Honda Car Forum

jim beam wrote:
> marco wrote:

<snip>

>>
>> I looked today when the engine was cold. Coolant was at the top,
>> right up to where the pressure cap snaps into place.
>>
>> Also, today I put about 110 miles on the car, and the torque converter
>> worked like a charm.. It locked at 51mph and up like its supposed to.
>>
>> Sometimes it works great. Gotta love those intermittent problems.
>
> i should do a write-up for diagnosing this problem some time and mail it
> to tegger for hosting. right now, i have an led wired into my solenoid
> circuit for this exact same situation - so i can see when the solenoid's
> getting signal. so far, the solenoid system is rock solid in that the
> clutch locks whenever the solenoid gets signal. but there is a problem
> if that signal is not consistent.
>
> basically, the signal goes out when the ecu believes in the car is going
> fast enough, is in the correct gear and when the coolant is warm enough.
> a partial [out of order] checklist therefore is:
>
> 1. check the solenoid for operation
> 2. check the circuitry that feeds it
> 3. make sure the coolant system is absolutely purged with absolutely no
> airlocks
> 4. check the thermostat
> 5. check the the coolant sensor [the two-wire one under the distributor,
> not the single wire one, that's for the gauge on the dash]


Yoww! I found my copy of the Service Manual. This thing is a
complicated beast. 4 clutches!? 2 lockup solenoids. My head is spinning.

I guess I'll start by checking the resistance of the lockup solenoids
and then I'll see if I can check the shaft speed sensors and go from there.

I still haven't found how to check the coolant sensor, but I'll figure
something out I hope.

Thanks for the help. If I figure out my problem, I'll post it.