Part throttle kangarooing

[Evogone]

Poor earth causing voltage fluctualtion to / from sensors. You should hold the throttle at 2.5k and it should be rock solid not fluctualting.

[simonr85]

mines doing this too, i think its the vacuum pipe that goes from the map sensor to the inlet manifold, behind the drivers headlight. (probably blocked or split or not properly connected to the manifold)

as when i play around with that pipe it seems to make the problem worse/better.

Gonna have a proper look when its a bit warmer!

Interesting you say that. I have a pinhead hole in mine. may replace it and see what happens...

let us know your findings, and where and how much you get the new vac pipes from???

[white16valver]

This thread is all good!

Fluctuating idle really shouldn't be a problem on standard cams lol

[LEIGH-ANNE]

My 2 started doing this when i had that new chip put in

[Wobba]

Poor earth causing voltage fluctualtion to / from sensors. You should hold the throttle at 2.5k and it should be rock solid not fluctualting.

2.5k is fine. I am talking 1050 rpm(ish). When doing slooooow commuting, holding biting point going up hill it is a pain.

[vkosho]

May be wrong but is it possible it could just be the clutch springs. almost like a harmonic bounce if that makes sense. I know exactly what your experiencing always had it on occasions with different cars and never really thought it was a big deal.

[cooper]

My 2 started doing this when i had that new chip put in

just to bring this post back from the dead instead of starting a new 1.
my williams has stopped doing this since i hav removed the gunner180 chip and replaced with the standard chip but now i hav a new problem which has started 2nite, its like its running out of fuel wen crusing at a steady speed any 1 got any ideas??

[busterhymes]

hi kyle, just a comment the car had the same issue with an original OE chip fitted thats why i changed coolant temp sensor and cleaned out the ISCV this cured the problem for me so bit suspicious that the 180 chip was the fault
re your new fault thats a new one to me seems a coincidence that changing the chip has brought up another fault

[Wobba]

I doubt it is a related issue.

The 180 chip isn't actually a fault, it's due to the rather lean map it runs at very low throttle I believe. It's more of an annoyance than a problem, as long as I know it's just that. The performance gains are worth it.

Cooper, that could be several things causing your problem ranging from minor to serious. Have a search.

[cooper]

yea i removed the gunner chip coz my mates diagnostics wouldnt connect to the ecu, kept saying wrong ecu so we thought it mit be coz the chip was installed. havent had chance to get it bak to him to try it now to see if it was the chip that was blocking it.

my new problem tho seems like its struggling, like if its not getting enough fuel, just been out an its still doing it just not as bad as last nite, it only seems to do it tho wen i'm doing a steady speed, it dont do it wen i'm accellerating.
i was searching through the site last nite and couldnt find anything so i'll keep looking.
any ideas what it could be, the fuel filter is only 2 months old and the injectors were cleaned by the last owner?