Question about 1990 Dodge Dynasty

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Check engine light code 23

What is code 23

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Type: OBD 1 & your code-- add your veh if nec

Posted on May 16, 2014

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Posted on Jan 02, 2017

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No gas getting to the carburator


This carburetor is a Throttle body injection system the injectors requires pulses to control fuel spray. With starting fluid spray some down each side crank engine if it starts runs then dies then check the following #1 fuel pressure #2 check for engine codes cycle ignition key on & off three time (off,on,off,on,off,on) watch the crank engine light flash first set is ten code pause second set single code so a flash flash pause flash flash flash pause repeat would be code 23 repeat 23 then the next one with a end of message code of 55 with the code you can find the computer part that is failing.

Apr 17, 2014 | 1995 Dodge Dakota

1 Answer

Service engine light is on


Need to check what the engine codes are first. You can use a scan tool or turn the key on and off three times in a row then leaving the key on the third time and the check engine light should flash. Count the flashes,(example: flashes two times and then three times thats code 23) or have a parts store scan it for free. Once you have a code it will put you in a direction on what system needs to be looked at.

Nov 07, 2013 | 1984 Dodge D150

1 Answer

Check engine light stays on


On 1993 model turn the switch to on but no crank to start turn off turn on turn off turn on and let on that position, when all lights turn off the check engine light will star flashing for ej: two flash a quick pause and three flashes will be code 23 after a longer pause will star other code , code 55 is end of codes. after you have the codes can search with it,

Jul 28, 2012 | 1993 Jeep Grand Cherokee

1 Answer

Automatic shut down relay is shutting down!


Relay controls choke try this
Checking your ECU for codes yourself (OBD I)
  • Start with the ignition off. Within five seconds, switch the key on, off, on, off, on. (On is *not* start!)
  • The "check engine" light will flash. Count the flashes Each code is a two digit code, so a (for example) 23 would be FLASH FLASH (pause) FLASH FLASH FLASH (loong pause)
  • It will never flash more than 9 times, watch for pauses!
  • 55 is end of codes - it's normal. Before you call your dealer or mechanic, consider that the blink-spacing is not always perfectly uniform, so if you see 23 23, it's probably just a single 55. (Codes are not repeated.)
  • 33 is normal on earlier models if you don't have air conditioning.
    • John McGuire wrote: "The older Vipers will blink out diag codes with four off/on key turns. They removed the capability starting in... I think 2000, at any rate I know my 2001 requires a computer to check the codes."
  • On some models (such as a 1995 Neon), when the check engine light goes on, you may be able to get the codes simply by putting in the key and moving it to the RUN position; the light will blink out the codes by itself.
  • Please note that some codes are NOT included below, this is not a complete listing, but it IS very close to complete. It stemps from a list posted on the Mopar Mailing List, but many modifications have been made.
  • * Activates Power Limited/Check Engine light on some models.

Sep 17, 2011 | 1994 Jeep Wrangler

2 Answers

Where is the diagnostic plug exactly located in my mercury sable 1992?


Under hood, driver side, front side of strut tower, mounted to fenderwell

Note, this is an OBD1 connector. You will need an OBD1 scanner to read codes.

Alternate methods to extract trouble codes:


USING THE ANALOG VOLTMETER See Figures 3 and 4
Service codes will be represented by pulsing or sweeping movements of the voltmeter's needle across the dial face of the voltmeter. Therefore, a single digit number of 3 will be reported by 3 needle sweeps. However, a service code is represented by a 2-digit or 3-digit number, such as 23. As a result, the Self-Test service code of 23 will appear on the voltmeter as 2 needle sweeps, then after a 2 second pause, the needle will sweep 3 times.
Connect the analog voltmeter as follows:

  1. Turn the ignition OFF .
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Fig. Fig. 3: Voltmeter hook-up


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Fig. Fig. 4: Analog voltmeter output code format

  1. Set the voltmeter on a DC voltage range to read from 0-20 volts.
  2. On all EEC-IV vehicles, connect the voltmeter from the battery positive post to the Self-Test Output (STO) pin of the large Self-Test connector. On all other vehicles, connect the positive voltmeter lead to the EEC STO line and the negative lead to engine ground, then jumper the EEC Self-Test Input (STI) to ground.


USING THE MALFUNCTION INDICATOR LIGHT (MIL) During the Self-Test,a service code is reported by the malfunction indicator light. It will represent itself as a flash on the CHECK ENGINE or SERVICE ENGINE SOON light on the dash panel. A single digit number of 3 will be reported by 3 flashes. However, a service code is represented by a 2-digit or 3-digit number, such as 23. As a result, the Self-Test service code of 23 will appear on the MIL light as 2 flashes, then, after a 2 second pause, the light will flash 3 times.

Mar 10, 2011 | 1992 Mercury Sable

1 Answer

1989 ford ltd check engine light on obd 1 code 23 and 67


Start with replacing the TPS. The two aren't related.

May 20, 2009 | 1989 Ford LTD

1 Answer

Check engine light on code 171and 174


Sounds like a dirty Mass Air Flow sensor.

Mar 26, 2009 | 1997 Lincoln Town Car

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