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Early gear changes and holding gears 

 

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 Post subject: Early gear changes and holding gears
Posted: Mon Jun 14, 2010 11:18 pm 
Getting Side Ways
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Ride: EA SVO, AU2 Forte

Location: Bendigo
VIC, Australia

I did a engine swap on the weekend and now even if you have the pedal flat to the floor it'll early shift at 3000rpm. it also won't kick down when you accelerate and if just cruising along under light throttle it will hold gears.
e.g won't go 1st-2nd till 30kms
2nd-3rd till 60 kms

so if cruising at 50 it holds second like i'm some sick mad prick being a wanker and it's really annoying and i'm guessing not good for the auto.

if you hold it flat and manual shift it up the gears it'll change as soon as the next gear is selected

any ideas?

 

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Weekend driver: EA SVO AU motor. Built BTR. TCE 2800 stall. T76 turbo. Locked diff. On E85. approx 320rwkw. 11.5 @121mph

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 Post subject: Re: Early gear changes and holding gears
Posted: Tue Jun 15, 2010 10:40 am 
Getting Side Ways
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Ride: 92 EB s

Location: DORRIGO
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Sounds like its automatic.
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 Post subject: Re: Early gear changes and holding gears
Posted: Tue Jun 15, 2010 10:47 am 
Getting Side Ways
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TPS Stuffed?
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 Post subject: Re: Early gear changes and holding gears
Posted: Tue Jun 15, 2010 10:48 am 
Getting Side Ways
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Just thinking - is this the EA? - is it a 3 speed? - sounds like you might not have the kickdown installed.

Or.. if its pre EB 2, one of the TPS's isnt connected

Nigel
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 Post subject: Re: Early gear changes and holding gears
Posted: Tue Jun 15, 2010 10:57 am 
Getting Side Ways
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Age: 26

Posts: 1109

Joined: 4th Sep 2009

Ride: 92 EB s

Location: DORRIGO
NSW, Australia

Did your car originaly have econ and power mode?
My mates auto xr6 had it and if it was in economy mode it would drive like you have described.
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 Post subject: Re: Early gear changes and holding gears
Posted: Tue Jun 15, 2010 7:58 pm 
Getting Side Ways
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Age: 28

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Joined: 11th Mar 2008

Ride: EA SVO, AU2 Forte

Location: Bendigo
VIC, Australia

both my cars are 4 speed autos.

the TPS's are plugged in. there are two. i even tried swapping plugs over. still did it. seems funny it only started doin it once i swapped engines. i used the old manifold so the only thing changed was the engine itself

 

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Daily driver: AU2. 5 speed. 19" FG luxos. Full exhaust. Lowered. AU3 XR leather interior, converted to full power windows. 3.45 LSD. IN THE FUTURE: Tickford 6
Weekend driver: EA SVO AU motor. Built BTR. TCE 2800 stall. T76 turbo. Locked diff. On E85. approx 320rwkw. 11.5 @121mph

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 Post subject: Re: Early gear changes and holding gears
Posted: Wed Jun 16, 2010 1:48 pm 
Getting Side Ways
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Age: 28

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Joined: 11th Mar 2008

Ride: EA SVO, AU2 Forte

Location: Bendigo
VIC, Australia

so i spoke to the guy at Fluid drive here in town and he reckons the auto has lost it's TPS reference. who know's how to back probe the TCM to see if it's getting a voltage reference from the TPS?

 

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Daily driver: AU2. 5 speed. 19" FG luxos. Full exhaust. Lowered. AU3 XR leather interior, converted to full power windows. 3.45 LSD. IN THE FUTURE: Tickford 6
Weekend driver: EA SVO AU motor. Built BTR. TCE 2800 stall. T76 turbo. Locked diff. On E85. approx 320rwkw. 11.5 @121mph

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 Post subject: Re: Early gear changes and holding gears
Posted: Wed Jun 16, 2010 1:50 pm 
Getting Side Ways
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Ride: 92 EB Falcon

87SIlude wrote:
Sounds like its automatic.

Yep spot on!
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 Post subject: Re: Early gear changes and holding gears
Posted: Wed Jun 16, 2010 7:25 pm 
Getting Side Ways
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WILDEB wrote:
so i spoke to the guy at Fluid drive here in town and he reckons the auto has lost it's TPS reference. who know's how to back probe the TCM to see if it's getting a voltage reference from the TPS?


You would probably be better off to measure it directly from the TPS, I would think.

If no one can tell you what it should be outputting then I'll look it up in the manual if you want mate.

Or you could just try swapping it over? Might be easier than buggering around testing it, if you have one that's known to be okay that is :p

 

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 Post subject: Re: Early gear changes and holding gears
Posted: Wed Jun 16, 2010 7:42 pm 
Getting Side Ways
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Age: 28

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Joined: 11th Mar 2008

Ride: EA SVO, AU2 Forte

Location: Bendigo
VIC, Australia

i swap the engine plug with the gearbox plug. made no difference

 

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Daily driver: AU2. 5 speed. 19" FG luxos. Full exhaust. Lowered. AU3 XR leather interior, converted to full power windows. 3.45 LSD. IN THE FUTURE: Tickford 6
Weekend driver: EA SVO AU motor. Built BTR. TCE 2800 stall. T76 turbo. Locked diff. On E85. approx 320rwkw. 11.5 @121mph

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 Post subject: Re: Early gear changes and holding gears
Posted: Wed Jun 16, 2010 8:11 pm 
Getting Side Ways
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Location: Brisbane
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Actually the guy makes sense - there is a procedure to learn the TPS for the Autos. Something like start the car, leave it in neutral for a couple of mins, then stop the car, key in on, Hold throttle flat, and wait 2 mins...
.. but I know thats not it exactly. The procudure teaches the TCM the TPS values for open, and closed, and it can work from there.

it is in the service manuals for the cars...
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 Post subject: Re: Early gear changes and holding gears
Posted: Wed Jun 16, 2010 8:41 pm 
Getting Side Ways
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Age: 28

Posts: 3374

Joined: 11th Mar 2008

Ride: EA SVO, AU2 Forte

Location: Bendigo
VIC, Australia

but i used the same manifold. and i've had the battery disconnected heaps of times and had no problems before

 

_________________

Daily driver: AU2. 5 speed. 19" FG luxos. Full exhaust. Lowered. AU3 XR leather interior, converted to full power windows. 3.45 LSD. IN THE FUTURE: Tickford 6
Weekend driver: EA SVO AU motor. Built BTR. TCE 2800 stall. T76 turbo. Locked diff. On E85. approx 320rwkw. 11.5 @121mph

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 Post subject: Re: Early gear changes and holding gears
Posted: Wed Jun 16, 2010 8:54 pm 
Getting Side Ways
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Gallery: 7 images

Location: Brisbane
QLD, Australia

Er - if you think you have changed nothing and your not listening for posibilities, why ask!.

Just making suggestions. I, like most of the members here have had more than my fair share of falcons (and their problems).

Good luck!

Cheers

Nigel
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 Post subject: Re: Early gear changes and holding gears
Posted: Wed Jun 16, 2010 8:58 pm 
Getting Side Ways
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Age: 28

Posts: 3374

Joined: 11th Mar 2008

Ride: EA SVO, AU2 Forte

Location: Bendigo
VIC, Australia

and your not listening to me. i used all the original bolts ons

 

_________________

Daily driver: AU2. 5 speed. 19" FG luxos. Full exhaust. Lowered. AU3 XR leather interior, converted to full power windows. 3.45 LSD. IN THE FUTURE: Tickford 6
Weekend driver: EA SVO AU motor. Built BTR. TCE 2800 stall. T76 turbo. Locked diff. On E85. approx 320rwkw. 11.5 @121mph

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 Profile  
 
 
 Post subject: Re: Early gear changes and holding gears
Posted: Wed Jun 16, 2010 9:06 pm 
Getting Side Ways
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Posts: 2448

Joined: 5th Nov 2004

Gallery: 7 images

Location: Brisbane
QLD, Australia

Your thinking inside the box. Your ECU and TCM are not that easy to predict.

Anyway - Im no longer watching the topic. Best of luck - I hope you can figure the problem out.

Nigel
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