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  #1  
Old 08-21-2003, 09:02 PM
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Hesitation Found: Ecu Crush Mod Really Works

I had some spare time tonight wile waiting for the paint on my wiper arms to dry, so I got on the Mitchell and looked up TSB's on hesitation and there it was right on the screen, I couldn't belive it. I had always thought the ECU crush mod was a hack fix, I didn't know it was an acctual factory TSB. So I had the directions and a nice pic of where it was, so I pulled out the ECU and crushed that baby, and on the way home NO MORE FREAKIN HESITATION! Happy Day.



Also disconecting the battery seems to have reset my idle problem after adjusting my TPS. Happy Day indeed.
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91 Legacy Turbo 5spd. FMIC, crappy stock turbo, ACT clutch.
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  #2  
Old 08-21-2003, 11:57 PM
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wow, i guess i should check into this....do you have the tsb handy?
thanks
phil
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  #3  
Old 08-22-2003, 12:00 AM
FearWhat
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That all sounds kewl. But were do i look up for those for my SVX? and how to do it.

thanks man., I would love to kill that hesitation., well ttyl
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  #4  
Old 08-22-2003, 12:17 AM
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Check the how-to locker and yahoo locker/archives for the TSB and how to on the crush mod. It's there. But I don't have a 92 so I don't have to do that.
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Current SVX: NONE
Previous SVXes: •1994 LE Barcelona Red 107k • 1992 LS-L Pearl White 143k • 1994 LSi Bordeaux Pearl 220k • 1992 LS-L Ebony Pearl 184k • 1992 LS-L Liquid Silver 145k • 1992 LS-L Liquid Silver 102k • 1992 LS-L Ebony Pearl 123k
Other current cars:2001 Jeep Grand Cherokee Black
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  #5  
Old 08-22-2003, 12:43 AM
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thanks....

think Ill do mine this weekend and take some pics
of the process if I remember my camera.....
This stuff all over the web, just got to search
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  #6  
Old 08-22-2003, 01:03 AM
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Heres a good link

for some good pics and info

http://www.scoobymods.com/forums/sho...s=&threadid=98
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CLICK the LINK below to Visit the SVX Store:

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Cars in the garage:
92 Toyota Soarer Single Turbo JDM RHD
70 Boss 302 Mustang 39k original miles
97 SVX Lsi
92 Liquid Silver Murano-ized (1st of its kind)
71 Cougar Xr7 Conv 351c 4v 4spd
69 SS Camaro 350
71 Nissan RHD Fairlady Z
70 Stang Fastback
70 Amc AMX 390
71 240z
89 Conquest TSi w/ 5.0 v8 swap
84 Mustang GT Turbo conv

"good, if it bleeds, we can kill it ....."
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  #7  
Old 08-22-2003, 02:08 AM
FearWhat
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Now I do have one Q before i do end up crushing something in my newly purchaced svx hehe,

Does anyone know if this has any long term effects on the car?

thanks ttyl
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  #8  
Old 08-22-2003, 09:46 AM
Shot king
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Is this somthing everyone can benefit from? I don't have any noticeable hesitation on my 92 or maybe i do and i'm just so used to it i don't notice it. Any help you can give me subafreak and i'm sure Type O would be proud.
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  #9  
Old 08-22-2003, 10:17 AM
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if its a TSB directly from Subaru....
you can usually trust it. An engineer made this happen
not some kid in ohio who thought it may be a good idea.
If you have a 92, it cant hurt to do it regardless
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My mom will forever live in me and
never be forgotten, one day Ill see her again

CLICK the LINK below to Visit the SVX Store:

http://www.planetsvx.com

http://www.motorsportwarehouse.com/svx/sig2.jpg

Cars in the garage:
92 Toyota Soarer Single Turbo JDM RHD
70 Boss 302 Mustang 39k original miles
97 SVX Lsi
92 Liquid Silver Murano-ized (1st of its kind)
71 Cougar Xr7 Conv 351c 4v 4spd
69 SS Camaro 350
71 Nissan RHD Fairlady Z
70 Stang Fastback
70 Amc AMX 390
71 240z
89 Conquest TSi w/ 5.0 v8 swap
84 Mustang GT Turbo conv

"good, if it bleeds, we can kill it ....."
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  #10  
Old 08-22-2003, 10:39 AM
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Quote:
Originally posted by Shot king
Is this somthing everyone can benefit from?
If you have a 92, it can't hurt.
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Lwin M. Maung (Member # 147)
Current SVX: NONE
Previous SVXes: •1994 LE Barcelona Red 107k • 1992 LS-L Pearl White 143k • 1994 LSi Bordeaux Pearl 220k • 1992 LS-L Ebony Pearl 184k • 1992 LS-L Liquid Silver 145k • 1992 LS-L Liquid Silver 102k • 1992 LS-L Ebony Pearl 123k
Other current cars:2001 Jeep Grand Cherokee Black
If at first you don't succeed, CHEAT!
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  #11  
Old 08-22-2003, 01:04 PM
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I'm more than ready to do this, but I'm not sure I understand the issue of Hesitation?
When, where does this occur?
I know the car definately hesitates when its cold, but is there something a little more specific?

I suppose I could just crush the bugger and see....
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  #12  
Old 08-22-2003, 10:06 PM
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Hesitation ?

Yes please, will someone define the hesitation referred to. Is this the rather tardy kick-down response which is annoying when one calls for everything on tap when making an overtaking manoeuvre ? If so an improvement would be welcome.

The component involved in ̉the crushÓ is most certainly not a resistor and is more certain to be a ferrite bead inserted to prevent possible R.F. interference, hence the reference to noise suppression. Just how removing it could cure ̉hesitation Ô is rather intriguing and must have presented a curly problem to the original designer.
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Last edited by Trevor; 08-22-2003 at 10:11 PM.
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  #13  
Old 08-22-2003, 10:22 PM
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standard hesitation

From a dead stop, when you take off
many 92 cars experience a hesitation
for a split second before the car actually
takes off.......
Sometimes the hesitation is also caused by
transmission woes when the cars cold
but thats a whole different ballgame.....
__________________
My mom will forever live in me and
never be forgotten, one day Ill see her again

CLICK the LINK below to Visit the SVX Store:

http://www.planetsvx.com

http://www.motorsportwarehouse.com/svx/sig2.jpg

Cars in the garage:
92 Toyota Soarer Single Turbo JDM RHD
70 Boss 302 Mustang 39k original miles
97 SVX Lsi
92 Liquid Silver Murano-ized (1st of its kind)
71 Cougar Xr7 Conv 351c 4v 4spd
69 SS Camaro 350
71 Nissan RHD Fairlady Z
70 Stang Fastback
70 Amc AMX 390
71 240z
89 Conquest TSi w/ 5.0 v8 swap
84 Mustang GT Turbo conv

"good, if it bleeds, we can kill it ....."
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  #14  
Old 08-22-2003, 10:26 PM
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Trevor, I think its actually an inductor or coil(can't remember what they are called, but opposite of a capacitor), and we can't remove it, we just crush it a little, which I would expect reduces its inductive charactoristics therefore changing some logic decision.
Capacitance/inductance.

Anyways, I'll give it a shot, and see where it changes the so called hesitation, maybe everywhere???
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92 Pearlie, sold @ ~209k miles. Now owned by Tim.

Current Ride, 1985 Honda Aero 80, stock 3024 klms
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  #15  
Old 08-23-2003, 12:11 AM
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Quote:
Originally posted by CDG
Trevor, I think its actually an inductor or coil(can't remember what they are called, but opposite of a capacitor), and we can't remove it, we just crush it a little, which I would expect reduces its inductive charactoristics therefore changing some logic decision.
Capacitance/inductance.

Anyways, I'll give it a shot, and see where it changes the so called hesitation, maybe everywhere???
yeah, its a wire that we merely are removng the resistance from. Who knows why it is there to begin with
phil
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