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to go along with my trany post my 94 with about 112K sitting at stop signs after driving in town. the engine whats to load up. If I put it into nutral it goes to about 1500 rpm for a few seconds then it goes back to nomral. in the past I have ran the same brand of gas and it ran fine. but the other day I filled up with a cheaper 92 gas and now it runs like this. thanks you guys are helpfull
From: 1994 LT1 Coupe 6-speed with FX3 & 2000 LS1 Vert 6-Speed with F45 Hunterdon County, NJ
maybe you got a bad tank of gas (water/etc).
consider adding a bottle of dry gas (techron would work too), to a full tank of the better stuff, and next time (assuming this fixes it), try the 92 again.
One thing I always do it NEVER get gas when I see a tanker in or leaving from the station (in fact in I think in some state (NY?) they are not allowed to pump gas for a certain time period after deliveries.
Maybe you got your gas too close to a tanker stirring up all the water/etc in the storage tank.