Bigger cam problems!

General Tuning Questions And Discussions
jca
Posts: 135
Joined: Mon Dec 07, 2009 4:14 am
cars: HQ monaro
vz ss thunder
ve ss sports wagon

Re: Bigger cam problems!

Post by jca »

if u open the throttle blade to bring the idle steps down does it cause problems with the tps sensor not reading 0% at idle?
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VL400
Posts: 4991
Joined: Sun Mar 01, 2009 4:54 am
cars: VL Calais and Toyota Landcruiser. Plus some toys :)
Location: Perth, WA

Re: Bigger cam problems!

Post by VL400 »

Initially it might but the PCM re-learns what the TPS voltage is when the throttle is closed.
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Holden202T
Posts: 10435
Joined: Sat Feb 28, 2009 11:05 am
Location: Tenambit, NSW

Re: Bigger cam problems!

Post by Holden202T »

i guess it depends on the motor too ... for example i have a 70mm throttle body on my 3.3ltr .... so it doesn't need to move much to increase the idle rpm, however if i had the 60mm v6 throttle body on it i'd have to screw it in alot more to achieve the same idle.
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VX L67 Getrag
Posts: 2971
Joined: Sun Aug 02, 2009 11:16 am
Location: Bayside, Melbourne, Victoria

Re: Bigger cam problems!

Post by VX L67 Getrag »

Hey All,

This did exactly that, I tried just opening T/b till it eased the problem(didn't completely fix it) but then once I did this overtime it started screwing with trans shift points & more with it learning a bad throttle position!

So yeah definitely need to fix the problem on later model cars & don't just try cutting corners!

Cheers VX L67 Getrag
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