posted on Oct 03, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Where is the obd2 connector location on holden ra rodeo v6


isuzimpuls.gif
Connect white (test lead) and black (ground lead) wires that are branched from harness approximately eight inches from ECM. After leads are grounded, the "Check Engine" light will flash the diagnostic trouble codes. The DTC's are indicated by the flashing CEL.
FLASH, FLASH, pause, FLASH, FLASH, FLASH = Code 23.
If only one diagnostic trouble code is stored, the DTC will repeat continuously until test leads are disconnected. If more than one diagnostic trouble code is stored, each DTC will repeat three times, starting with the lowest, then proceed to the next DTC. After all DTC's have been displayed, the pattern will repeat.I-MARK 84-85
Connect male and female test leads taped into wire harness near ECM. After leads are connected, the "Check Engine" lamp will flash the trouble codes. The DTC's are indicated by the flashing CEL.
FLASH, FLASH, pause, FLASH, FLASH, FLASH = Code 23.
If only one diagnostic trouble code is stored, the DTC will repeat continuously until test leads are disconnected. If more than one diagnostic trouble code is stored, each DTC will repeat three times, starting with the lowest, then proceed to the next DTC. After all DTC's have been displayed, the pattern will repeat.
86-87 Impulse located near the ECM connector, is used to actuate the Engine Control Module (ECM) trouble code memory within the module. Two terminals (A and C) of this connector are used to activate the diagnostic trouble code system in the ECM. With the ignition switch turned On, engine Off, connect a jumper wire between terminals A and C. The "Check Engine" lamp will begin by flashing a DTC 12. DTC 12 = flash, pause, flash, flash. There will be a longer pause and a code 12 will repeat two more times. This code indicates the self-diagnostic system is operating. The cycle will then repeat until the engine is started or the ignition is switched Off. In most cases, DTC's will be checked with the engine running since no DTC's other than DTC 12 or 51 will be present without the engine running. Remove jumper wire from ALDL connector before starting engine. Reconnect jumper wire after engine is running.

Throttle Body Fuel Injection

The ECM test connection is located under the center console.
A built-in, self diagnostic system will identify problems in the throttle body fuel injection system. When a problem is detected, the diagnostic system will illuminate the "Check Engine" light.
When the engine is started, the Check Engine light should turn off.. If the light remains lit, the self diagnostic has detected a problem. To determine where the problem exists, ground the "Test" terminal of the connector with the ignition On, engine Off and watch the check engine light. Each DTC will flash three times (lowest to highest).

Aug 21, 2014 | Holden Rodeo Cars & Trucks

1 Answer

How to reset limp in mode when there is no trouble codes and no check engine light 1990 dodge dakoda 3.9 L


Try putting the ignition key to on position then disconnect the negative he key still on reconnect the battery, this may re-boot the system....Good-luck....

Jan 04, 2013 | Dodge Dakota Cars & Trucks

2 Answers

Where is the obd connector on a 1991 mitsubishi 3000gt


The Data link connector is located on the side of the fuse block which sits above your left foot as you are sitting in the car, the fuse block has a black plastic cover, and the connector on the side and has a soft rubber boot.

Jan 29, 2012 | 1992 Mitsubishi 3000GT

1 Answer

What to do about check engine light? It started to come on today.


well what is the code number for the check engine light?? need to know that first to get started with diagnosis. having a 2000 maxima my self that has 225000 miles on it and it runs like a swiss watch i have seen o2 sensors fail, air flow meters fail, cats fail, ignition coils fail, front exhaust tube failures which is actually a cat also. scan vehicle and get code/s out and post findings. if you dont have a hand held generic scanner that goes for about 70 bucks at autoparts store or even sears sells them, then you can go to your local autoparts store and ask them if they can scan it for you for free. some stores will do that for you. they will only hook it up and give you the codes stored. that is it. then you have to start with diagnosis. get the code number and post findings to start diagnosis.

Nov 02, 2011 | 2000 Nissan Maxima

1 Answer

ABS light comes on... but no noticble degradation in operation etc.


Most likely a wheel speed sensor, hopefully... The only thing that will change when the ABS light is on is that the ABS will not function as long as the indicator is on. I hope this info helps.

When the airbag system is in functioning condition, the airbag warning light will remain on for about 7 seconds and go out when the ignition switch is set to ON .

If there is any malfunction, the airbag warning light will either stay on or off continuously. In such cases, perform on-board diagnostic in accordance with the specified procedure to determine trouble codes.


  1. Turn ignition switch ON (with engine OFF ).
85091723



  1. Connect DIAG. terminal to No.2 terminal of diagnosis connector located inside lower cover.
  2. Check in accordance with the trouble code indicated by the AIRBAG warning light, and record the trouble codes.
  3. Turn the ignition switch "OFF " and remove the DIAG. terminal from No.2 terminal of diagnosis connector.
85091724


HOW TO READ TROUBLE CODES
The ABS lamp flashes a code corresponding to the faulty parts.

The long segment (1.2 secs on) indicates a "ten", and the short segment (0.3 secs on) indicates a "one".





NOTE: This is the only information provided by the manufacturer for clearing diagnostic trouble codes.

97511505


CLEAR MEMORY
After eliminating problem as per trouble code, clear memory as follows:

Make sure ignition switch is ON (and engine off). Connect one DIAG. terminal (1) on diagnosis connector (2) terminal No.1.

where warning light is flashing, connect the other DIAG. terminal (3) on terminal No. 2 for at least three seconds . After memory is cleared, normal warning light flashing rate resumes. (Warning light flashes every 0.6 seconds (ON-OFF operation.) Memory cannot be cleared if any problem exists.

After clear memory and then DIAG. terminals (1) and (3), extract from diagnosis connector (2)

Jul 27, 2011 | 1999 Subaru Legacy

1 Answer

We just picked up a 1985 Cadillac Deville with 42,000 original miles. The car had not been driven in 4 years. It was given a tune up, all liquids were changed. When we changed the gas filter there was...


Yes, water could be in the gasoline. Try to run a few tanks of gas through it to clear up that problem.

Are there any engine codes on this car that are readable? Maybe a throttle position sensor is not giving good data to the computer.

BASIC TROUBLESHOOTING
  1. NOTE: The following explains how to activate the Trouble Code signal light in the instrument cluster. Before suspecting the C-4 or CCC system, or any of its components as being faulty, check the ignition system (distributor, timing, spark plugs and wires). Check the engine compression, the air cleaner and any of the emission control components that are not controlled by the ECM. Also check the intake manifold, the vacuum hoses and hose connectors for any leaks. Check the carburetor mounting bolts for tightness. NOTE: For information regarding computer control/troubleshooting of the Electronic and Digital fuel injected vehicles, please refer to Section 5 of this manual. The following symptoms could indicate a possible problem area with the C-4 or CCC systems:
    1. Detonation
    2. Stalling or rough idling when the engine is cold
    3. Stalling or rough idling when the engine is hot
    4. Missing
    5. Hesitation
    6. Surging
    7. Poor gasoline mileage
    8. Sluggish or spongy performance
    9. Hard starting when engine is cold
    10. Hard starting when the engine is hot
    11. Objectionable exhaust odors
    12. Engine cuts out
    13. Improper idle speed (CCC only). As a bulb and system check, the Check Engine light will come on when the ignition switch is turned to the ON position but the engine is not started. The Check Engine light will also produce the trouble code/codes by a series of flashes which translate as follows: When the diagnostic test lead (C-4) or terminal (CCC) under the instrument panel is grounded, with the ignition in the ON position and the engine not running, the Check Engine light will flash once, pause, and then flash twice in rapid succession. This is a Code 12, which indicates that the diagnostic system is working. After a long pause, the Code 12 will repeat itself two more times. This whole cycle will then repeat itself until the engine is started or the ignition switch is turned OFF. When the engine is started, the Check Engine light will remain on for a few seconds and then turn off. If the Check Engine light remains on, the self-diagnostic system has detected a problem. If the test lead (C-4) or test terminal (CCC) is then grounded, the trouble code will flash (3) three times. If more than one problem is found to be in existence, each trouble code will flash (3) three times and then change to the next one. Trouble codes will flash in numerical order (lowest code number to highest). The trouble code series will repeat themselves for as long as the test leads or terminal remains grounded. A trouble code indicates a problem with a given circuit. For example, trouble code 14 indicates a problem in the cooling sensor circuit. This includes the coolant sensor, its electrical harness and the Electronic Control Module (ECM). Since the self-diagnostic system cannot diagnose every possible fault in the system, the absence of a trouble code does not necessarily mean that the system is trouble-free. To determine whether or not a problem with the system exists that does not activate a trouble code, a system performance check must be made. This job should be left to a qualified service technician. In the case of an intermittent fault in the system, the Check Engine light will go out when the fault goes away, but the trouble code will remain in the memory of the ECM. Therefore, if a trouble code can be obtained even though the Check Engine light is not on, it must still be evaluated. It must be determined if the fault is intermittent or if the engine must be operating under certain conditions (acceleration, deceleration, etc.) before the Check Engine light will come on. In some cases, certain trouble codes will not be recorded in the ECM until the engine has been operated at part throttle for at least 5-18 minutes. On the C-4 system, the ECM erases all trouble codes every time that the ignition is turned off. In the case of intermittent faults, a long term memory is desirable. This can be produced by connecting the orange connector/lead from terminal S of the ECM directly to the battery (or a hot fuse panel terminal). This terminal must always be disconnected immediately after diagnosis as it puts an undue strain on the battery. On the CCC system, a trouble code will be stored until the terminal R at the ECM has been disconnected from the battery for at least 10 seconds. Fig. 1: C-4 system diagnostic test lead location - above ECM 85874039.gif Fig. 2: Under dash test terminal location 85874040.gif
      Fig. 3: CCC system diagnostic test terminal located underneath the left side of the instrument panel 85874041.gif prev.gif next.gif

Nov 06, 2010 | 1985 Cadillac DeVille

1 Answer

No Check Engine Light working


check to make sure the ecm fuse is not blown,also check pin 16 on the plug where you plug in the scanner should be last pin on bottom row make sure this pin has power when the key is in the on position,hope this helps let me know

Mar 23, 2009 | 1998 Cadillac Catera

2 Answers

A/C won't work 03 Acura RSX


General Troubleshooting Information
How to Retrieve a DTC

The Climate Control Unit has a self-diagnosis function. To run the self-diagnosis function, do the following:
1. Turn the ignition switch OFF.
2. Tu rn the fan switch OFF, the temperature control dial to MaxCool (60.F or 18.C), and the mode control dial to Vent.
3, Turn the ignition switch ON (ll),then press and hold the recirculation control switch. Within lO seconds while holding the switch down, press the rear window defogger switch five times. The recirculation indicator blinks two times and the A/C indicator comes on, then the self-diagnosis will begin. About 15 seconds later, the self diagnosis will finish and the Ay'C indicator goes off. lf there is any problem in the system after finished self diagnosis, the recirculation indicator will blink the Diagnostic Trouble Code (DTC) 1 through 13. When problems in the evaporator temperature sensor circuit are detected (codes 14 and t5), the A/C indicator will blink the DTC. lf no DTCs are found. the indicator will not blink.
d35f123.jpg 695f305.jpg5d11822.jpg Resetting the Self-diagnosis Function
Turn the ignition switch OFF to cancel the self-diagnosis function. After completing repair work, run the self-diagnosis function again to make sure that there are no other malfunctions.
eb2936e.jpg 45cedbd.jpg

Jan 13, 2009 | 2006 Acura RSX

2 Answers

Hi... i'm new to the foreign car market...


1st check the #4 fuse (10A) and #10 fuse (7.5A) on the 'under-dash' fuse block.
then #9 fuse (10A) on the 'engine bay' fuse block.

if the fuses are good, the gauge assembly has has "self-diagnostic" feature.

Self-diagnostic Procedure

The gauge assembly has a self-diagnosis function.
. The beeper drive circuit check
. The indicator drive circuit check
. The LCD segments check
. The gauges drive circuit check (speedometer, tachometer, fuel gauge, coolant temperature gauge)
. The communication line check (the coolant temperature signal line between the gauge and ECM/PCM)


Entering the Self-diagnosis Function:
1. Push and hold the trip/reset button.
2. Turn the lighting switch ON.
3. Turn the ignition switch ON (ll).
4. Within 5 sec., turn the lighting switch OFF, then ON and OFF again.
5. Within 5 sec., release the trip/reset button, then push and release the button four times repeatedly.

NOTE:
. While in the self-diagnosis mode, the dash lights brightness controller operates normally.
. While in the self-diagnosis mode, the trip/reset button is used to start the beeper drive circuit test and the gauge drive circuit check.
. lf the vehicle speed exceeds 1.2 mph (2 km/h) or the ignition switch is turned OFF, the self-diagnosis mode ends.

The Beeper Drive Circuit Check:
When entering the self-diagnosis mode, the beeper sounds five times.

The Indicator Drive Circuit Check:
When entering the self-diagnosis mode. the indicators lights (such as: Seat belt indicator light, Door/hatch indicator light, Brake system light. Charging system light, Low fuel indicator light, maintenance required light) blink.

The LCD Segment Check:
When entering the self-diagnosis mode, the odo/trip segment blinks five times.

The Gauge Drive Circuit Check:
When entering the self-diagnosis mode, the speedometer, the tachometer, the fuel gauge, and the coolant
temperature gauge needles go from the minimum position to maximum position, then return to the minimum position.
NOTE:
After the beeper stops sounding and the gauge needles return to the minimum position, pushing the trip/reset button, starts the beeper drive circuit check {one beep), and the gauge drive circuit check again.
The check cannot be started until the gauge needles return to the minimum position.

The Communication Line Gheck:
In the seif-diagnosis mode, after the odo/trip LCD segments check, the self-diagnosis starts the communication line check.
lf all segments comes on, the communication line is OK.
lf the word" Error" is indicated, there is a malfunction in the communication line between the gauge assembly, the multiplex control unit, and the ECM/PCM,
f4a412b.jpgc169609.jpg
Ending the Self-diagnosis Function:
Turn the ignition switch OFF.

Note: lf the vehicle speed exceeds 1 .2 mph (2 km/h), the self-diagnosis function ends.
-----------------------

If everything works correctly during the check, check your VSS (vehicle speed sensor)



Aug 03, 2008 | 2004 Honda Accord

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

80 people viewed this question

Ask a Question

Usually answered in minutes!

Top Oldsmobile Experts

yadayada
yadayada

Level 3 Expert

75807 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22133 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8172 Answers

Are you an Oldsmobile Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...