92 Lumina Engine issue

[Champ982]

Hey I'm having some issues with my 92 Lumina Eurosport (Car) 3.2, all of which happened after 1 year in storage.

What's happening is the engine sputters around 5-700 rpm vibrates heavily, when you hit the gas sometimes it won't go past 2200 rpm somestimes it will go to 4000 and shift, but either way then acceleration is severely diminished. Its not consistent but almost gauranteed to happen every time I drive it. When it's driving normally it drives great you'd never know you were having the problem, as well as it can randomly come out of this problem in mid drive normally. The best time for it not to happen is when I first fire it up in the morning, it will dance between running bad to perfectly. If you try to force it and put the peddle to the meddle to get a really strong kick from the engine which I clearly try to avoid.

What I know;

- Steering rack sensor is broken apparently regulates the idle through a turn. Can't find this part, so I can't replace it yet.
- Started happening after changing a bunch of filters particularily the gas filter.
- Code reader shows "Sensor Failure"
- Not completely certain as I just noticed this recently, when it comes out of the woods when stopped in drive, it feels like the brake releases a bit.

What I've done;

- Brand new battery.
- Changed Throttle position sensor
- Changed Idle-Air control
- Brand new plugs and wires.
- Rebuilt transmission (not because of idle, the hard engine kicks damaged the first one) Still happening after ofcourse
- Cleaned leads off the control module, there was some carbon build up on some of the leads.
- Put a few bottles of fuel delivery system cleaner through the engine


Any suggestions will be tried and added to the list if no success.

[maxwedge]

Werlcome to AF. What is the code in the pcm, have you checked fuel pressure? What is come out of the "woods"?

[Champ982]

Originally Posted by maxwedge

Werlcome to AF. What is the code in the pcm, have you checked fuel pressure? What is come out of the "woods"?

Ty for the welcome,

I have yet to check the fuel pressure. I haven't because when it's sputtering when it decides to stop sputtering it floors it.

The woods are when its sputtering, when it coems out of the woods is when it stops.