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Discussion Starter · #1 ·
Hey guys,

as you know i'm swapping or swapped an engine out of a 96 M edition into my 94 LS( just bought a M-editon thread). I know there is a difference in that the 96 is OBD2 and the 94 is OBD1. I got it swapped and everything plugged in, but the fuel pump is not coming on. I drove the car onto the rack before I pull the original motor. Any Ideas.:shrug:
 

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You need to use your original 94 distributor; the wiring is different in the 96. Can't think of anything else. Does the fuel pump run when you connect the FP and GND pins in the diagnostic box?
 

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Discussion Starter · #4 ·
Engine is cranking and I have good spark. I used the 94 distributor and the fuel pump is not running. Both cars were driven into the shop.
 

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Jump the fp and gnd pins as NickR suggested, because that's the only time the fuel pump comes on with the key in the on position, as I understand it. Otherwise, the pump only comes on when you crank the motor. Also, you might want to check your fuel pressure.
 

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Discussion Starter · #6 ·
I got it to fire up. I pulled all the grounds and cleaned them and I also pulled the distributor back out and clean the contacts in the harness. Thanks for all the help.

These engines are a PITA to swap. Before the swap i put in a new water pump, t-belt and tensioners. I had to swap fly wheels(mine is a 5spd). I had to use the 96 exhaust. The exhaust manifolds are different. The EGR valve is different. Vacume lines are alittle different. New valve cover gastkets, plugs and wires. I've got a good 3 days of work in her. Now on to the body shop.
 
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