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Honda Accord (1990-1993) Maintenance and Repair

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  • corkscrewcorkscrew Posts: 254
    edited June 2010
  • klov46klov46 Posts: 3
    I have a problem with my 93 accord. When i start it it says that its in park and drive at the same time. i shift it to drive and the parking goes away. why does it say park and drive when i start it??
  • elroy5elroy5 Posts: 3,741
    If the D4 light stays on constantly, even when the shift lever is in Park, you probably have a transmission computer problem (very common on 4th gen Accords). To be sure, you can open it up, and look for dark spots on the circuit board (the capacitors have leaked on it). It can be fixed by someone who knows how, but you might have to find a replacement. Good luck finding one that's still good, and doesn't cost an arm and a leg.
  • klov46klov46 Posts: 3
    Where would be the best place to repair the TCM??
  • Hi, My 91 Accord wagon, with automatic transmission, does not shift into 4th gear. I had a friend look at it and was not sure it was happening until I got on the highway going at 50-60 mph and shifted it back to D3. Nothing happened so I realized that it was only shifting into 3rd and not 4th at all. Is this common? Is this a TCM problem or indicative of the tranny going out? Can a computer be plugged into this model to see if that would indicate the problem?

    Thanks
  • elroy5elroy5 Posts: 3,741
    edited July 2010
    Your 91 Accord is not OBDII, so it will not hook up to a scanner. It will, however blink a code, using the D4 light in the dash. Is your D4 light blinking, or lit even when the shift lever is in Park? If the D4 light is on or blinking, there should be a code stored in the computer. It will at least give you a place to start checking. Here is a link, that may help you retrieve the code, and maybe even find where the problem is. Have you checked the fluid? Good luck ...................Link below

    http://www.techautorepairs.com/transmission.html#troubleshooting
  • 94shadow94shadow Posts: 31
    Hi,
    Is their are difference with oxygen sensors? If their is, what is the difference.
    I have a 92 accord 2.2L, FI, headers, downpipes, aftermarket catalytic converter, aftermarket resonator and a flowmaster muffler. When driving for 20 minutes, the CEL comes on and stays on. When I turn my engine off and restart it in about 15 minutes, the CEL stays off, then when I go for about 20 minutes, the light comes back on.
    The car runs good with or without CEL so I was wondering if there were any differences with the 02 sensors. I just have to find out what is wrong, if anything is wrong.
    I hope this makes sense.
    Thanks,
    94shadow

    By the way how many 02 sensors does a 92 accord have.
  • keyon19keyon19 Posts: 11
    I have a 1993 honda accord ex with 221000 miles on it, runs great but the only problem im having with it is a noise from the engine. When i start to drive down the highway before it shift to 2nd i will hear a rattling or knocking noise at high rpm, I dont know what it is but someone told me it could be valve springs but if I just sit in park and rev the engine it sounds like an knock around 2500 to 3000 rpm other than that its a great cat oil very clean and at proper level I dont know what to look for can someone PLEASE HELP!!!
  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 45,930
    When's the last time you had the valves adjusted?

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  • keyon19keyon19 Posts: 11
    I don't know I just got the car.
  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 45,930
    You might run this noise by a mechanic and if it is valve lifter noise, by all means get the valves adjusted.

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  • johnson18johnson18 Posts: 1
    i have a 93 accord se that has the light on over the d4 and i have a 90 accord ex that is wrecked will the tcm work out of it in the 93?
  • elroy5elroy5 Posts: 3,741
    The 90 Accord has the "Sport shift", and the 93 doesn't. That's the only difference I know of. The plugs (on the computer) may be the same, maybe not. I would guess the computer would work, but that's only a guess, sorry.
  • gojacketsgojackets Posts: 23
    edited August 2010
    I don't think a 90 TCM can be interchanges with a 93 TCM. You really need to have the same part number to be somewhat sure. The 93 is similar to the 92, but quite a bit different from the 90/91 cars. "Some" of the correct part numbers are:

    The LX had a 125hp engine (F22A1) and the EX had a 140hp engine (F22A4)

    The factory TCU's on these cars were:
    93LX - 28100-PX4-722
    93EX - 28100-PX4-732

    92LX - 28100-PX4-722 (same as 93LX)
    92EX - 28100-PX4-731 (Oki) or 27100-PX4-732 (same as 93EX)

    91LX - 28100-PX0-823 (for whatever reason, this TCU costs twice the price of all the others's from the dealer!)
    91EX - 28100-PXO-833
  • cybercoolcybercool Posts: 117
    My TCM is shot as well. I was told that 93 Hondas has lots of TCM issues. I found used ones online for under $200. How can I be assured it wont go bad again? I want my Honda to shift into gears normally. Please help, Thanks
  • The TCM issue with these cars (91-93) is that the TCM's (and the cars) are old but many are still on the road. The TCM has 5 capacitors inside it and these will leak and fail. If you take the cover off your TCM, look and see if there's dark colored goo or burned resistors on the circuit board - if there is, then you have the "usual" problem.

    Before I bought another old one for $200, I would find out if it's been "recapped". If it hasn't, then it could fail tomorrow. A better option (in my opinion) would be to take the TCM out of your car and send it to one of the companies that will install new capacitors and resistors. You "could" recap one yourself, but that's not the easiest thing to do and the soldering can be a pain.

    For a used, non-recapped, TCM I wouldn't pay more than $50 since it's a total gamble
    Getting yours recapped should cost around $150
    A new one from Honda (not worth the expense) is $600-$900 depending on the model.
  • elroy5elroy5 Posts: 3,741
    Yes, the computers can be repaired. I paid $500 for a new one for my 92 Accord, but it was only 6 years old at the time. It was practically the only problem I had with the car in the 12 years I owned it. I have no idea where you could bring the computer to be repaired, but it sounds like the best way to deal with it. Good luck
  • cybercoolcybercool Posts: 117
    Thanks guys.
    I saw one TCM on ebay for $140 with lifetime warranty with free shipping.
    Gonna try them out.
  • lizz1234lizz1234 Posts: 13
    i have a 1990 honda accord EX, and lately it's been giving me problems with telling me how much fuel i have. it'll say i have a 1/4 tank, but won't start unless i get more fuel in the tank first. i never get a light that comes on or a warning, it just won't start. this has left me stranded multiple times. any ideas?
  • thegraduatethegraduate Posts: 9,731
    For starters, fill up before you hit the quarter-tank mark. Beyond that - I'm no mechanic, but there are lots of useful people on this site who WILL help! If it makes you feel better, my '96 with 212k miles takes about twice as long to start when under 1/4 tank. I just treat my 1/4 line as my E line, and make sure to fill up by then; I still get a good 300 miles before I hit that.
  • Don't let your tank get down to 1/4

    Sounds like a bad gas cap or one that's not tightened completely. Second guess is that your fuel filter needs replacing. Less fuel in the tank means lower vapor pressure in the fuel system (and I am an engineer, FWIW). A clue might be when you are gassing up - normally, you should hear a "hiss" when you open the cap on this car.
  • lizz1234lizz1234 Posts: 13
    would replacing the fuel pump help? and if so, should i get electric or mechanical?
  • I've got a 91 Accord EX 150k miles. I need new front brake pads and rotors and rear brake pads. The Meineke mechanic there's something special about the rotors from this period and most shops don't have to equipment to repair/replace them. Is this true? He wants $400 to do the job which seems like a lot especially since I was hoping not to spend more on this one while I save for another. Is what he said about the rotors true? How simple of a task is this for a novice?
  • klordklord Posts: 6
    That's true. I went through this last year. I spent over 550 to get new front rotors and pads. What makes it so expensive, they said, is that the rotors are "pressed" on (like with a machine press) and thus hard to remove/replace.

    Newer Hondas do not have this problem, the rotors are now held on by screws, I just redid all pads and rotors on my 01 accord and was able to do it myself for under 200.
  • Thanks for the info klord. Because of it, I was able to do some useful research!
  • worldecmworldecm Posts: 2
    edited September 2010
    One of the most miss understood things about the car computers I rebuild is. If you open the case and touch the board a tiny spark of static electricity could flow from your fingers to the circuit board and through the main processor and damage it. Once that happens you can throw the unit away. Thats why I don't ever advise a customer to open the case and look around. More times then not they will see something they want to touch and thats it they killed it.

    It's not a good idea to open the box for other reasons like what are you going to do anyways once you get inside it? The parts for these units are not sold at radio shack. The suppliers who deal with have a minimum order of $1,000 to buy components. The cost of getting a rebuilt unit is so reasonable when you take all the facts into account. Like what if a professional tech ruins the unit. Well that can happen and at that point we have to eat it. We also use special agents to strip the board from the enamel coating that seals the circuit board. After we are done working on the unit we seal it again with a acrylic coating to seal and protect the board. Once again most customers will not have or use these items so the job is not done right by this point alone.

    Any ECm or ECU, TCM, BCM etc unit 5 years or older needs to be rebuilt or it can just miss function and or die while your on the road and cause a accident or get you stuck some place. I hope this helps you all... :) :)
  • cybercoolcybercool Posts: 117
    well I just blew my head gaskets and one mechanic gave me a $1000 is this a correct quote
  • It depends it was overheated and damage was done to the head. Get a detailed report from your mechanic and let us know.
  • astorastor Posts: 30
    Find a Honda mechanic who will do it for less. I got one of my independent Honda mechanics to do my 1990 EX for $180 (brake pads+machining the rotors), rotors have to be machined while on the car. If you need to find a good independent Honda mechanic go to cartalk.com mechanic files. I've found quite a number of great independent Honda mechanics there.
  • kat89kat89 Posts: 1
    edited November 2010
    1993 Honda Accord Automatic
    A while ago I was grocery shopping and when I finished my car wouldn't start. I had someone give me a jump start but it did nothing. I had it brought to the mechanic, they replaced some old spark plugs and it ran fine... for about 30 minutes. It started shaking every few minutes and especially at red lights and then died on me again on my way to work. I brought it back to the mechanic and they replaced some old wires and it ran fine... for another 30 minutes. This time it wasn't shaking, but it kept stalling more and more frequently every few minutes until it was stalling every 30 seconds. My boyfriend got it home and it's been sitting uninsured for a while. My boyfriend took a look at it a few weeks ago and duct taped the air intake tube and the box so it was sealed better and it ran ok while I test drove it around the parkade for a bit, but when at idle the car got quieter and quieter like it was about to die but didn't. I just went down today to check on it and it would start again. I have no idea what is wrong with it and I can't keep spending so much money on it if the problem isn't going to get fixed. Does anyone have any ideas as to what the issue is?
    Sorry for the novel, but I wanted to make sure all of the information was there.
    Thanks!
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