Thanks in advance for your help, this is my first post but I've been lurking for a couple of years whenever I have a problem.

I'm going to try to be as thorough as possible so please bear with me. Over the Thanksgiving weekend my '94 940 (133K miles) had been sitting nice and cozy in our garage for about 3 days when I tried to crank it. It shuddered violently and wouldn't start, it just shook. I waited a minute and the same thing happened again only it was a little less violent without so much shaking. I opened the hood like I knew what I was doing and checked the oil and coolant levels. The oil was a little low so I put a quart in and tried to crank it again and it started up just like nothing had ever happened. I didn't give it another thought. Fast forward to 2 nights ago. I drove from work (about a 45 minute drive) straight to the grocery store. After getting back in the car it cranked just fine but as I was driving across the parking lot I had no acceleration and the car would intermittantly lurch forward like it was having spasms. I pulled over and sat for a few seconds in drive listening to the idle. The idle sounded completely normal. Then I pulled back out onto the road and every time I would give it gas it would lurch forward and then slow back down. Then it just started driving normally again. I thought it seemed like maybe my fuel injectors were dirty and it was misfiring so I planned to buy some techron in the morning. I forgot and drove to work as normal yesterday morning and then drove home. I parked the car in the garage and went inside to grab some clothes to run to the dry cleaner and when I cranked the car again 5 minutes later it started doing the lurching no power thing and driving uphill it was rediculous. I couldn't reach more than about 15 mph on a flat surface. I kept expecting it to get better but it didn't so I turned around a mile down the road and came back home. I was going to drive it straight to my mechanic this morning or as far as I could and have it towed the rest of the way if necessary. I made it about 45 minutes and as I was merging onto the interstate in rush hour traffic I accelerated and then lost power and the lurching began again. I managed to limp about 5 miles in the emergency lane to the exit my mechanic is on and lurch from one parking lot to the next until I got to his garage. He says he thinks it is either a restriction in the exhaust system or the air mass meter? He originally said it sounded like a gas pump problem which made sense to me since I only had about 1/8 of a tank. Any ideas? Anyone else have this problem?

To sum up:
• Except for very fist time it happened it starts up just fine and idles normally.
• Runs fine when starting from cold, only acts up when restarting a hot engine or after driving for a while.

• Lurches forward intermittantly as gas is pressed. No acceleration.

•1994 940 Turbo 133K, regular scheduled maintenance. One small oil leak from rear engine seal. Original turbo unit. Never had a really big problem. Never beeen in a wreck.

• No check engine light or any indicator light at all.

Thanks,

Josh