406 ticking over unevenly

I’ve had an intermittent problem in my ’96 2.0LX 406 over the last
couple of weeks.

Occasionally on tickover, the engine revs will drop to about 600, then
up to about 1200, then back down. It will keep doing this for the rest
of the journey. This isn’t a problem in normal driving, but when it
happens in traffic, or when I stop at a red light, the car very often
stalls. I’m having to put my foot on the throttle just to keep it
running.

I’ll add that I’m having the problems with the speedo occasionally not
working that I’ve asked about in another topic - just in case this has
a bearing on the problem.

 

dazza12 wrote in message

http://www.autoforumz.com/eform.php?p=578571

Sticky idle vavle perhaps? Try a wash out with carb cleaner and allow to dry
out fully before re-starting.

Bob

 

Where’s the best place to spray carb cleaner? Should I take off the
air cleaner and spray into the intake?