If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
The D4 light
Hello,
A few years ago I had several transmission problems with my 90 Accord in this post. http://www.automotivehelper.com/topic999769.htm I just realized I never came back and told everyone how I fixed it. 1. The transmission computer (TCM) was suffering from bad capacitors. I replaced two burned resistors and five electrolytic capacitors, cleaned all electrolyte from the PCB and repaired a couple of traces. There is now no "S" light, nor starting off in 2nd. 2. There were bad grounds, at some points there was 12 ohms between ground points in the car. I sanded and replaced the screws on: the ECM ground at the thermostat, the valve cover to PS pump to frame ground, and the 2 ground strap points from the battery cable. There is now tenths of an ohm between the same points as before. 3. The D4 LED was bad. I got a new one from Honda, pulled the dash cluster and replaced it. Figures, since it's the LED that is on all the time. So "being flakey" is actually a failure mode of the LED and doesn't necessarily indicate computer trouble. 4. The transmission throttle linkage cable was not correctly installed. This was causing the flaring on upshifts, probably because the appropriate fluid pressure was not being applied to the clutches for the high RPM. So as of now there is no more D4 blinking, no more "S" light, no more funny behavior, and tight shifts. Thanks for all your help 3 years ago. I just had a veritable army of gremlins inside that thing! |
Ads |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
2001 Honda Accord - no parking lights or dashboard background light + SRS Light on | [email protected] | Honda | 0 | October 12th 06 03:42 AM |
1995 Isuzu Rodeo Driver Side Brake Light Won't Light When Pressed | Brian[_3_] | Technology | 11 | July 28th 06 02:59 AM |
2001 Civic battery light - charging system indicator light wont go off. | Conradical | Honda | 2 | February 13th 06 06:26 PM |