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Posted: 8/31/2015 8:58:28 AM EDT
My 2010 Jeep Commander has been running rough lately. Knew I needed to take it in, but didn't. This morning, check engine light came on. Not the flashing one of death, just solid. Pulled over, did key on/off thing, DTC error P0301 comes up. Just googled it, engine misfire/timing code. Called dealership, guy on other end is clueless, can't get me in until Thursday. It it dangrous to drive it around? I'm thinking not, how bad could an engine misfire be, right? I'm thinking all that will happen is shitty mileage and shitty power. But, then again, I registered in 2013.
Link Posted: 8/31/2015 9:00:04 AM EDT
Run it till she blows!
Link Posted: 8/31/2015 9:00:45 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By IchWarrior:
Run it till she blows!
View Quote

Link Posted: 8/31/2015 9:00:54 AM EDT
You will be fine. How many miles? Ever changed the plugs?
Link Posted: 8/31/2015 9:01:16 AM EDT
Gets really exciting when the misfire occurs late in the exhaust stroke instead of the compression stroke.
Link Posted: 8/31/2015 9:01:46 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Huskercoop:
You will be fine. How many miles? Ever changed the plugs?
View Quote


Original plugs, just a tad under 100k.
Link Posted: 8/31/2015 9:03:25 AM EDT
[Last Edit: 8/31/2015 9:04:02 AM EDT by Canoeguy]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Huskercoop:
You will be fine. How many miles? Ever changed the plugs?
View Quote


I agree. I would be checking for any obvious ignition problem i.e. plug wires and plugs.

ETA: change your plugs
Link Posted: 8/31/2015 9:04:00 AM EDT
Egads man!  



I never let my plugs go more than a couple years, maybe 3 at most.  Used to do them every year when I was only driving 1 vehicle.



Plugs or coils, if it was a crank or cam sensor, it'd be pretty non-functional.  
Link Posted: 8/31/2015 9:04:36 AM EDT

Is it back-firing? IE; loud BANG! occasionally, or just sputtering and spitting?

I'm not sure if that's a thing anymore or not, but detonation with either valve open, ( intake or exhaust ) can cause other issues.

Link Posted: 8/31/2015 9:06:01 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By RECONSIX:

Is it back-firing? IE; loud BANG! occasionally, or just sputtering and spitting?

I'm not sure if that's a thing anymore or not, but detonation with either valve open, ( intake or exhaust ) can cause other issues.

View Quote


Just sputtering. It's like it doesn't get enough gas from 0 to around 1500-2000 RPMs. Over 2000 RPM, it runs fine.
Link Posted: 8/31/2015 9:06:44 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By IchWarrior:
Run it till she blows!
View Quote



Posted Via AR15.Com Mobile
Link Posted: 8/31/2015 9:08:34 AM EDT
Engine misfires are fine until you have to replace the cat or the car burns down because the cat got too hot and burnt up.

Seriously, get it looked at and quit driving it, before you break something even more expensive. And next time, don't buy a Chrysler product.
Link Posted: 8/31/2015 9:09:14 AM EDT
[Last Edit: 8/31/2015 9:09:33 AM EDT by PikeSlayer]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By M82Assault:
Engine misfires are fine until you have to replace the cat or the car burns down because the cat got too hot and burnt up.

Seriously, get it looked at and quit driving it, before you break something even more expensive. And next time, don't buy a Chrysler product.
View Quote


At least I didn't buy a fourth Land Rover like I almost did
Link Posted: 8/31/2015 9:10:15 AM EDT
no, don't drive it get it fixed, the catalytic converter is going to load up with unburned fuel and become damaged, your bad coil or spark plug could get a LOT more expensive.


Discussion ForumsJump to Quoted PostQuote History
Originally Posted By hushpuppy:
Gets really exciting when the misfire occurs late in the exhaust stroke instead of the compression stroke.
View Quote



wat?

Link Posted: 8/31/2015 9:10:46 AM EDT
Theres an explosion occurring inside your engine at the wrong time.  What could go wrong ?
Link Posted: 8/31/2015 9:11:35 AM EDT
Mr sparky igniting mr fuel air mixture at the wrong time makes Senor engine very sad. Seriously ignition timing is nothing to f with get it fixed.
Link Posted: 8/31/2015 9:15:04 AM EDT
Not unsafe.  Misfires are common.  Clear the code and drive it.  If it comes back immediately then change the obvious items- plugs, wires, ignition coil.


Link Posted: 8/31/2015 9:17:40 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By abtex1:
Not unsafe.  Misfires are common.  Clear the code and drive it.  If it comes back immediately then change the obvious items- plugs, wires, ignition coil.

View Quote


At last, somebody telling me what I wanted to hear. Going to fix it, they just can't do it until Thursday. Live 12 miles from town, so it's kind of a long walk to not drive it until then.
Link Posted: 8/31/2015 9:18:17 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By M82Assault:
Engine misfires are fine until you have to replace the cat or the car burns down because the cat got too hot and burnt up[/img]
View Quote


Came here to post this. The raw fuel from the misfiring cylinder is heating up your catalytic converter. Those aren't cheap.

Link Posted: 8/31/2015 9:19:34 AM EDT
Find an independent mechanic and get it looked at today. Sounds like plug(s.) The dealer will screw you over six ways from Sunday.

Posted Via AR15.Com Mobile
Link Posted: 8/31/2015 9:27:38 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By rustypigeon:


Came here to post this. The raw fuel from the misfiring cylinder is heating up your catalytic converter. Those aren't cheap.

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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By rustypigeon:
Originally Posted By M82Assault:
Engine misfires are fine until you have to replace the cat or the car burns down because the cat got too hot and burnt up[/url]


Came here to post this. The raw fuel from the misfiring cylinder is heating up your catalytic converter. Those aren't cheap.



Cat delete... No inspections here! Heh

Posted Via AR15.Com Mobile
Link Posted: 8/31/2015 9:30:05 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By PikeSlayer:


Original plugs, just a tad under 100k.
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By PikeSlayer:
Originally Posted By Huskercoop:
You will be fine. How many miles? Ever changed the plugs?


Original plugs, just a tad under 100k.


Replace plugs and wires.

I prefer Bosch platinum +4 plugs.

Magnicore wires.

Then disconnect battery for 30 mins and try again (or reset codes with code puller).
Link Posted: 8/31/2015 9:31:23 AM EDT
[Last Edit: 8/31/2015 9:33:50 AM EDT by bjohnson425]
plugs

wires

rotor

dist cap



will be about $75 total and 45 minutes of your time


ETA: Also run a can of seafoam through it BEFORE you change your plugs. IT may smoke like a bitch for a few miles but that shit does wonders on old built up carbon.
Link Posted: 8/31/2015 9:32:46 AM EDT
My jeep did the same thing. Was the wires shorting. When it's dark, lift the hood with it running. Do you see a spark from the wire grounding to the engine?
Link Posted: 8/31/2015 9:34:08 AM EDT

Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Doppleganger871:


Egads man!  



I never let my plugs go more than a couple years, maybe 3 at most.  Used to do them every year when I was only driving 1 vehicle.



Plugs or coils, if it was a crank or cam sensor, it'd be pretty non-functional.  
View Quote
Plugs are good to go for 100K on most new cars, same for wires. So you put 100K a year on your car...that's some driving.

 
Link Posted: 8/31/2015 9:41:27 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Fairplay:
Plugs are good to go for 100K on most new cars, same for wires. So you put 100K a year on your car...that's some driving.  
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Fairplay:
Originally Posted By Doppleganger871:
Egads man!  

I never let my plugs go more than a couple years, maybe 3 at most.  Used to do them every year when I was only driving 1 vehicle.

Plugs or coils, if it was a crank or cam sensor, it'd be pretty non-functional.  
Plugs are good to go for 100K on most new cars, same for wires. So you put 100K a year on your car...that's some driving.  


Well, it IS a Jeep. My sister-in-law had a Commander that just went dead- EMP style- twice while she was driving it. Once on the highway. Screw that.

PikeSlayer, love your silver thread but a Chrysler product? C'mon...
Link Posted: 8/31/2015 9:43:35 AM EDT
Most likely be ok for a couple days.

On the other hand timing has the ability to completely wreck an engine, too. Like if your belt slips or breaks and you put a valve through a piston.
Link Posted: 8/31/2015 9:44:42 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By glklvr:


Well, it IS a Jeep. My sister-in-law had a Commander that just went dead- EMP style- twice while she was driving it. Once on the highway. Screw that.

PikeSlayer, love your silver thread but a Chrysler product? C'mon...
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By glklvr:
Originally Posted By Fairplay:
Originally Posted By Doppleganger871:
Egads man!  

I never let my plugs go more than a couple years, maybe 3 at most.  Used to do them every year when I was only driving 1 vehicle.

Plugs or coils, if it was a crank or cam sensor, it'd be pretty non-functional.  
Plugs are good to go for 100K on most new cars, same for wires. So you put 100K a year on your car...that's some driving.  


Well, it IS a Jeep. My sister-in-law had a Commander that just went dead- EMP style- twice while she was driving it. Once on the highway. Screw that.

PikeSlayer, love your silver thread but a Chrysler product? C'mon...


Red combined with Jeep = crank position sensor most likely.  I have one to replace right now, as a matter of fact.
Link Posted: 8/31/2015 9:47:11 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By bjohnson425:
plugs

wires

rotor

dist cap



will be about $75 total and 45 minutes of your time


ETA: Also run a can of seafoam through it BEFORE you change your plugs. IT may smoke like a bitch for a few miles but that shit does wonders on old built up carbon.
View Quote



Can you show me where the cap and rotor are on any engine made in the last 5 years?
Link Posted: 8/31/2015 9:47:55 AM EDT
Originally Posted By PikeSlayer:
My 2010 Jeep Commander has been running rough lately. Knew I needed to take it in, but didn't. This morning, check engine light came on. Not the flashing one of death, just solid. Pulled over, did key on/off thing, DTC error P0301 comes up. Just googled it, engine misfire/timing code. Called dealership, guy on other end is clueless, can't get me in until Thursday. It it dangrous to drive it around? I'm thinking not, how bad could an engine misfire be, right? I'm thinking all that will happen is shitty mileage and shitty power. But, then again, I registered in 2013.
View Quote



Troubleshooting vehicles isn't that hard a lot of times.  Aren't Jeeps notorious for bad camshaft timing sensors?  No other codes to help pinpoint your problem?  I would start with a basic tune up and go from there.
Link Posted: 8/31/2015 9:48:16 AM EDT
My check engine light came on about 6 years ago, figure on fixing it when I get a round to it.
Link Posted: 8/31/2015 9:48:29 AM EDT
You probably need new spark plugs.
Link Posted: 8/31/2015 9:49:51 AM EDT
Timing belt?





















Wife had her timing belt go out in her Chrysler product. Luckily, it decided to go out as soon as she parked her car at the apartment. Wouldn't turn over after that. Got it towed to a dealership and $900 later, it was working again.
Link Posted: 8/31/2015 9:58:29 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Huskercoop:
You will be fine. How many miles? Ever changed the plugs?
View Quote


Ever changed the plug wires?
Link Posted: 8/31/2015 10:00:15 AM EDT
Go get a rental and get it fixed. Same thing happened to the 2005 TrailBlazer my mom had.
Link Posted: 8/31/2015 10:00:32 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Doppleganger871:
Egads man!  

I never let my plugs go more than a couple years, maybe 3 at most.  Used to do them every year when I was only driving 1 vehicle.

Plugs or coils, if it was a crank or cam sensor, it'd be pretty non-functional.  
View Quote


Depends on plugs.  Lots of newer cars have platinum/iridium 100k plugs.  And yes they do last that long.  Regular old time copper or whatever plugs yes by all means change them often.
Link Posted: 8/31/2015 10:04:19 AM EDT
I've been driving my ford ranger for the last 60,000 miles that way.
Link Posted: 8/31/2015 10:11:39 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By PikeSlayer:


Just sputtering. It's like it doesn't get enough gas from 0 to around 1500-2000 RPMs. Over 2000 RPM, it runs fine.
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By PikeSlayer:
Originally Posted By RECONSIX:

Is it back-firing? IE; loud BANG! occasionally, or just sputtering and spitting?

I'm not sure if that's a thing anymore or not, but detonation with either valve open, ( intake or exhaust ) can cause other issues.



Just sputtering. It's like it doesn't get enough gas from 0 to around 1500-2000 RPMs. Over 2000 RPM, it runs fine.



Pop quiz hotshot, there's a misfire in your Jeep.  Once the Jeep goes above 2k rpm the engine is armed.  If the Jeep drops below 2k rpm, the Jeep blows up.  What do you do?  What do you do?
Link Posted: 8/31/2015 10:23:49 AM EDT

Discussion ForumsJump to Quoted PostQuote History
Originally Posted By PikeSlayer:
Just sputtering. It's like it doesn't get enough gas from 0 to around 1500-2000 RPMs. Over 2000 RPM, it runs fine.
View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By PikeSlayer:



Originally Posted By RECONSIX:



Is it back-firing? IE; loud BANG! occasionally, or just sputtering and spitting?



I'm not sure if that's a thing anymore or not, but detonation with either valve open, ( intake or exhaust ) can cause other issues.







Just sputtering. It's like it doesn't get enough gas from 0 to around 1500-2000 RPMs. Over 2000 RPM, it runs fine.




 
Is it kind of jerky if you accelerate fast under 30-40 mph?
Link Posted: 8/31/2015 10:45:04 AM EDT
Wash the engine
Link Posted: 8/31/2015 11:12:19 AM EDT
Could also be a bad resistor pack.
Link Posted: 8/31/2015 11:23:50 AM EDT
Ever change the fuel filter ? Seriously.
Link Posted: 8/31/2015 11:25:46 AM EDT
My '97 civic was throwing a misfire code when the headgasket failed.

Does the oil look like chocolate milk?
Link Posted: 8/31/2015 11:30:17 AM EDT
[Last Edit: 8/31/2015 11:39:12 AM EDT by PikeSlayer]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By brian4wd:
My '97 civic was throwing a misfire code when the headgasket failed.

Does the oil look like chocolate milk?
View Quote


Oil is fine, not jerky at all. It just acts like I'm not giving it enough gas up to 2,000 RPM. It sputters/wheezes. Going in Thursday at 8:00. I have to pick the kids up from school- no bus service today, so I don't have any choice but to drive it.
Link Posted: 8/31/2015 11:36:29 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Doppleganger871:
Egads man!  

I never let my plugs go more than a couple years, maybe 3 at most.  Used to do them every year when I was only driving 1 vehicle.

Plugs or coils, if it was a crank or cam sensor, it'd be pretty non-functional.  
View Quote


How many miles are you driving in a year? Changing them that often is a waste of time and money.
Link Posted: 8/31/2015 11:38:09 AM EDT
OP if it ends up being a coil you can likely replace all of them yourself for what a dealer will charge to troubleshoot and replace one.
Link Posted: 8/31/2015 11:47:23 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By M82Assault:
Engine misfires are fine until you have to replace the cat or the car burns down because the cat got too hot and burnt up.

Seriously, get it looked at and quit driving it, before you break something even more expensive. And next time, don't buy a Chrysler product.
View Quote



Right here.   Misfires will melt cats and cats are 'spensive.
Link Posted: 8/31/2015 12:05:31 PM EDT
PO301= cylinder 1 misfire.
Link Posted: 8/31/2015 12:06:32 PM EDT
Check your plugs and cables?
Link Posted: 8/31/2015 12:20:36 PM EDT
My bud has a Camry that was doing this. Turns out he had a bad coil pack that was preventing the plug from firing and just blowing unburned fuel out the tail pipe. Took about five minutes to swap it out.
Link Posted: 8/31/2015 12:31:12 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By PikeSlayer:


Original plugs, just a tad under 100k.
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By PikeSlayer:
Originally Posted By Huskercoop:
You will be fine. How many miles? Ever changed the plugs?


Original plugs, just a tad under 100k.



ROFL.

Cap, rotor, plugs, wires...it's time.
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