alil2cul4u

Hey guys, I have a 1990 4Runner 3.0 tonight I was trying to change the fuel filter I got the tank down after hours of frustration and now I cant seem to get it back in place. It keeps hitting the drive shaft.... Could someone please help me! I just came in for the night its freaking cold out tonight!

TIA
Julian

894x4pickup

Make sure you have the metal piece that goes in between the gas tank and the gas tank skid in the rear.

alil2cul4u

Yeah, I remember that... I just cant get the tank up in place. It gets stuck on the drive line and something else on the other side! I'm gonna try again tomorrow. I got to frustrated tonight as I was out there for ~4 hours...

Thanks for the advice though

alil2cul4u

hey, igot it back in place and now it wont turn over what shoul i do? I took the hose off the rear end of the fuel filter and there is gas there... So I dont know whats going on... I hooked it up exactly as it was when I took the old one off!

InternetRoadkill

Don't the 2nd gens have an access panel for changing the fuel pump under the back seat like the 1st gens do?

James Dean

Only if you cut your floor under your seat. Don't tell the wabbit.

alil2cul4u

There is a panel but only for disconnecting the hose and electrical plug! But I still have not been able to figure the thing out! I got it all put back together and its sending fuel to the filter but not the motor?

myyota

If your getting fuel to the filter but not the engine, then try replacing the fuel filter, it could be plugged.

alil2cul4u

I tried that, evidently i wasnt getting fuel to the filter it was just left over in the line... After I changed the filter I tried again without any luck, Im guessing the pump was just faulty. So I'm taking it back out tomorrow!

DeathCougar

iTrader: (23)

Why did you drop the tank in the first place? Just to change the fuel pump sock? Btw that is not the fuel filter.

If it was working before, and now it is not working, there is something else going on. Check fuses, and other potential issues before dropping the tank again. You can also jump B+ and Fp in the diagnostic box, and if the pump is working fuel should pump.

alil2cul4u

I dropped the tank to change the fuel pump... I jumped B+ and Fp today and that didnt help any, does this mean it is the fuel pump? Im taking the tank down again to test the old one and see if that gets it started as the old one hadn't gone out completely. If that gets it going again, I'm off to take the new one back get my money back then going to NAPA!

mt_goat

I bet its the wiring to the pump now. Either outside the tank or inside or the pass through the tank lid. 20 year old wiring and a struggle to get the tank back in, but that's just a guess.

alil2cul4u

the struggle was only because it was geting jammed on the drive shaft... how could i test the wiring? and what exactly does the sending unit do?

mt_goat

Digital multimeter (DMM), check the voltage at the connector. I'd start with the connector outside the tank, see if there is power getting to there. If not, work your way back up line. If so, check the wiring the other direction, I'd probably check the resistance of the positive and neg wires going to the pump through the tank lid at that point.

James Dean

Here is the FSM on the fuel pump. It helped me when mine went out.

http://www.ncttora.com/fsm/1990-1995...e/fuelpump.pdf

alil2cul4u

Thanks James, That is in the FSM i Already downloaded though. It didnt do much help... I don't really understand the wiring diagram. But I have a mechanic on the way... I'm really hoping its not a wiring problem

mt_goat

I decided the wiring on my 93 was a weak point and ran new wiring to the FP. I used the old wiring to trigger a relay which has direct 12 gauge leads to the battery and ground point. Fuel pumps are very voltage dependent, and the tiny wires Toyota used for the FP were probably marginal when new, add on 20 years of deterioration and you have IMHO a weakness in power supply to the FP.

alil2cul4u

Hey, thanks guys i forgot to update this. But I got it going it was that the metal tubing was bent and would make the rubber tube kink when I would hook it up...

Thanks for your guys help
Julian