940 non-turbo

I've read in the archives that Volvo has released a TSB for remedy to idling ailment. According to those postings, there is a 8-pin connector that gets corroded and could possible cause erratic idling.

Can someone tell me where exactly is this 8-pin connector?
My car has this idling ailment that had undergone quite a bit of tune-up and parts replacements but to no avail.

Laozong

There are, I believe, three 8-pin connectors in the engine compartment, all on or near the suspension towers. But this TSB suggests something: one cure for driveability issues, all due to electrical malfunctions, is to disconnect every electrical connector under the hood with the sole exception of the oxygen sensor connector, spray it with Caig Labs "DeOxIt", and reconnect using silicone dielectric grease. Volvo began using this at the factory sometime in late 1991, so your car may suffer from corrosion. Get the DeOxIt at a quality electronics supply store catering to computer geeks. Radio Shack does not have it. Or order directly from Caig Labs in California. This is a miracle substance useful for many electrical maladies.

Steve, Thanks again for the info. Will get to it this weekend since it going to be a long process cleaning up every connectors.

BTW, I've used a feeler gauge to check for intake leak but could not find any and I've retorque the intake manifold nuts again. They were all tight. Yet my idling remains erratic.

Can a hardened dipstick O-ring cause it? I doubt such a small thing would give rise to such a big idling issue but you'll never know...

Thanks

Laozong