I think I fixed the problem. The PCV valve was really dirty. I replaced the flame trap and engaged the IACV and it seems to be working fine now.

Correction:

Nope, I was wrong. It's not fixed. This is driving me crazy. After cleaning it, it worked great for a few miles, now it's worse than ever ...

I hope this helps. Really difficult to get down there with a camera.

It seems like there is a sensor missing. On the passenger side of the engine block toward the rear there is a spot for a sensor, but nothing in it (just beneath the exhaust manifold). Any idea what that sensor would be?

Replaced the vacuum hose for the brake booster. No difference. I removed the removed the cruise control cable from the throttle pulley, as my cruise control has never worked anyway. It seemed to smooth it out a little. I then realized that a vacuum hose from from the cruise control servo to the evap ...

Right on! The brake booster hose looks horrendous. I'll replace it this week and get back to you all.

It has new plugs and wires, although by the looks of it, the mechanic who had my car for over a month put cheap, generic-looking plugs in. There are also spare connectors all over the place not ...

1. 1993 940 Non-Turbo Wagon
2. Around 201,000 miles
3.Newish engine put in by horrible mechanic recommended by my uncle (took them over a month). Since then, I've cleaned the IAC valve, MAF sensor, throttle intake, and throttle body. I also replace the hose running from the IAC to the intake, as ...

Just drove cross country with my wife and our '93 940. Chicago to NYC to Baltimore to Savannah to New Orleans to the Ozarks to Kansas City to Yellowstone to Seattle to Portland to Redding to Santa Cruz to Long Beach.

I have a OEM exhaust manifold that I was going to install before my wagon went into a shop for an engine rebuild. They ended up putting a new one in. I bought the part from Sweden Auto Warehouse (sawvolvo.com) for $150. I'd be happy to let it go for $100 (paypal preferred). I'll include UPS ground ...