mystery 3.2 problem - please help if you have 3.2 knowledge

[1fastredsc]

The air flow meter does two things. It detects air flow for relative load detection and air temp for relative air density. Both of these (especially the first) affect your fuel delivery greatly. If you get too much fuel in hot weather, then usually you'll get a just right mixture during cold whether. The o2 idea isn't bad either, the computer is supposed to adjust to 14.7:1 under circumstances other than WOT. Although it adjusts based off of the base input of the air flow meter, and that altered adjustment by the o2 is'nt very big, so if your flow meter is way off your screwed anyway. The only way to find out your air flow meter's setting is by disconnecting your o2 (prevents correction) and use a sniffer in the exhaust. To adjust it, there's a by pass tunnel on the side of the air flow body (a lot like a throttle bodies idle screw) that's controlled by a plug with a small allen socket head. Screwing it in goes richer, screwing out goes leaner.

[crashr]

Reviving an old thread.

I have a very similar issue.

For the first time this weekend, after driving my car for about an hour+, when I was cruising in 5th on the highway at about 3500rpm, my car woould momentarily lose power, and a second or two later it would come back. It felt like the injectors shut off or the fuel pump shut off. It did it 2 or 3 times over the weekend but only after running the car for about an hour. The one time, instead of taking my foot off the gas i just kept my foot down and the car hesitated and jerked slightly but then continued to run fine.

I have a brand new fuel pump, DME, and speed and reference sensors in there so I was hoping to rule out those.

My thought is it may be a failing Darlington transistor in the DME that controls either the fuel pump or the injectors, which is acting up when the box warms up enough. Does this make sense? Any other thoughts on what could be causing this?

It may be a separate issue, but the other problem which recently started about the same time was, if I start the car for the first time in more than a day it sometimes just turns over. I need to do this a few times until it fires up. When the car is warm, or has been used in the last day it will start right up. Not sure if the two issues could somehow be related?