We thank you for your visit to our website. So what we did is create our own wiring diagram. Shipping to Alaska and Hawaii will require an additional charge. You'll see it on the item page as a Vendor Handling fee, and it will show up in the cart below the item s you're ordering. ExtremeTerrain provides Jeep and Toyota enthusiasts with the opportunity to buy the best Jeep Wrangler and Toyota Tacoma parts at one trustworthy location. I am curious to know. Btw aaronmcd had tried swapping relays, did you do that? They are not expensive and should be at your parts store.
The wires change color when they go thru plugs. There are various the reason why you are interested in information about 1990 jeep yj engine wire harness, but certainly, you are looking for new ideas for your needs. If current is making it across fuse , now check terminal 85 in fuel pump relay. Really , best of luck. The relay is good and there's power on the hot side of the relay when key is on, but the wire color there is different, so I suspect it doesn't just go directly to the pump.
I'm guessing that's what is wrong with this one. I would , hate pulling tanks down , always get gas on me! If you have lost access to your email, can you try an email change rqeuest here: A good friend's wife asked me to look at his Jeep about 6 months after he died of a brain tumor, and try to figure out why it wouldn't run. Wiring diagrams are made up of a couple of things: symbols that signify the ingredients within circuitlines and lines which represent the relations between them. Best of luck to you , post back when you can the results and if further assistance is needed to changing pump. Ensure you have battery voltage at terminal 1. We found this on the internet sources and we suppose this can be one of the awesome content for reference. Anybody have a wiring diagram? Let us know how it goes , if all it is , is just electrical , it will be that much easier.
Truck freight and oversize charges still apply unless otherwise noted, and can only be shipped to the lower 48 States. Will take a look again tonite. She was a little bit surprised mad to see the Jeep in t. Any idea which of those wires is the ground so I can eliminate that first off? Lps fuse to supply power to the fuel pump relay. You can also find other images like wiring diagram, parts diagram, replacement parts, electrical diagram, repair manuals, engine diagram, engine scheme, wiring harness, fuse box, vacuum diagram, timing belt, timing chain, brakes diagram, transmission diagram, and engine problems. Double check for the initial 2 sec power at key on and power while cranking.
All electrical components used in a specific system are shown on one diagram. You should find this close to the fuel tank , usually near the fuel lines on the fuel filter. A wiring diagram is a schematic that utilizes abstract reflective symbols to exhibit all the interconnections of components at an exceedingly system. Obviously , current is not making to fuel pump harness at tank or engine would start. If you can make a fused jumper wire , after you change the filter , see if you can get a fuel pressure reading at the fuel rail. There should be 4 wires going to the fuel pump.
But it still leads to pcm or auto shutdown relay that turn on the fuel pump relay. Do not forget to share and love our reference to help further develop our website. I'd bet on it being one of those relays but, we all have been fooled at least once!!! For full shipping details please view our Your vehicle needs a steady stream of air and gas in order to conquer difficult unpaved terrain. I'd bet on it being one of those relays but, we all have been fooled at least once!!! Have you read about our new blue star program? Password: Confirm Password: Email Address Please enter a valid email address for yourself. Any ideas would greatly be appreciated.
Go to for a good, informative acticle on your type of problem. There is a ground and sending unit wires , should be an orange wire. When the key is turned on , you should be able to read voltage at this wire as the pump goes on to pressurize the system for starting. Remember that when the key is turned to on the fuel pump relay is only powered for 2 seconds to prime the system then it is turned off. Running down the road one day and instantly lost power to fuel pump.
But first , with everything assembled , fuel pump harness ,etc. This is actually the 3rd one I've put into the Jeep in the last 2 months. Thank You for visiting our website. Jeep Fuel Pump Diagram » This is images about jeep fuel pump diagram posted by Ella Brouillard in Jeep category on Feb 27, 2019. We determined this on the web sources and we think this can be one of the wonderful material for reference. Free Shipping Offers are for Standard Ground Delivery Service and are only valid for shipping addresses within the 48 contiguous United States.
Its good you checked the fuse and relay , but ultimately , is power reaching the fuel pump? It's one of the previous answers I gave you. Could be a dead relay. I've narrowed it down to the wiring before the fuel pump. If any one of these vital components fails, your vehicle may not run. I don't like to use the word failure , so I won't.
The sending unit uses resistance to work, so the sending unit will not work if grounded. In addition, all , components, and modules are shown in the at rest position with the doors closed and the key removed from the ignition. Also check fuse 21 in power dist box, the 96 is wired a little different and this may be closer to that. To cut to chase I know you want to get this done , see if a buddy has a couple of known good relays lying around , to avoid having having to buy some until you know for sure if one or both are bad. Do not forget to share and love our reference to help further develop our website. Please scroll down to view more images. Here you will find detail explanation, illustration and description of each electrical system components, troubleshooting procedures and clear wiring diagram harness and schematics to make the troubleshooting easier.