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1999 jeep fuel injector wiring diagram - Cars & Trucks

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: wiring diagram 2007 malibu

what engine???? there are three

Posted on Sep 25, 2008

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SOURCE: diagram to remove and install a fuel pump on 1999 jeep grand cherokee laredo

I apologize for not being able to provide a diagram, and it's been a while since I've replaced a fuel pump in a Jeep like yours, however the fuel pump for that vehicle is located within the fuel tank. You will typically disconnect power from the battery,relieve the pressure from the fuel rail to the injectors. In most cases the test port on the fuel rail has a schrader valve "valve core" like a tire valve, which utilizing a rag to absorb excess fuel you can depress to relieve pressure. You will then have to detach the fuel filler tube and vent tube at the filler neck. With a floor jack supporting the tank ,there should be a couple of bolts holding either two straps around the tank or a large cover that covers and supports the tank itself ,that will need removal. Once you have removed these and you should be able to access the top of the tank. Bear in mind you don't put the fuel pump/sending unit wiring harness or the fuel and vent tubing under too much strain as you lower the tank. you should have enough room to disconnect this wiring and fuel tubing. the tubing will probably have a quick disconnect setup where it attaches to the pump assembly. Once you have the tank on the ground take a suitable (non sparking drift and hammer) to tap the retaining ring that holds the pump in the tank, around the openig to release it. The pump assembly will be spring loaded and the top may pop up out of the tank. Just be sure to protect yourself from any fuel that might spray up. To reinstall can be a slight chore sometimes, as the assembly is spring loaded. It usually goes in with just a slight amount of effort though. Remember to replace the fuel sock on the pump and o-ring seal around the top of the opening. You can purchase just the electric pump, but I'd recommend replacing the whole fuel pump assembly. It will cost more in parts, but longer part warranty and lesser chance of further damaging the assembly are the benefits. Naturally installation is the reverse of removal. I'd recommend a new fuel filter as well, or shortly thereafter. Chrysler factory replacement units recommend draining all the old fuel from the tank and replacing with new fuel (never done that, and with the price of gas, probably won't start) I have never seen an adverse effect from not doing so. I hope this posting has helped.

Posted on Nov 13, 2008

  • 233 Answers

SOURCE: 1994 toyota 22re 4x4 pickup fuel injector wiring diagram

the color of the plastic plug does not matter... You will have two injector plugs with white/red and yellow wires - those two go to cyl#'s 1 and 3.
the other two plugs will have white and blur wires.. those two plugs go to injectors # 2 and 4.

Posted on Jan 14, 2009

  • 710 Answers

SOURCE: 91 oldsmobile cutlass supreme 2.3 quad 4 fuel injector diagram


Posted on May 01, 2009

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SOURCE: 1999 Jeep Grand Cherokee Larado wont start.

If computer sees no crank sensor signal it shuts down pulses to the injectors. But, you bring something new into the mix. Make sure fender grounding is good so the relay can operate properly and make sure power going to it is not restricted by a loose or dirty contact on the power side.

Posted on Oct 23, 2009

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1 Answer

I have a 1999 Jeep Grand Cherokee limited,V8 Quadra-trac which dies on the road; dash gauges drop; "no key" lite displays on dash. Restarts after cools. Two codes P 0443 and 0308 are showing? help

code p 0443 refers to evaporative emission (EVAP) canister purge valve ---circuit malfunction====causes ---wiring--- EVAP canister purge valve ---ECM
code p0308 refers to cylinder 8 ---misfire detected ====causes ---engine mechanical fault ---wiring----ignition/ fuel system--- injector---ECT/MAF sensor---ECM
I am thinking here that it restarts , not after cooling , but after the vacuum in the fuel tank has lessened and allowed fuel to be pumped to the injectors and the fuel pressure is re-established
if that is the case then a weak injector or partially blocked injector will misfire under those conditions
I would fix the purge valve so that the tank vents properly and the rest may go away

Feb 18, 2017 | 1999 Jeep Grand Cherokee Limited

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Why i dont have injector pulse on 3 injectors?


Jan 21, 2016 | 1999 Plymouth Breeze

1 Answer

Won't start. Where can I get a wiring diagram?

Haynes do a manual which contains wiring diagrams.

Oct 11, 2015 | 1999 Saab 9-3

1 Answer

Need to know the colours and order of the injector wires on a 1999 jeep grand Cherokee Laredo with a 4.0 straight six

Find it in the workshop repair manual wiring diagram . If you don't have a manual you may be able to get a page print out from a near by repair shop.

Nov 30, 2014 | 1996 Jeep Grand Cherokee

1 Answer

Replacing Fuel Injectors

there is a 100s of pages for electrics in the FSM>
or at
but you must know what engine you have first.

what kind of diagram. there are many, mech. electrical, , assemble, etc.
the injectors have a common 12vdc power feed.
then each injector is fired with a single wire from PCM to each injector
this is done using a power transistor in the PCM.
it acts as a switch grounding the injector for say 5/1000 of a second
and it squirts.

Mar 22, 2014 | 2002 Jeep Liberty

1 Answer

Wiring diagram

Every year vehicles, wiring changes , check for spark,
high enough fuel pressure and alt the sensor (resistance with a ohm meter),

Jan 17, 2014 | 1999 Chevrolet 3500

1 Answer

1999 ranger wont start

If that was my vehicle I would not have changed one part

I would have gotten out my wiring diagrams & walked thru a
logical sequence of testing what I had & didn't have, as far
as crank sensor output,fuel pressure,injector pulse,etc

Seeing a how pcm's seldom fail ,your just throwing parts at it
& not testing a thing

You need the wiring diagrams to see & learn how the various
systems work

You can actually trigger injectors,coils,relays,etc if you can
use diagrams, test light,meter & jumper wires properly,otherwise
you need professional help

Jan 08, 2013 | 1999 Ford Ranger SuperCab

1 Answer

On my 1999 jeep cherokee i change spark plugs and wires but number three cylinder still not firing consistently what could it be

Could spark, no pulse to the fuel injector, no fuel out of the injector, bad compression due to poor rings or a bad valve, bad cam lobe, or lifter.

Jul 15, 2011 | 1999 Jeep Grand Cherokee

1 Answer

2004 Jeep G Cherokee diagnostic code open injector

It could be a faulty pcm or wiring as you stated in you post. the pcm pulses a ground to the injector circuit allowing the solenoid in the injector to activate momentarily are inject fuel into the intake. if you give me the engine size. V8 4.7L or strait 6 cylinder 4.0L and i will post the proper wiring diagram for the fuel injectors to help you out with your battle

Jan 09, 2009 | 2004 Jeep Grand Cherokee

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