Everything. I replaced everything. This is the worst motor that was ever created.
- Intake manifold gasket
- Timing chain
- Starter
- Alternator
- Rear plugs filled with water and fouled out
- Gas lines
- Gas tank brackets
- Fuel pump
- Some O ring on the back of the motor leaked
- MAF sensor
Bad buy. Skip the "performance" model and get the 3.1 in the regular Lumina. I had to borrow my dad's Cutlass with the 3.1 while this thing was worked on multiple times, and I didn't lose that much power.
I was stalled and left for dead everywhere I went. I never drove it out of a 30 minute range of my house, and never felt like it would start again. I put more money into fixing it then I did to buy it.
Got a great "deal" from the dealership that my dad worked at. It looked great (he was a body-man not mechanic, dang it!) and was quick for it's size. It had very aggressive and intimidating styling, but it was a heavy vehicle and very unreliable.
The motor had to be loosened off of the motor mounts and rocked forward just to change the spark plugs. Not cheap. Like I said, save it and get the more reliable 3.1 motor instead.
The difference is horse power! First gen. motors always have trouble. I'd put any Z34 against any 3.1 and eat!
3.1 = 135hp, 32v 3.4 = 210hp stock, and I'm pushing 260 modified!!
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