[Shotimes] tranny issue (maybe)

[Carl Prochilo]

Jason,  Don't do something you will regret later.  Is the compressor
working?  If so, think of it as a safety device at times.  Ever have a lot
of people in your car and it's incredibly humid out?  The compressor will
dry the air in the cabin and clear moisture off your windshield.  Unless
you're converting your SHO into a racer, I don't see the point of removing
the compressor.
-- 
Cheers,
Carl Prochilo
92 Ultra Red Crimson

On Sat, November 6, 2004 3:27 pm, Jason Hartberger said:
> Actually, this just about perfectly explains it. And, as you should've
> been
> able to figure out by now, I *like* long-winded... :-P
>
> I'll check the compressor. Stupid compressor. I'm about to just take it
> out
> and be done with A/C anyway... I don't need it.
>
>
> ----- Original Message -----
> From: "Adam Parrott" <parrotta@usa.net>
> To: <shotimes@autox.team.net>
> Cc: "Jason Hartberger" <at3hartberger@mail.com>
> Sent: Saturday, November 06, 2004 3:00 PM
> Subject: Re: [Shotimes] tranny issue (maybe)
>
>
>> Jason,
>>
>> While it is technically possible that your converter may be playing
>> tricks
>> on you at idle, I wouldn't look to it as the source of your idle hunting
>> problem.  Aside from a set of (unused) 2nd gear lock/unlock functions in
>> the H3Zx code, neither the '93 H3Zx or the '94-'95 D4U1 PCM programs
>> make
>> any provision for converter lock in first or second gear (or IOW, the
>> converter is always unlocked in first and second gears on the Gen 2
>> ATX).
>> Even so, it is technically possible that a short or other electrical
>> gremlin is playing occasional havoc with the converter's lockup solenoid
>> in
>> the valve body, causing erratic lockup while at idle.  Highly inprobable
>> (and very unlikely), of course, but still technically possible.  ;)
>>
>> BTW - have you checked to make 100% sure that the compressor is not
>> engaging when this idle drop happens, despite the fact that the EATC is
>> not
>> in a compressor-use mode (i.e. clutch sticking, etc.)?
>>
>> As for the converter behavior that you described while at highway
>> cruise,
>> it's perfectly normal.  As I noted previously, the converter remains
>> unlocked in both first and second, and will not lock in third or fourth
>> until a) the coolant temp (as indicated by the ECT sensor) has reached a
>> certain, predefined temperature (also referred to as "Torque Control" in
>> EEC circles), and b) sufficient throttle position and speed have been
>> achieved for that particular gear (third and fourth gears each have
>> their
>> own set of lock/unlock tables that specify when the converter should
>> lock
>> or unlock based on TPS and VSS sensor feedback).
>>
>> IOW, the behavior you described is normal.  ;)
>>
>> Sorry for the long-winded reply.  Hope it helped a wee bit.
>>
>> Adam
>>
>>
>> ----- Original Message -----
>> From: "Jason Hartberger" <at3hartberger@mail.com>
>> To: "Shotimes Mailing List" <Shotimes@autox.team.net>
>> Sent: Friday, November 05, 2004 10:55 AM
>> Subject: [Shotimes] tranny issue (maybe)
>>
>>
>> Hey guys, my engine has been acting kinda weird lately - actually, ever
>> since the tranny swap. When at idle, the engine will normally rev fine
>> at
>> about 900 rpm (I have ted b's chip in), but occasionally (every few
>> minutes
>> or so worth of idling), the engine will... I guess grab? the RPMs will
>> dip
>> to about 700 for just a tiny little while and the car will start to
>> lurch
>> forward a little if I'm not on the brake. it's like the torque converter
>> is
>> starting to lock up for just a little while... like a tenth of a second,
>> but then it'll back off and everything will be ok. I do have a brand new
>> AXODE in there so it's under warranty, but is there something wrong with
>> my
>> tranny? I'm not too worried about it as it hasn't caused the engine to
>> stall yet.
>>
>> While I'm on the subject... when I'm at highway speeds, after letting
>> off
>> the throttle to slow down and pressing on it again, the engine will rev
>> up
>> like it should, then it goes down about 300-400 rpm, apparently as the
>> torque converter locks up. it stays down until it happens again the next
>> time I get on the throttle (even ever so slightly). Is this normal? it
>> happens every frickin' time I let go of the throttle... shouldn't the
>> converter stay locked up? or not? I really don't know much about
>> ATXs....
>> please help!
>>
>> Jason
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