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Depends on where it was built for. I think some if not all 94s in California were sequential.
Otherwise most likely, it would be batch fire, up until 1996.
If your truck has the stock motor, and looks stock, it probably is stock. Just look to see if it is MAF or SD, look at air box filter box for MAF sensor.
Pretty sure all batch fire are SD, and all sequential injection are MAF.
Where the air filter box is, there is tubes that then go to the throttle body. On the end closest to the air box, there will be a large sensor, it is Mass Air Flow(MAF).
If there is no sensor, it is Speed Density(SD).
Also, SD has 2 tubes all the way from air box to throttle body, and MAF will have one tube, that splits into 2.
Does the truck run?
No air box, probably not MAF.
If its SD, then there will be a Manifold Absolute Pressure(MAP) sensor. MAP is located to the right of the heater box, on firewall.
Take some pictures of under your hood, and attach them.
is this your turbo truck, if it is it will be hard to tell if PO cant answer, if switched to Mass Air or not, even if MAP sensor is still on firewall Speed Density has MAP on firewall
Mass Air sensor is connected to Air Intake Filter Box
