Why does my Jeep Liberty engine not start?

There are a lot of issues that can cause your Liberty to crank, but not start. The engine needs air, fuel, and a spark in order to run. It is highly likely that if the engine is cranking, but not starting that it has thrown an OBDII code.

Why does my Jeep Cherokee crank but not start?

Re: Cranks but will not start, no PCM function. You still don’t have spark or injector pulse; this should be looked into first. It still could be a bad crank sensor. The crank sensor sends the pulse to the PCM and then it sends the signals to the proper areas like spark, fuel relay, and injector pulse.

What causes the fuel pump to not start?

The fuel pump is running and delivering normal pressure to the engine But, with all that working your engine still will not start. So, the most likely cause, is that the fuel injectors are probably not opening. The (PCM) uses the trigger signal from the crankshaft position sensor; and/or camshaft position sensor to pulse the injectors.

Why does my Jeep Cherokee have no spark?

I have no communication to the computer with a scanner, no check engine light, no 5 v reference, no spark. I have tried to manually pull codes with the key. The dealer says that it does not have an immobilizer by the VIN number. I have power and grounds to the PCM connectors.

Why is the fuel pump on my Jeep not working?

The green/white wire which brings power to the fuel pump module was broken. Runs fine after fixing that. My jeep did the same thing a couple of years ago. And it was driving me nuts because it would just stop running. And not restart for a few minutes. The independent dealer who sold me the Jeep was also at a loss to explain it.

What to do when your fuel pump wont turn on?

You can use a test light to check for power going to the pump. Unplug the connector and touch the light to the green/black wire. Have someone turn the key on, at that time you should see it light up for a couple of seconds. Then have them attempt to crank the motor, it should stay lite while they are spinning it over.

What should I do if my Jeep wont start?

Nothing.. Turns over like a champ but wont fire. The sending guage shows gas in the tank but there does not seem to be more then a dripple of gas from the pressure release valve on the fuel injection rail. That puppy should be shooting out. soooo im not getting fuel to the rail. Any ideas from this forum would be appreciated. im stumped.

How can you tell if your Jeep Liberty fuel pump is going out?

The only way that you are going to know that your Liberty’s fuel pump is going out is that it is no longer providing enough fuel pressure to keep the engine running under a heavy load, or at high-speed. Typically, if you are heading up a hill (or accelerating) the engine may start to feel like it is just running out of steam.

What happens when a Liberty starter goes bad?

When a starter goes bad, they will usually not give you much warning first. Also, if you are stuck somewhere and are trying to start your Liberty, the old beat the starter with a hammer trick is not a wives tale. It really can get that one last start out of it. There are a lot of issues that can cause your Liberty to crank, but not start.

When to know if your fuel pump is bad?

This trouble code detects that the fuel rail/system pressure is too low. Any trouble codes that exist could be a clue. Sometimes when there is low fuel pressure, you may also get an oxygen sensor related trouble code as well. The real issue with diagnosing a bad fuel pump is that it resembles many other vehicular issues in terms of symptoms.

Let sit for 5 to 10 mins then it starts but stumbles when it starts Engine runs fine unless it’s been running, and it’s turned off for a few minutes and they tried to restart. Then it cranks but doesn’t start. Got check engine light, had codes misfire on #1and another cylinder don’t recall which one.

What happens if the starter on a Jeep Liberty is fried?

If the starter is being fried, then the starter has been placed in a postion as a “fusable link”. I venture to say that much of the Liberty’s wiring has been put under tremendous strain from over-voltage, that even if its fixed, then unsafe situations in the wire’s integrity are almost guaranteed.

How long does it take for a Jeep Liberty to start?

The last two days I’ve ran the vehicle in the company parking lot for ten minutes so it won’t die on the road. It starts ok, but runs a little rough. After about five minutes, the Tach goes from 600 rpm (Idle) to 5000 rpm (the engine does not rev up) then to zero. the engine dies.

What’s the problem with my 2002 Jeep Liberty?

After about three years of little problems with my 2002 Liberty, I now have a big one. At about 38,500 mile (out of warranty of course) the engine start dieing. I took it to my dealer and they replaced the Crank Sensor.

Why does my 2005 Jeep Liberty not start?

My 2005 Jeep Liberty decides after driving around a bit not to start. Battery is fine. And it will start again — so far — after 20+ minutes; but I wonder if one time it won’t.

When did my 2012 Jeep Liberty not start?

I have a 2012 Jeep Liberty and this started close to 2 years ago now. Randomly would not start every once in a while (it would crank but not start). Went to goodyear, they replaced my throttle body, did a bunch of other work (close to $1,000) and then 6 months later it started again.

What to do if your Jeep won’t start?

Jeep will start and run fine, then once in a while when turning off it won’t strt. Engine cranks, but won’t actually start. Leave it sit for half hour or so and it will start right up!

Where is the ECU on a Jeep Liberty?

The ECU is located on the fender by the right side hood hinge. Spliced the wire and wallah it starts and runs normally!!!! Jeep will start and run fine, then once in a while when turning off it won’t strt. Engine cranks, but won’t actually start. Leave it sit for half hour or so and it will start right up!

Where is the fuel pump connector on a jeep?

Unplug the fuel pump connector at the back of the fuel tank. It will be easy to find and has four wires in the connector. Use a circuit tester and test the harness side for power as your helper turns the key on and off.

What happens when the fuel pump goes out on a Jeep Liberty?

There are physical signs that you can feel when your Liberty’s fuel pump is going out. Before taking anything apart, check to see if your engine’s computer has any trouble codes saved in it. The engine may throw a P0087 trouble code. This trouble code detects that the fuel rail/system pressure is too low.

How to reset your Jeep engine control module?

3- Once the time has passed you should now turn the headlights “on” and “off” twice to drain the Engine Control Module from any remaining power. 4- Now plug back in the negative terminal and your Jeep ECM should now be reset. To finish off this post , here are a couple of things you should keep in mind.

How much refrigerant is in a Jeep Grand Cherokee?

Jeep refrigerant and oil capacity charts Year Model Refrigerant Refrigerant Oil GRAND CHEROKEE 2002-2004 All Engines R134a 27.00 PAG 46 2000-2001 All Engines R134a 24.00 PAG 100 1998-1999 All Engines R134a 26.00 PAG 100

What’s the problem with 4 cylinder Jeep Liberty?

I actually found the problem. In both the 4 cylinder and 6 cylinder Jeeps, the valve cover gaskets have a short life and as they encircle the spark plugs, oils leaks down on them and shorts them out. Gasket changed, problem solved.

What was the problem with my 06 Liberty?

My 06 liberty was running fine it seemed ! It been running 30 minutes with no problem.it sat idling while i put the fam in the car,and we started driving.about a half mile away i came to a stop sign,when i went to take off,it choked bad but then it caugh n was still running and i went ! 2 blocks later ? It stalled !

What to do if your Jeep Liberty has a cylinder misfire?

Pulled the fuel rail and checked all of the fuel injectors. Fixed a minor fuel leak in the rail on the drives side, and changed all o-rings on the injectors. Even swapped the drives and passengers injectors to see if the problem would follow. Checked all connectors for corrosion, no problems there.

Where is cylinder 6 on a Jeep Liberty?

An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the engine. The P0306 trouble code will trigger the Liberty’s service engine soon light. The vehicle itself may begin to run rough.

What causes cylinder 6 on Jeep Liberty to misfire?

The engine is also not firing all of the fuel, so raw fuel is also passing through Cylinder 6 into the exhaust. Mileage may suffer as well when your Liberty has P0306 as well.

Jeep will start and run fine, then once in a while when turning off it won’t strt. Engine cranks, but won’t actually start. Leave it sit for half hour or so and it will start right up!

What does it mean when your Jeep Liberty won’t start?

The first and most common is when it won’t turn over. This just means that the engine doesn’t move when you turn the key. The second way that your Liberty won’t start is when the engine turns when you engage the starter, but it won’t fire and run on its own.

What happens when there is no spark in the engine?

When there is no spark, the engine will not start. You’ll probably have a misfire related code such as P0300, P0301, etc….. Ignition issues can be caused by many things, including bad spark plugs, bad coil packs, bad plug wires, computer issues, and more.

What to do if your Jeep Liberty has no crank?

4. Tried Neutral safety switch by moving through from Park to Neutral while turning ignition – No change. 5. Tried both keys. 6. When Key is in the “On” position.

What is the condition of my Jeep Liberty?

When the key is turned to the “Start” there is absolutely nothing. No clicking from solenoid or attempt to do anything. 1. Battery has been ruled out. Swapped battery from my car and condition is the same. 2. Cables are good. 3. BCM is good. Lights, Horn, Radio, Key Fob. etc etc working normally. 4.

4. Tried Neutral safety switch by moving through from Park to Neutral while turning ignition – No change. 5. Tried both keys. 6. When Key is in the “On” position.

Can a crank and cam sensor be replaced?

I replaced both the cam and crank sensor and car still will not start but if I unplug the crank sensor it starts up and runs like crap. I can not figure out what to do next. My car has 91000 miles. My car has an automatic transmission. You should check to see if your vehicle has jumped timing.

Can you replace the starter on a 2005 Jeep Liberty?

This gave buyers the opportunity to have the look of the Wrangler without the unforgiving ride. Replacing the starter in the 2005 Liberty with a 3.7-liter engine is a straightforward task that most weekend-warrior mechanics can perform, if the Liberty is two-wheel drive.

Are there any problems with the Jeep Liberty 3.7 engine?

According to one leading engine builder, Chrysler’s 3.7-liter engine has some fatal flaws. The engine builder also adds that if not attended to, there could be some serious as well as catastrophic vehicle failures just after the warranty expires.

When did the second generation Jeep Liberty come out?

Second generation KK (2008–2012) The Jeep Liberty received a complete redesign for the 2008 model year with a more boxy and off-road look, like that of the 2007 Dodge Nitro, the latter of which lasted until its final production in December 2011. The 2008 Liberty debuted at the 2007 New York International Auto Show.

What was the fuel problem on a 2005 Jeep Liberty?

Jeep Liberty crd. Engine was stalling on startup. Odb code came on after a month of this “fuel leak severe”. it was loosing prime while sitting due to air leaking in. Found fuel leak on pre-heater connector to fuel water separator housing. Found some burnt plastic where connector was, clearly it got hot/fire.

What causes a bad or failing blower motor relay?

Blown fuses. One of the first symptoms of a bad or failing AC blower motor relay is a blown AC blower motor relay circuit fuse. If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current…

What happens if you have a bad blower motor?

The blower motor is the component responsible for pushing air through the vents of your vehicle’s heating and air conditioning systems. Without it, the AC system will not be able to circulate any heated or cooled air.

Why is the air blower on my Jeep not working?

I will start the Jeep and the air blows fine, then without rhyme or reason it completely stops (there is no specific duration between work/failure). Depending on the length of the trip, it may come back on again. I replaced the blower motor resistor and I thought that fixed the problem, but unfortunately it did not.

What are common reasons my Jeep Liberty has heater problems?

What are common reasons my Jeep Liberty has heater problems? While there are a variety of reasons your Jeep Liberty heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.

Where is the blower connector on a jeep?

The blower motor sits right next to the resistor or controller (resistor is for manual AC, controller is for automatic AC system), so the connector can be found on the blower motor itself. Since the state of the blower changes after switching ignition off/on, the problem can be inside the AC control panel.

What to do when your car won’t start?

Correcting most no-start problems usually involves replacing the alternator, starter or battery, cleaning connections, ignition system repairs, or fuel system repairs. But because there are so many potential causes, the diagnosis is key to understanding how expensive the repair will be. When a vehicle doesn’t start it can be for many reasons.

Why does my Toyota Tacoma engine not start?

When the computer senses the engine is out of time, it will turn on the check engine light, and the engine may start and stall, or fail to start at all. If the engine runs, it w…

Are there any problems with the Jeep Liberty?

The Liberty was fairly popular in its day, but it was not without its problems as well. If you’re interested in picking up a used Liberty for yourself, it’s good to be familiar with the problems that the various model years were faced with.

How does the fuel gauge on a jeep work?

The fuel gauge on your Jeep is powered by the fuel sensor relay. If the fuel gauge in your Jeep stops working, the relay has gone bad and needs to be replaced. The fuel sensor relay is responsible for powering the sensors that, in turn, relay information to your fuel gauge.

Where is the fuel sensor relay on a Jeep Cherokee?

Lift your Jeep’s hood and remove the negative battery cable. If your model Jeep has them, unclasp the two clamps that hold the relay panel lid on. Do this by hand. The main relay panel is located near the battery. Pull the relay panel lid off. Pull out the old fuel sensor relay.

Why does my Jeep Wrangler not start unless on the gas?

I already tried letting it re-learn it’s idle since the computer was reset. But she’ll crank and crank but won’t start unless I have the throttle wide open. Once she starts, she won’t idle on her own..I have to keep my foot on the gas. But this doesn’t happen every time, only when cold.

Why does my Jeep turn over but wont fire?

Either you have a bad key, bad antenna ring in the column, a bad SKIM module, or bad wiring somewhere in between these components. The Jeep will start then stall a few times, then the PCM will be forced to go into “sleep” mode until the problem is fixed.

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