Mila,

I have B230FD engines in both of my 200k+ mile 940s. Your post is the first I have seen from someone who has experience with the Pulse Air system.

Where did you get replacement valves, dealer or after market? Cost?

How can they be plugged? Would I remove the hose and plug it, or do I plug the valve, or both? Or do I simply plug the vacuum hose?

The thick black rubber fitting that connects the valves to the hoses (top left front of engine) is cracked. It looks expensive. Did you replace it also? Do you have a source beside a dealer?

thanks for your time.

Dennis

Dear Steve,

May this find you well. My 94 940 with B230FD engine has has two fuel pumps (an in-tank pre-pump and an externally-mounted main pump). I believe the oil squirters were put on all B230 engines made for the 1993 and later model years.

After the 1994 model year, cars with the B230FD engine have only one fuel pump. As with the cars equipped with Rex-Regina ignition, this fuel pump is in-tank.

Also, in the 1994 - and I believe later years - the fuel pump relay had a different format and location. Up to 1993, it was a white rectangular unit, mounted in the second row of the main relay block, on the end of the row closest to the driver. After 1993 - i.e. in 1994 and later - it was a small blue cube, mounted on the first row of the main relay block, towards the passenger end of the row.

I'd guess there are cars, that are exceptions to these general guidelines.

Hope this helps.

Yours faithfully,

spook