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Hi there;I suggest scanned the computer car in order to know additional fault codes. Check other details HERE.
The Check Engine light may come on, indicating a system problem when, in fact, there is a poor or intermittent electrical connection. First, check the electrical connections, clean or repair connections if necessary.
The Check Engine light and D4 light may light simultaneously when the self-diagnosis indicator blinks.
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The D4 light is coming on to tell you that there is one or more fault codes set in your transmission control module. The only way to retrieve codes on the 1995 models is to read "Flash Codes" output by the D4 light. (See instructions below)
RETRIEVING FLASH CODES USING THE D4 LIGHT
If fault codes are present, the D4 light will "blink" when the ignition is turned to the RUN position and will remain on at all times when the engine is running.
To retrieve the flash codes, turn the ignition switch off.
Install a jumper wire between the service check connector terminals.
The service check connector is a gray, 2-pin connector located on the PCM/TCM cover under the passenger side of the instrument panel. (See picture below)
CAUTION: DO NOT use the 3-pin located next to the service check connector.
Installing the jumper will place the PCM/TCM in diagnostic test mode.
Turn the ignition to the RUN position. Codes will be output by blinking the D4 light.
Note the number of blinks from the D4 light. A short blink indicates a single digit flash code. A long blink equals 10 short blinks. For instance one short blink indicates code 1. One long blink and four short blinks indicates code 14. If there is more than one fault code, they will be output one at a time from the lowest numbered code to the highest numbered code. It is recommended that you read the code or codes several times to make sure that you are reading it correctly.
Once you have retrieved the fault code(s) re-post your question and include the information for what codes you have and someone can then help you locate the cause of the problem.
There are many other things that cause the D4 to flash. The D4 light turning off is similar to the CEL turning on. Some codes
cause the light to blink, some turn it off. There's an error code
stored, pull it and start from there.
Definitely pull all the codes and let us know what you find. Once we
know what the codes are then we can help you troubleshoot the issue/s. Alot owners talk about VSS (Vehicle Speed Sensor) but the VSS may or may not be part of the issue but per your description it
may sound like a main relay to a tranny issue.
This is an internal transmission failure the check engine light along with the D4 light flashing and the slipping is telling you this. What happens is the clutches internal in the transmission fail and no longer hold pressure and cause the transmission to fail triggering the check engine and D4 light.
When the shift lever is in Park, is the D4 light on, or blinking? If the D4 light is on steady, while the shift lever is in Park, chances are your transmission computer has taken a dump on you. If the D4 light is blinking while the shift lever is in Park, the computer has stored a code, that will give you some idea where to look for the problem. Here is a link describing how to retrieve the codes. Good luck. http://home.earthlink.net/~michaelpkeefe/HowTo_Codes.htm
You have to bleed all the air out of the radiator by letting the engine run until it gets hot, as it does this you will see lots of air coming out of the radiator, almost gurgling, keep the radiator coolant filled as it does this until all the air is out and it stops gurgling. It should be fine then and not overheat unless something else is wrong.
Hi, a few questions 1st. Did your mechanic check for engine codes? Is your Honda a v-6 or 4 cylinder? The flashing D4 light indicates a possible transmission malfunction. You should avoid rapid acceleration until the cause of the light blinking is determined. If you have the V-6, there is a diagnostic port to connect a scan tool to read any stored engine codes that have turned on the check engine light. This port is located behind the ashtray in the center console (most cars did not have this til 96). If you have the 4 cyl engine, there is a service connector located under the dash on the pass. side. Inside the connector is what looks like a 2 wire plug should be attached. Take a paper clip, unbend it, and insert the 2 ends of the clip into the connector to 'jump' it. Turn the ignition switch to the on position (don't start the vehicle), and the check engine light will flash. Count the flashes, short flashes are for code #'s 1 to 9 (single digit code), a 2 digit code will be a long flash for the 1st digit, followed by a short flash for the 2nd digit. If there is more than one code, they will be separated by a pause. They will repeat so you can count them and write them down. Let me know what the code #'s are so I can help further. Curt
Chris, I believe u have 2 problems. The flashing D4 light indicates a transmission problem, which Honda recommends having checked out right away. It wouldn't hurt to change the fluid, there is no filter on the 92 accord. I suspect the problem is more than changing the fluid though. The other problem is only starting in Neutral. This may be a faulty neutral safety switch. It's located at the base of the shift selector, and covered by the console. Let me know if u need directions on how to remove/install it. Good luck.
d4 is flashing as a trouble code for the automatic transmission... i would say without research that it is a code for a transmission solenoid. maybe while washing the car some water got in and caused a short...these solenoids are usually weatherproof....you could try disconnscting the battery for 30 secs..to clear the trouble code and then start the car. remember you may lose your preset info!