KatahGii

Ok so I’ve been trying to figure out why my fuel pump isn’t getting power I tested my fuel pump and it it working. Now I’m moving on to testing each connected to see where the power is dropping. This is the connector under the flooring that goes to under the bed. It’s got 6 wires colored wires. Anyone know where I can find a pin out so I can test the wires to the fuel pump?

Well I feel stupid now *facepalm. I’ll check that out now thanks!

Are these the connectors in the diagram?

I have my leads in when my friend turns the key so I’m reading from before the key is turned and then to the 3rd click of the key so right before you turn the key to start the engine.

I’m checking for power at the harness side of the pump connector. what are your recommendations on checking for power and checking if the pump is functional?

No no power. I assumed it was the firing to the pump but it all looks good someone told me to redo the ground and it might work so I did and still no dice. I didn’t check the pump I’m kinda just assuming since it was brand new it would be good.

Ok so I have replaced the fuel pump and redone the ground and it still won’t work. It’s a brand new pump and the relay is kicking on. And I can’t figure out what it is. The wiring in the cab looks brand new. I followed it as far into the foot well as I could see. Here is a pic of my fuse box maybe something is missing I can’t see and these 4 wires that aren’t connected to anything. Idk where they go to maybe someone can help.

So I’m trying to trace wires from the fuel pump to the engine bay. And I noticed that it appears that the wires go into the floor of the cab. Does anyone know how to access these wires?

Ok so I have an 86 and The fuel pump isn’t kicking on. I used a multimeter to test the wiring harness that the fuel pump plugs into and when I ground it on the frame and stick the positive lead into the plug at the orange wire I get fluctuated reading it’s moving so fast and it ranges from .0L .44v 199mv any ideas? here is a link to the video I took https://mega.nz/#!V1AzyIIJ!cWALltKOEhTItaV1nF0iOskqNpIZumBKs47jeW_JNAg

Ok so the fuel pump is getting power but this is happening any ideas? link is to video https://mega.nz/#!V1AzyIIJ!cWALltKOEhTItaV1nF0iOskqNpIZumBKs47jeW_JNAg

Thanks for this it’ll really help when I get the stuff to redo the ground

Where is the buzzer wires. I want it gone in general lol

Ok I’ll end up figuring out how to post a video. And it’s not a hum it’s a full on buzz like the warning that your key is in the ignition.

I didn’t do a proper spark test I assume since it runs on starting fluid that the spark is good. And I can’t hear the pump. I hear a click from the passenger side in the cab. I assume that the fuel pump is good because it came with the sending unit. Also I checked to se that power is going to the unit and used a multimeter on the plug and it was getting power. I assume that I can’t hear it because the hum of the key being in the ignition.

No I didn’t. Hmm idk where exactly that is.

Ok I’ve been working on my ‘86 2.5L 4cyl TBI for a while.. I bought it not running. I replaced the whole sending unit, fuel filter, spark plugs and in the process required a whole new tank... I put gas in it went to start and it still would crank but not turn over. I can keep it running if I have the key held in the start position and spray starting fluid in the TBI. I popped the top off the TBI and tried to start it and no fuel was coming from anywhere. Any ideas?

What are the lengths of the #9 and #11 straps. I bought the straps from autozone and I got a 29.5” and a 32.5” strap (idk why autozone only sells sets of 2 but I tried putting them on since I got the tank out and the new one. But I couldn’t get either to fit in the back same size tank but the straps were both too short.

Alright thanks. I was just trying to make sure because The old one is crumbling from rust so I was going to rhino line the outside of this new one before putting it in

How many straps did yours have mine has 3 I’m just trying to make sure I got the right tank

I already bought the tank when I got it in the mail was when I questioned myself. The tank in the Jeep had 3 straps already

Yes sorry I mistyped I’m at work :)

I have a 1986 Jeep Comanche X I don’t know the bed length. I need to replace the gas tank and I ordered the only one autozone had and it’s the 23gal. If mine came with the 18 gal will this 23gal fit? edit: fuel tank size

So I looked at it again in daylight and it seems to be wedged in between the rear drive shaft and frame is that common?

I didn’t thread them through the frame. I’ll thread those through but the whole tank is up in the air not just a side of it. So that’s why I’m wondering

So I’m trying to replace the gas tank and fuel pump assembly I had a friend helping that did it on his xj and we disconnected all the fuel lines, we disconnected the filler now hoses from the filler nozzle and we also disconnected the wires for the fuel pump. We struggled to get the plastic cover off the bottom of the tank since I have 3 straps holding it on and the bolts were rusted on and stripped so we took bolt cutters and got the straps off and completely removed from the vehicle. And it still won’t drop... is there anything else that I’m missing that could hold an 18 gal tank with about 5 gal of fuel in it? I need help!