It looks like you're new here. If you want to get involved, click one of these buttons!
Revs dropping and rising again. Help !
What happens is that travelling at any speed, the revs drop from 2k to 1k then back again. It hasn't done it for the last week until today.
I have replaced spark plugs and leads, fuel filter,PCV valve,air filter and all hoses are good. The check engine light doesn't come on at all. What could it be ? Anyone shed any light on what it might be ?