Another CEL issue to look out for....

[PKN]

I finally got around to looking for the reason for my CEL illumination. (numerous error codes but always fast idle on both banks)

My first find was a broken vacuum line connector from the passenger side air filter box. My solution there was to epoxy the hole in the air filter box and to thread a new hole to insert a brass barbed connector with some rubber vacuum hose. The original connector is easy to damage when changing air filters. I wasnt convinced that this was the cause of my problem which had recently been causing a rough idle and hesitation on accelerating.

There is a rubber "T" vacuum connector under the manifold intake and directly behind the fan. I discovered the T had split and that sometime in the past, the fan had nibbled away at a plastic elbow fitting. A quick run to Lowes plumbing departrment provided a brass T piece and elbow along with new stainless hose clamps. It took about an hour and $10 to effect this repair, codes cleared and she runs perfectly again. I found one other case of this problem ocurring on this forum but if you get a CEL and rough idle - check this first. It is easy to get to and easy to replace.

If you remove your intake manifold, take care that this rubber T piece is properly secured in the plastic clamp that keeps it away from the fan. I should say that in my case, the rubber piece had perished and not been slashed by the fan

Steve

[Faceman]

I made this mistake with the fan about a year ago.