02 honda accord v6 b7xa

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veteranmech007
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02 honda accord v6 b7xa

Post by veteranmech007 » Wed Feb 11, 2015 5:10 pm

Ok so this transmission Is supposedly rebuilt customer ordered it on line from a online supplier.

I verified the case codes matched and installed with new torque converter. Drove fine forward and backwards.

Customer called me said it broke down on him this morning.

He says he has good solid reverse, but when he puts it in Drive Man 2nd or Man 1st or any forward gear it jerks the car hard and stalls out.
Sounds like a broken sprag but is there anything my tech might have missed, he's new and still learning. I'm going to stop by customers house on way home since it's on the way.

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tranibob
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Re: 02 honda accord v6 b7xa

Post by tranibob » Wed Feb 11, 2015 5:21 pm

Nothing in the transmission itself can possibly cause the engine to stall out. Either the lock-up is applying when put in forward, or it is something on the engine side that acts up when put in forward. Anything locking up inside the unit will just feel like when you have your foot on the brakes.

Once you get the vehicle and experience the problem it will probably be easier to tell what is actually happening.
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veteranmech007
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Re: 02 honda accord v6 b7xa

Post by veteranmech007 » Wed Feb 11, 2015 5:30 pm

Yea that's what had me, he said works great just all forward gears it feels like it wants to go forward but it just jerks real hard and then stalls out.

Would disconnecting the torque converter bolts and trying it hurt anything on these?

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Re: 02 honda accord v6 b7xa

Post by tranibob » Wed Feb 11, 2015 5:32 pm

You can't do that on a Honda the engine won't start, the ring gear is on the converter.
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veteranmech007
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Re: 02 honda accord v6 b7xa

Post by veteranmech007 » Wed Feb 11, 2015 5:34 pm

That's right lol yea I'll take a look at it tonight and see what it's exactly doing

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Re: 02 honda accord v6 b7xa

Post by veteranmech007 » Wed Feb 11, 2015 6:30 pm

I'm just trying to think what would cause it to lockup only In forward ranges.

I'll look at it and let you know what it's actually doing

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Re: 02 honda accord v6 b7xa

Post by tranibob » Wed Feb 11, 2015 6:41 pm

First you'll have to see if it really is the lock-up or not, it could be something else engine wise that make it feel like it is transmission related to the customer.

If it is the lock-up then I would start by unplugging the lock-up solenoid and the linears to see if it is still doing it. Maybe when he puts it in forward the way the engine moves pulls on wires and something is shorting somewhere causing this. But first you have to separate if it is internal or external, unplugging the lock-up solenoid and the linears should tell you that.
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Re: 02 honda accord v6 b7xa

Post by veteranmech007 » Thu Feb 12, 2015 3:56 pm

ok so looks like i have an electrical issue or a bad solenoid.

When the car is cold it drives fine no issues at all.

The issue arises once its warm/idling for about 15-20 min it will kill the engine in ALL forward gears.

I disconnected the TCC solenoid/ shift solenoid A and the problem goes away, im assuming something is causing the lockup solenoid to engages ones its warm and I AM ABSOLUTLY HORRIBLE when i comes to electrical and my normal electrical guy is on vacation

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Re: 02 honda accord v6 b7xa

Post by tranibob » Thu Feb 12, 2015 4:05 pm

Keep in mind it might also be that when you unplug both solenoids at the same time the change in gear command might mask the problem.

So start with the simple stuff. The TCC solenoid gets voltage from the computer when it is commanded ON, in gear at idle you should not have any voltage there. So just take a voltmeter and see what you have on the wire going to the solenoid. It looks like it is a blue wire with a yellow tracer. Once we know for sure if there is voltage there or not we can go to the next step.
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Re: 02 honda accord v6 b7xa

Post by tranibob » Thu Feb 12, 2015 4:07 pm

Actually, if I am reading the wiring diagram properly, it will be a yellow wire up to the solenoid connector, and then it becomes a blue and yellow.
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