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Jason Kingsmill
TryHard
NSW
UZZ31 Soarer V8

Posts: 408
Reg: 07-2005

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 Saturday, December 31, 2005 - 03:29 pm, by:  Jason Kingsmill (Jason_k) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Just another little weird prob I have now.

When driving around the 60km/h mark(might also be elsewhere, but have not tested yet), it seems as though the throttle is very touchy.

If I am just cruising at one speed, and take the throttle off just a tiny bit, you can really feel excessive engine braking, something that I have not felt before.
It is normally fairly smooth between closed throttle and slightly open throttle, but is not at present.

I did have the TPS off to test with the last problem I had, but I can't recall feeling it since then.

As far as I can tell, it seems to be only when it's kicked into overdrive, but don't quote me on that.

Any ideas?
Adam Foster
TryHard
SA
SC400 Limited GT

Posts: 200
Reg: 07-2005

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 Saturday, December 31, 2005 - 04:36 pm, by:  Adam Foster (Adam) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
you got the over drive button off? if your use to driving with it on and you've accidentally turn it off then you will get some engine breaking
Jason Kingsmill
TryHard
NSW
UZZ31 Soarer V8

Posts: 409
Reg: 07-2005

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 Saturday, December 31, 2005 - 05:13 pm, by:  Jason Kingsmill (Jason_k) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
I drive with O/D on and off all the time depending on condition, so no, that's not it unfortunatly.


It is much more noticable with cruise control on if that makes a difference
Morgan Cross
Goo Roo
Victoria
Soarer TT

Posts: 1105
Reg: 07-2005

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 Sunday, January 01, 2006 - 12:12 pm, by:  Morgan Cross (Morgan) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
My car does it too but it's not a big drama, if any easy solution is had, I'm all for it haha. Otherwise meh.
Ian Johnston
TryHard
South Australia
UZZ30 GT 4.0

Posts: 359
Reg: 07-2005

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 Sunday, January 01, 2006 - 12:18 pm, by:  Ian Johnston (Ted) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Maybe stuck in a lower gear. Take off from a stand still, and count the gear shifts to see what gear you actually are in.
Morgan Cross
Goo Roo
Victoria
Soarer TT

Posts: 1106
Reg: 07-2005

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 Sunday, January 01, 2006 - 01:13 pm, by:  Morgan Cross (Morgan) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
It's not that, with OD on going along in fourth gear at 80k's and I take my foot off the pedal and the revs nearly instantly drop from 2100rpms to 1100rpms, then I re-apply my foot on as slightly as possible, no matter how soft I do it, and the revs instantly drive back up to 2100rpms.

Very similar to what Jason was saying.

I dunno if it's normal or not, Alans car does the same.
Gavin Thiele
Tinkerer
QLD
GZ10 TT

Posts: 71
Reg: 07-2005

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 Sunday, January 01, 2006 - 01:45 pm, by:  Gavin Thiele (Ndgcpr) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Morgan Cross wrote on Sunday, January 01, 2006 - 01:13 pm:

I take my foot off the pedal and the revs nearly instantly drop from 2100rpms to 1100rpms, then I re-apply my foot on as slightly as possible, no matter how soft I do it, and the revs instantly drive back up to 2100rpms.



isn't that just what happens with an auto's torque converter?
Jason Kingsmill
TryHard
NSW
UZZ31 Soarer V8

Posts: 412
Reg: 07-2005

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 Sunday, January 01, 2006 - 02:30 pm, by:  Jason Kingsmill (Jason_k) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
That's exactly what it's doing Morgan.

But mine has only just started doing it. It's annoying, that's for sure, but isn't that bad.
Jason Kingsmill
TryHard
NSW
UZZ31 Soarer V8

Posts: 413
Reg: 07-2005

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 Sunday, January 01, 2006 - 04:52 pm, by:  Jason Kingsmill (Jason_k) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
FIXED:-)


I went out and tested it. If I just held the throttle at about 2000rpm, it would after a few seconds, drop down to about 1200rpm then flick straight back to 2000rpm, and continue doing that.

Idle was still fine at 650-700rpm. I adjusted the TPS which raised the idle speed to 1000rpm and tested. It went fine then.
So I kept adjusting the TPS until I found where the idle was still around 700rpm, but didn't play sh!tz'n'giggles with rev speed


I couldn't be bothered to do the proper procedure with feeler guages and resistance. But it's running fine now, so I'm happy.
Brett Cashmore
TryHard
Western Australia
Celsior C-Spec

Posts: 147
Reg: 07-2005

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 Sunday, January 01, 2006 - 11:20 pm, by:  Brett Cashmore (Celsior_dude) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
My Celsior did a similar thing last week...
I started the car after having not driven it for a few days, it ran a bit rough for a few seconds and then seemed to run fine. Once I got down the road I noticed the idle was high (about 12-1400 rpm) and when trying to cruise at about 2000 rpm the car would surge between 1200 and 2000 rpm.
This was rectified when I stopped and restarted the car. It hasn't faulted since.

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