ZS 180 Problems.

[redvanman1964]

Every now and again my revs on tick over go really erratic and on accelaration the revs will stick high with foot off the throttle. The garage changed a some sort of low rev valve a month ago now its started happening again.
Has anyone else had this problem and if so what was the cure.

Cheers for any info.

[madfiddler]

My revs on tick over are also a bit strange. They seem to go from around 700 to 1200 up and down, up and down, and then after a few minutes settle into a 'proper' idle. Not got a sticking throttle though, thank goodness.

[Yugguy]

Have a look here:

http://forums.xpowerforums.com/showthread.php?t=2798

[redvanman1964]

Thanks for that Yugguy, i've had mine on T4 at the garage and it shows no faults. It only happens about once a month and the rest of the time it runs like a dream.

[Yugguy]

tbh mine's intermittent, so i wondered if it was just something gunged up, it seems to be settling down as well. the car's still as fast as ever so I'm not worried, and mpg seems ok still too.

[madfiddler]

My throttle is now sticking almost all of the time. It was intermitent before the xpower advice, and terrible now. I didn't do it myself, I took a print out of the xpower advice to the garage.

Am hoping they can come up with some more advise there, since I very nearly lost it around a roundabout today, lifting off the throttle but the car not really lifting off..

[Yugguy]

Ok, remove the throttle body assembly.

it's quite easy, take off the main intake pipes and the smaller pipes such as the crankcase vent. Take off the throttle cable. it's then four torx screws, t25 iirc, and the whole thing comes off. Give the entire throttle butterfly valve assembly a good clean with white spirit type stuff to remove any caked-on deposits. I also filed a bit off the stop nut as it's non-adjustable.

This has made a big difference to mine but it still does it occasionally. I think tbh the return spring isn't as strong as it should be so I'm going to put an expansion spring on it when I get a spare 5 mins sometime.