Question about 1999 Jeep Cherokee

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No power to fuel and coil - 1999 Jeep Cherokee

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What engine, 4.0Liter? systems vary by engine options.
my 99 had a 4L. (or 2.7L v6?)
what are the over all symptoms?
my guess:
1: wont start.?
2: no engine power, or misfires with OBD2 P0300 codes.?

now 12v DC power to fuel pump or coil means the fuse blew.
check the fuses in the 2 fuse panels,

the 2.7L has 6 COPs, 6 ignition coils
and all run off of the fuse #2 , called, "IG COIL" (cab fuse box)
btw 2:
if the coils are dead, the ECU/PCM cuts all fuel, it just hates a fire.
programming................

Posted on Nov 26, 2013

Testimonial: "there no firer to coil fuel no heater"

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No power going to coil I have changed the ignition switch crank sensor coil I have switched auto shut down relay


What is your vehicle? Assuming you have a Chrysler, check to see if the fuel pump is coming on when you switch the ignition to the on position. Most of the Chrysler's with the auto-shutdown relay system use the same power to energize the fuel pump, ignition coil and fuel injectors. The hot lead to the coil should be the same color wire as the lead to the injectors and fuel pump. If power is present at the pump and injectors, then you should trace from the coil back to where it joins up to everything else. If nothing is powered up, check for bad fuses or a bad connection in the engine fuse block.

Apr 23, 2014 | Cars & Trucks

1 Answer

98 jeep put new crank sensor ' coil pickup' and coil ' i have no power to the fuse block on finder no fire to plugs and dont here fuel pump


No power to fuse block? This may be the problem. Check all your maxi fuses in the power distribution block. I think all the maxi fuses are hot at all times-check if they are getting power, and fuses are good.

Also in the power distribution center is fuse F15- a 30amp fuse for fuel pump relay, and fuse F6- a 15amp fuse, also for the fuel pump wiring. Check that both are good, and have power-F15 is hot at all times. F6 is hot in run or start.
This is the 4.0L inline 6, right? That is the engine diagram I have. The coil signal is from the ECU. Does the check engine light come on with key on, so you know the ECU is powered?

Dec 09, 2013 | 1998 Jeep Cherokee

1 Answer

Cranks but won't start



Trouble Code: P0300

Multiple Cylinder Misfire Detected
Possible Causes:


Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects two or more cylinders Erratic or interrupted CKP or CMP Sensor signals Fuel delivery component fault that affects two or more cylinders (i.e., a contaminated, dirty or sticking fuel injector)


Trouble Code: P0302

Cylinder 1-10 Misfire Detected
Possible Causes:


Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector)


Trouble Code: P0305

Cylinder 1-10 Misfire Detected
Possible Causes:


Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector)


Trouble Code: P0351

Ignition Coil No. 1, 2 or 3 Primary Circuit
Possible Causes:


ASD relay power circuit to the ignition coil is open Ignition Coil No. 1, 2 or 3 primary "driver" circuit open or grounded Ignition Coil No. 1, 2 or 3 is damaged or it has failed


Trouble Code: P0352

Ignition Coil No. 1-8 Primary Circuit
Possible Causes:


ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded


Trouble Code: P0353

Ignition Coil No. 1-8 Primary Circuit
Possible Causes:


ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Ignition coil is damaged or it has failed PCM has failedPCM has failed Ignition system problem (coil or plug) in only one cylinder Ignition system problem (coil or plug) in only one cylinder Ignition system problem (coil or plug) in two or more cylinders Vehicle driven with low fuel pressure or while very low on fuel

Jun 06, 2012 | 2001 Jeep Wrangler

2 Answers

My truck will not start just cranks but will not fire


Air - not likely the problem ! mechanical cable controlled throttle body

Fuel- make sure there is gas in tank! fuel pressure test at the throttle body or rails, if no fuel check power to fuel pump: ignition power to breaker or fuse, relay , power to pump at 3 pin connector near tank/frame rail on drivers side, - if pump is runniig but insufficient pressure, check for mechanical restriction: plugged filter broken or pinched line, plugged pickup tube in tank. if good pressure to rail or body, check ecm : diagnostic codes, fused power, ecm tells injectors when to open, dependent upon several sensor parameter inputs.

Spark- ignition - coil-distributor-ignition module (or coil packs)- wires-plugs-ignition module (signals coil to discharge, mounted beneath distr cap) work backwards from plugs.

Jan 25, 2010 | 2000 Chevrolet Silverado

2 Answers

1997 dodge ram won't start. My fuel pump does not run and coil won't spark. Iv'e checked fuses and relays and they look fine. Could a bad fuel pump cause the asd to kill power to the coil?


First check any ignition/fuel related fuses. Check to make sure you have 12 volts coming into the pump and coil. If nothing to the fuel pump replace the fuel pump relay - if you do have power to the fuel pump then replace the pump. If nothing is coming to the coil it is either an ignition relay or a wiring issue. If you have 12 volts to the coil but no spark then replace the coil.
Also the fuel pump/relay would not kill the coil.

Jan 21, 2010 | 1997 Dodge Ram 1500 Club Cab

1 Answer

Truck just all off a sudden wont start. Put new


MAKE SURE DISTRIBUTOR COIL IS GETTING POWER.IF NOT.CHECK IGNITION FUSE.IF FUSE IS GOOD AND COIL IS GETTING POWER.REMOVE COIL AND CHECK THE COIL PRIMARY RESISTANCE USING A DIGITAL VOLTMETER. IT SHOULD BE 0.1 OHM.SECONDARY RESISTANCE SHOULD BE 5000 TO 25000 OHMS..IF COIL PASS ITS THE IGNITION MODULE.IF COIL FAILS.COIL IS BAD.

Sep 05, 2009 | GMC G2500 Cars & Trucks

1 Answer

No power to fuel pump and no spark jump power to


Spark comes to the plugs, via through the ignition switch ( in the on position) to the primary side of coil. Possibilities ignition switch, distributor cap , rotor, plug wires, coil, control module. If you remove the coil, control module these can be tested at Autozone for free.

Jul 13, 2009 | 1987 Ford Econoline

1 Answer

Jeep Wrangler 1995 coil loses power when fuel pump shuts off!


No, the ignition coil has nothing to do with fuel pump.

Jun 15, 2009 | 1995 Jeep Wrangler

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