[Shotimes] tranny issue (maybe)

[Jason Hartberger]

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