Honda Accord Stuck in Park

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  • #9867
    Administrator5
    Keymaster

    This is my situation:

    Honda Accord 1995 EX Wagon.
    A few weeks ago it started getting stuck in Park and I would have to use the Lock Override to put it in N and then turn it on and drive. The D4 light flashing but car shifted OK (for the most part, maybe I had to let go of the gas a bit to get it to shift). Sometimes it would be stuck in Park, sometimes it wasn’t, when it would allow me to move it out of park after turning it on the D4 light did not blink and it shifted like a champ.

    I replaced the interlock solenoid on top of the transmission and it seemed to fix the issue but not quite, it still sometimes (but not as often) won’t let me out of Park and after a while the clicking noise would start as I push and release the break and I would be able to get it out of park. Only difference now with the new solenoid is that

    a) It takes less time for it to start clicking and allowing me to get out of park (i.e. it does not get stuck as often)
    b) Even after overriding and the D4 light blinking, the car seems to shift better.

    Do I need to get the transmission codes cleared so that the new solenoid start working completely? Do I need to replace something else? How much would it cost?

    The car has 175000 miles and is 23 years old, obvious to say I don’t want to put a lot of money into it. If it is another solenoid or maybe even the ECU or TCU I might still be able to finesse that if I get a used one on ebay or something. But I don’t think rebuilding the transmission or something major like that ($$$$) would be doable or worth it.

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    #9869
    aperezd
    Participant

    Hi,
    I am the OP of this question.
    More information.
    I shorted the port to pull the transmission codes and it flashed the following codes:
    1, 8 and 13
    Any help would be appreciated.
    Thanks.
    Alfredo.

    #9871
    Hostgator
    Member

    Thanks for all the input. I can tell you this much from the top that your Accord needs three new sensors, the BARO (barometric) the CKP (Crankshaft Position Sensor) and the HO2 sensor (Heated Oxygen sensor). As I looked at the information I have on Honda error codes, it also struck me that with each sensor description there was the cryptic ECM or Engine Control Module. The ECM is the big kahuna of engine modules, it is the microcomputer that provides the software to each sensor or module in the engine and it also takes the information, puts it all together and then makes decisions about emissions setting, accelerator settings (we haven’t honestly had accelerator control for nearly 30 years, it has all been done by computer). The other three sensors report to the ECM. All of them deal with emissions and fuel economy.

    From what you have told me it could be that one or more of the sensors has gone intermittent and could be shorting out the ECM, causing your transmission problems. I think the primary candidate in this one is the CKP as it sits in that chain of engine software, the one dealing directly with the engine and transmission — the powertrain. If this sensor is gone, then it is quite possible your Accord is acting the way it is acting. I’d suggest swapping out the three sensors I mentioned and the engine control module. I believe that if you do most of the problems you have discussed with me will go away.

    One other area to check — you have already started with the first solenoid — is the solenoid packs. There are two in your Accord, one should be on the outside of the valve body and the other should be on the inside. I don’t know which one could be going or gone, but I have to suspect it could be either. I’d suggest replacing both and that should pretty much fix your Accord’s problems.

    All told — between the sensors, engine control module and solenoids — you are looking at an investment of about $1,500 for parts and labor. If you think that it’s worth it in a vehicle that is, after all, 23 years old, then I would say go for it. If not, then why not turn the old Accord in on a slightly newer model. One of my closest friends just put the third transmission in his 2002 Accord EX 2.2 that has close to 350,000 miles on the odometer. He’s happy with the decision he made and his Accord seems quite happy, too.

    #9872
    aperezd
    Participant

    Hi,
    Thank you so much for your reply.
    I have priced the three sensors and I think I can replace them myself without too much trouble and without spending too much money.
    I will start with the CKP sensor and then follow with the BARO and the Oxigen sensor (you are refering to the O2 sensor right? I’ve never seen it being called the HEATED Oxigen sensor, but I assume it is the same thing). Hopefully that will fix the problem.

    If it comes to replacing the computer, are you talking about the ECU or the TCU?, I think this model has the ECU and the TCU together in the same space, but they are separate as I have seen both of them for sale on ebay.

    I have also seen on the forums that the TCU may have some resistors or capacitors failed, which I think I can replace (I’m pretty good at soldering electronics!). If the three replacement of the sensors does not correct the problem, I will inspect the TCU and ECU for possible resistor and capacitors that may have failed.
    If I do end up replacing the TCU or the ECU, does it need to be programmed to my car’s VIN? or can I just replace it with a part with the exact same part number from ebay or a junk yard?

    If it involves the dealer programming the new/or used unit, that will likely involve several hundred dollars which I a not sure I am willing to spend. The car moves (and it cools-important in Houston 🙂 ) which are my requirements for transportation, but if I have to spend $1500 on it I might as well just drive it as is until it dies and goes to the junk yard…

    Thanks for your help!
    Alfredo.

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