Why is my Jeep running rough after warm up?

Rough Idle and Running After Warm Up. Rough idle and running after warm up. I’ve got a Jeep Grand Cherokee 4.7 v8 that has suddenly developed a problem that makes the Jeep idle rough and run bad like it is missing or starved of fuel or something.

Are there any problems with the Jeep 4.7 engine?

For many years, 4.7 engines have been able to provide excellent satisfaction to a large number of users. However, not all that glitters are gold. In this case, we will refer to the most common Jeep 4.7 engine problems that are usually suffered. Our goal here is not to focus on the Jeep criticism.

Why does my Jeep WK2 surge while driving?

It mainly did it going up hill or at around 40 mph at 1300 rpms. Just like the WK2 guys with the 3.6 engine. They are experiencing something similar with having to adjust the way they drive due to lack if power and not so good tuning. It’s going to surge/buck regardless what you do because of lack of power and tunning.

What are the most common 4.7 engine problems?

However, not all that glitters are gold. In this case, we will refer to the most common Jeep 4.7 engine problems that are usually suffered. Our goal here is not to focus on the Jeep criticism. Beyond this, we will try to provide the best information to find effective solutions.

Why does my Jeep Cherokee idle rough when the engine idles?

Had the same problem until this morning on my 2001 Grand Cherokee Laredo. Valve cover seal was leaking oil onto the ignition coil which shorted out the #4 coil. The coil is one continuous strip that connects to all your spark plugs. When it warmed up was fine; cold it wasn’t.

Why does my Jeep have a bad engine?

In this case, a bad spark plug, a crack in a part of the engine, a lack of oil change, or lack of water in the cooling system, could be the first cause. Each of these bad conditions will damage the next system to which they are connected. That is why the same problem easily generates additional ones.

What causes a Jeep Grand Cherokee to idle rough?

Here are the most common problems that would cause a Jeep Grand Cherokee to idle rough: Here are the main components of the ignition system, as well as what would cause them to make your Grand Cherokee idle roughly.

What to do if your Jeep Cherokee overheats?

An oil change could be just the thing your Cherokee needs to chill out. Draining old oil, and refilling it with fresh oil, plus changing the oil filter will make it run better. But if the oil level is too low, you will definitely experience overheating. 6.

Why does my Jeep Cherokee have too much coolant?

When the thermostat is stuck open, the vehicle will be getting too much coolant. On the other hand, if it is stuck in the closed position, the radiator will not be getting any coolant at all. If you do end up replacing the thermostat, make sure the new part is an exact match to your make and model of Cherokee.

What does rough idle mean on a Jeep Cherokee?

The rough idle is a chug-chug-chug. It reminds me of a 5.0 I had that was only running on 7 cylinders. Ran fine, but idled like crapola! It does not jump all over the tach. Stays pretty steady, but that chug-chug-chug-is really noticeable at the rear end of the jeep.

Why is my Jeep Cherokee rough at a stop light?

Filled radiator with antifreeze, now isn’t running hot, but sitting at a stop light in drive, bad vibration, but in park or driving down the road, nothing. Also, the more coolant I put in the radiator while jeep is running, the rougher it sounds.

How old is Jeep Cherokee 4.0L engine?

It stalled out twice on Monday. Yesterday, the rpm dropped to less than 200; was going to stall, but it raced up to 1000 rpm and seemed to settle down. The 4.0L is still a baby. The engine only had 10 000 miles on it when I got it and it will be 2 years old next month.

What causes random stalling on a Jeep Wrangler?

There are 2x bolts sticking up presses into the harness creating random shorts and misses. No code will appear either. Signs of a failing Fuel pump are, but not limited to: A weak fuel pump with low pressure results in your engine not getting the correct fuel to air mixture it needs to power the vehicle.

Why does my Jeep Grand Cherokee Run rough?

I’ve got a Jeep Grand Cherokee 4.7 v8 that has suddenly developed a problem that makes the Jeep idle rough and run bad like it is missing or starved of fuel or something. On a cold start, where the car has been sat for some time the car will crank and start straight away without any problem. It will rev up on start and settle down as normal.

Why does my Jeep Cherokee shut off while driving?

Insufficient Crimp In A Wiring Harness – This is exactly what is happening to our Jeeps, yet Jeep will do nothing about it. Read reviews of repair shops in your area.

Why does my car run rough after warm up?

But, (and here is the problem) once the engine starts to warm up a bit and the temperature needle starts to climb (gauge says 40) the revs suddenly drop off to around 500 from around 800 and the engine starts to tick over rough and run rough. Revving the engine hard doesn’t clear it.

Why did my Jeep Cherokee shut off at a red light?

Yesterday I was driving my 2016 CHEROKEE LATITUDE 4X4 & was stopped at a red light & the car shut off & an error message came up on the screen to put the car in park & restart! It was startling to me to happen in traffic & cars were behind me so it took me a few minutes to register what was going on & try to figure out why.

Is the Jeep Grand Cherokee a rough idle?

I have a 1988 jeep cherokee n it has a rough idle n a miss. It starts up fine n sometimes the rpms well stay at 3000 rpms. I sometimes have to turn the engine off n back on for the rpms to drop down to abt 1000.

How many times can you turn on the engine on a Jeep Grand Cherokee?

You can (on my jeep at least ) turn the key to the on position 3 times without turning the engine over ( accessory position before it cranks over ) and leave it there on the third turn of key. It will display any error codes on your digital display where your miles are. youtube link https://www.youtube.com/watch?v=LV4-3o1lsN0

How to run rough and rich in a Jeep Wrangler?

5) with one hand near injector 2 and one aound injector 5 pull back with constant pressure making sure not to bend or damage the rail. It should be firmly secured but not too crazy. If its not coming off safely try pulling on each injector individually the only thing holding them on at this point is the lower o-rings.

What should I use to clean the rail on my Jeep Wrangler?

2) flush the rail with straight seafoam or some of your seafoam gas mixture until its clean, you can also use q-tips to clean out injector cups on the rail, make sure to remove any varnish or debris.

When to start a jeep in cold weather?

Will see if the remote start works when it warms to less than -10 tomorrow. (Sucks saying “when it warms to less than -10”) Started easily at -23 (wind chill around -50) by pressing the start button. Will see if the remote start works when it warms to less than -10 tomorrow.

Why does my Jeep WK2 run at 1300 rpm?

I just had to adjust the way I drive it at certain times. It mainly did it going up hill or at around 40 mph at 1300 rpms. Just like the WK2 guys with the 3.6 engine. They are experiencing something similar with having to adjust the way they drive due to lack if power and not so good tuning.

Why does my Jeep have a pulsing sound?

It also feelsl ike ive been getting less power in higer speeds. The car idles and drives perfectly at slower speeds but on the highway you can really feel the pulses and hear the exact making sounds. The only way to get the pulsing to stop is to give the jeep more gas.

What causes a Jeep Cherokee engine to overheat?

There are several belts that may cause overheating just by being loose or worn out. Similarly, hoses can deteriorate or become loose. Belts like the serpentine belt may wear out. When it wears out, your water pump will not be able to do its job if water cannot be pumped in to cool the engine and radiator.

What are the problems with my Jeep Grand Cherokee?

Problems with MY 4.7 L, V8 JEEP: 1. Torque converter problem. 2. Buildup inside the engine because the fluids aren’t flowing freely throughout, due to broken parts in engine. 3. Line pressure malfunctions 4. EVAP emission leak (well, of course!) 5. Rear right wheel speed and signal malfunction 6.

What causes check engine light on Jeep Grand Cherokee?

Heat from the exhaust vaporizes fuel inside the #3 fuel injector and causes the misfire. Installing an insulator sleeve normally lowers the temperature enough so the fuel will not vaporize. The average cost for a Jeep Grand Cherokee Check Engine Light Diagnosis & Testing is between $88 -$111. Learn More

What happens when the thermostat is stuck open on a Jeep Cherokee?

When the thermostat is stuck open, the vehicle will be getting too much coolant. On the other hand, if it is stuck in the closed position, the radiator will not be getting any coolant at all.

What to do when your Jeep Cherokee Idles rough?

Connector has a lock and is a bit tricky to work off. Also used carburetor cleaner to clean gunk off throttle body assembly. Gunk that went into intake manifold was digested by fuel injector cleaner that I placed in a full gas tank. Don’t use the cheap stuff if you want results. Purrs like a kitten now even with 115,000 miles on it.

What happens to my car on a cold start?

On a cold start, where the car has been sat for some time the car will crank and start straight away without any problem. It will rev up on start and settle down as normal. You can rev the engine hard and it is smooth as it should be and you can drive it as normal.

What kind of climate does a Jeep Laredo have?

2012 Jeep Grand Cherokee Laredo – AIR/HEAT dual climate issue! Help please!! | Jeep Garage – Jeep Forum 2012 Jeep Grand Cherokee Laredo – AIR/HEAT dual climate issue!

Why is my Jeep Grand Cherokee overheating?

Now the Jeep will not cool its self down. I replaced the thermostat cause the upper radiator hose was not getting warm. so now it is warm and still wants to overheat and push all the fluid from the radiator to the overflow bottle. The motor refuses to cool down the upper hose is now getting warm.

What kind of car is the Jeep Laredo?

I bought a 2012 Jeep Grand Cherokee Laredo…. 40K on it and love it. Wonder why I never got a Jeep before. Anyhow, long story short I need some help. I recently was driving turned on the AC with the weather near 90 degrees now. For some reason I noticed it wasn’t getting as cold though there was plenty of cold air blowing driver side….

Why is my Jeep Wrangler sputtering and losing acceleration?

I had about the same problem with my gals 93 Yj, it turned out to be a disconnected hose from the two roll over vent valves on the gas tank. If you take your gas cap off a few hours after driving and don’t get a hiss this could be your problem. Frank Could your fuel filter be bad? These voices in my head are giving me a headache….

Why is my Jeep Wrangler running so rich?

The only explanation I have is that one of the old O2 sensors was causing the jeep to run rich, dumping more fuel into the cylinders. Then, when I shut the jeep off, there ended up being left over fuel in the cylinders, basically a flooded condition.

Why does my Jeep make a pulsing sound when I idle?

The car idles and drives perfectly at slower speeds but on the highway you can really feel the pulses and hear the exact making sounds. The only way to get the pulsing to stop is to give the jeep more gas. It sounds to me like its a missfire somewhere along the engine due to the fact that the exhaust is making sounds from the pulsing.

Why does my car idle when it is warm?

When the cars idle gets rough, it hard to comprehend the related causes. It is because rough idle when warm can either be caused by one faulty component or through series of problems. Hence, after knowing the ways to troubleshoot rough idle when warm problem, anyone can now keep a check on their vehicle’s status.

Is there a problem with rough idle when warm up?

So, once there’re visible signs of rough idling, trouableshoot the problem without causing any further delay. As reported by Car From Japan experts, most Makes getting this engine rough idle after warm up are: Though the problem is not common but drivers of the Makes had their car serviced at garages for Rough Idle When Warm.

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