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1992 Toyota Pickup Questions

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I have a 92 Toyota 4 X4 pickup truck V6 3.0 EFI engine just replace the engine wire harness the check engine light came on and I have no power it starts up and runs fine but when in gear has no power check all vacuum hoses can't find anything wrong help please
I am about 40 miles away from home. Is there any way I can get it started without going to mechanic. Don't know anything about fixing cars
Replaced the TPS, MAFS, and the fuel pump truck will start but not run
Or is there a flap under the air filter inside the air cleaner assembly?
Wondering where I should listen for the fuel pump to activate, I can't here it from inside the pickup? At the fuel tank or open the hood and listen at the engine?
Have tried all of these, new timing belt, water pump, coil, ignitor, plugs, plug wires, fuel pump & assembly bracket, fuel filter, distributor, used FRS, VMAF, O2 sensory. Have cleaned thottle body, cold start injection. Only thing left is the cold start timing switch, coolant sensory and EGR VSV & vacuum regulator.
Won't start until it cools down. Starts and runs fine. If I keep the hood up when it's parked, it will start and run. If I can get it moving , it will run rough for a few minutes, then it runs fine. It's getting a little more difficult to start in the morning than it used to.
After a few tries the engine will slowly crank over and then finally start. It runs fantastic after it gets goins, I only have a problem when I'm trying to start it.
Ive been mech for 40 yrs but this one is a tuff one. I replaced fuel pump&filter and it starts and stalls in 5 sec. Its fuel injected and it has a starter injector which adds xtra gas at start up. How do you test all injectors with ohm meter and then test them with a stethascope. supposed to hear them humming. Is this correct? Do you know what else problem could be. I also replaced the regulator with a adjustable pressur regulator. Do you know these aanswers of good tests to make on injectors. Do you know what other problems could do this to the engine? Thank you. Please get back to me.
In diagnostic box I Have power at B+ when switch is on,i have power at FP when cranking, when I run jump wire to each pump doesnt run. I ran a wire straight to the pump from the battery and the pump runs and truck starts. I have checked EFI fuse and IGN fuse both are good, EFI main relay clicks when ignition is turned on.
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