LOST JEEPS :: View topic - Engine shaking, squeaky belt, code P0304 cylinder 4 misfire

Very concerned about my '05 CRD and looking for help

THE PROBLEM: In idle my engine is shaking pretty bad. When I accelerate in 1st gear the shaking decreases significantly and when I accelerate to 2nd gear and get going above 30 mph the shaking stops and I run smooth. There is also a squeaky noise in idle that sounds like a belt/pulley issue- this has been happening for a couple months and I have stupidly put off making the repair. I guess I haven't been super concerned because as soon as I accelerate the squeaking stops.

Because both problems are the worst in idle and seem to decrease when I accelerate I figure there is a link there. However, I do also have a check engine light with code P0304 (cylinder 4 misfire). That doesn't seem to have anything to do with the squeaking but could definitely be related to the engine shaking, right? But if cylinder 4 is misfiring and causing shaking, can someone explain why the shaking stops and I run smooth when I get up to speed?

Possibly worth mentioning is that I took it into a shop and they told me that my PCV (he also used the term "breather valve") was restricted and the vehicle was unable to breathe. To be honest, I don't know what he was talking about and a trusted source of mine suggested I don't let them work on it, so I didn't. The mechanic did not seem familiar with the CRD.

Ok, please give me some advice folks. What is most likely causing the squeaking and the shaking? and how does this relate to the cylinder 4 misfire?

THANK YOU!

Author:	justingrunow [ Thu Aug 06, 2015 9:26 pm ]
Post subject:	Engine shaking, squeaky belt, code P0304 cylinder 4 misfire
Very concerned about my '05 CRD and looking for help THE PROBLEM: In idle my engine is shaking pretty bad. When I accelerate in 1st gear the shaking decreases significantly and when I accelerate to 2nd gear and get going above 30 mph the shaking stops and I run smooth. There is also a squeaky noise in idle that sounds like a belt/pulley issue- this has been happening for a couple months and I have stupidly put off making the repair. I guess I haven't been super concerned because as soon as I accelerate the squeaking stops. Because both problems are the worst in idle and seem to decrease when I accelerate I figure there is a link there. However, I do also have a check engine light with code P0304 (cylinder 4 misfire). That doesn't seem to have anything to do with the squeaking but could definitely be related to the engine shaking, right? But if cylinder 4 is misfiring and causing shaking, can someone explain why the shaking stops and I run smooth when I get up to speed? Possibly worth mentioning is that I took it into a shop and they told me that my PCV (he also used the term "breather valve") was restricted and the vehicle was unable to breathe. To be honest, I don't know what he was talking about and a trusted source of mine suggested I don't let them work on it, so I didn't. The mechanic did not seem familiar with the CRD. Ok, please give me some advice folks. What is most likely causing the squeaking and the shaking? and how does this relate to the cylinder 4 misfire? THANK YOU!

Author:	pjigar [ Fri Aug 07, 2015 1:03 am ]
Post subject:	Re: Engine shaking, squeaky belt, code P0304 cylinder 4 misf
Squeaky belt could be due to some failed component in the belt loop, most likely in the serpentine belt loop. Alternator decoupler and idler pulleys are more likely. Hard to say anything without taking the fan shroud out. The low speed shaking also would point to a failed component on the belt loop. Does shaking pronounce when you put in forward and/or reverse? If yes then engine mounts are suspect. I am not sure about miss fire. Miss fire could be related to: injector, broken rockers, ? I think failed injector should through a code as well unless injector is blocked (highly unlikely).

Author:	flash7210 [ Fri Aug 07, 2015 7:06 am ]
Post subject:	Re: Engine shaking, squeaky belt, code P0304 cylinder 4 misf
Quote: However, I do also have a check engine light with code P0304 (cylinder 4 misfire) Try disconnecting and firmly reconnecting each of the four injector wiring connectors one at a time to see if the code goes away. A misfiring injector will cause a rough running engine.

Author:	papaindigo [ Fri Aug 07, 2015 12:54 pm ]
Post subject:	Re: Engine shaking, squeaky belt, code P0304 cylinder 4 misf
"Possibly worth mentioning is that I took it into a shop and they told me that my PCV (he also used the term "breather valve") was restricted and the vehicle was unable to breathe." Probably also wanted to sell you flibbit to fix your gerbil. The CRD has a CCV (crankcase vent valve - hockey puck looking thing on back of engine with hose running to air box to turbo hose just in front of turbo) which serves the same function as a PCV - vents pressure that builds up in the crankcase from piston ring blow by back into the intake. Failure to vent that pressure (back pre-late 1960s venting was straight to atmosphere) causes pressure to build up in crankcase and blow main seals. Look at serpentine belt tensioner down past air filter box - is it barely twitching or bouncing and pop plastic cover on alternator pulley cover and look for lots of crud/red dust. If bouncing and crud/red dust then your alternator decoupler pulley is shot.

Author:	LASSORUS [ Mon Aug 17, 2015 8:00 pm ]
Post subject:	Re: Engine shaking, squeaky belt, code P0304 cylinder 4 misf
I have a 2005 Liberty limited. The timing belt was replaced at 100K miles. Now, all of a sudden the engine is running a bit rough, a lot noisier, & I got up po301 cylinder 1 misfire code. Had it towed to a mechanic and they're telling me I might have some broken rocker arms, and he suspects the intake valve camshaft. He said this is a common problem with the CRD's. He says I'll need a CRD specialist, I thought he was one, should I start praying?

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Author:	rankom [ Mon Aug 17, 2015 8:19 pm ]
Post subject:	Re: Engine shaking, squeaky belt, code P0304 cylinder 4 misf
rocker is a big problem with crd engine ,,,, but fuel injector is also problematic , first check injectors , it is easy to do fuel returne flow , test, if ok , you need to disassembly top end to check cams and rockers,

Author:	geordi [ Mon Aug 17, 2015 10:05 pm ]
Post subject:	Re: Engine shaking, squeaky belt, code P0304 cylinder 4 misf
LASSORUS wrote: I have a 2005 Liberty limited. The timing belt was replaced at 100K miles. Now, all of a sudden the engine is running a bit rough, a lot noisier, & I got up po301 cylinder 1 misfire code. Had it towed to a mechanic and they're telling me I might have some broken rocker arms, and he suspects the intake valve camshaft. He said this is a common problem with the CRD's. He says I'll need a CRD specialist, I thought he was one, should I start praying? Where are you located? Cams are generally not damaged when rockers fail, those are the designed weak point to protect the rest of the valvetrain from damage from a bad timing job or other rocker failure. I am the CRD expert tech, and I travel around working on these. Maybe I can help you out.

Author:	LASSORUS [ Tue Aug 18, 2015 12:35 pm ]
Post subject:	Re: Engine shaking, squeaky belt, code P0304 cylinder 4 misf
I live in Westminster Colorado, a suburb of Denver. If you could come here and fix me up, I would greatly appreciate it. I can help as well, I've got some tools and a little bit of common sense.

Author:	LASSORUS [ Tue Aug 18, 2015 12:40 pm ]
Post subject:	Re: Engine shaking, squeaky belt, code P0304 cylinder 4 misf
Geordi, if the Savannah in your location refers to Georgia, you're pretty far away. They done kicked me out of hell, for selling ice cubes.

Author:	LASSORUS [ Wed Aug 19, 2015 11:33 am ]
Post subject:	Re: Engine shaking, squeaky belt, code P0304 cylinder 4 misf
Are there any roving CRD mechs near Denver? My Jeep needs help and I can"t find ANYONE who knows how to fix it

Author:	TKB4 [ Mon Sep 07, 2015 3:28 am ]
Post subject:	Re: Engine shaking, squeaky belt, code P0304 cylinder 4 misf
if you haven't repaired it yet I believe Sir Sam is in colorodo and he could probably point you to a knowledgeable mechanic

Author:	TKB4 [ Mon Sep 07, 2015 3:29 am ]
Post subject:	Re: Engine shaking, squeaky belt, code P0304 cylinder 4 misf
or you could look at the state by state list of trusted mechanics for one near you

Author:	thermorex [ Mon Sep 07, 2015 11:07 am ]
Post subject:	Re: Engine shaking, squeaky belt, code P0304 cylinder 4 misf
LASSORUS wrote: Are there any roving CRD mechs near Denver? My Jeep needs help and I can"t find ANYONE who knows how to fix it Sir Sam knows those engines and he lives in Colorado. But I believe he may be out of country right now. Another alternative is to talk to Geordi, and see if it's feasible to fly him over there to fix the jeep. I'd go with this, otherwise you'll have to bet with the fact that the mechanic you'll get the jeep to knows what is doing.

Author:	geordi [ Mon Sep 07, 2015 5:38 pm ]
Post subject:	Re: Engine shaking, squeaky belt, code P0304 cylinder 4 misf
justingrunow wrote: Very concerned about my '05 CRD and looking for help THE PROBLEM: In idle my engine is shaking pretty bad. When I accelerate in 1st gear the shaking decreases significantly and when I accelerate to 2nd gear and get going above 30 mph the shaking stops and I run smooth. There is also a squeaky noise in idle that sounds like a belt/pulley issue- this has been happening for a couple months and I have stupidly put off making the repair. I guess I haven't been super concerned because as soon as I accelerate the squeaking stops. Because both problems are the worst in idle and seem to decrease when I accelerate I figure there is a link there. However, I do also have a check engine light with code P0304 (cylinder 4 misfire). That doesn't seem to have anything to do with the squeaking but could definitely be related to the engine shaking, right? But if cylinder 4 is misfiring and causing shaking, can someone explain why the shaking stops and I run smooth when I get up to speed? Possibly worth mentioning is that I took it into a shop and they told me that my PCV (he also used the term "breather valve") was restricted and the vehicle was unable to breathe. To be honest, I don't know what he was talking about and a trusted source of mine suggested I don't let them work on it, so I didn't. The mechanic did not seem familiar with the CRD. Ok, please give me some advice folks. What is most likely causing the squeaking and the shaking? and how does this relate to the cylinder 4 misfire? THANK YOU! Justin, it sounds like your CRD is also in need of a rocker job. Where are you located? Maybe a combination trip can be worked out with Lassorus? For anyone thinking about major work like this - Yes, you will be asked to pay my travel expenses, but I am extremely good at projecting the travel costs, and I do try very hard to keep the costs down and reasonable. I don't take any profit on travel, it is actual expenses. But the biggest bonus: If there is more than one CRD as part of any given trip, the travel costs are split up so everyone pays less. I managed to do an 8000 mile trip last year with travel expenses capped at $400 per person, and this was DRIVING and all the way to the ocean in San Diego! Colorado is certainly on the list of potential destinations, don't risk your CRD with an unskilled mechanic or worse - an unskilled dealership!

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Author:	kidjedi [ Thu Oct 01, 2015 8:05 pm ]
Post subject:	Re: Engine shaking, squeaky belt, code P0304 cylinder 4 misf
geordi wrote: Justin, it sounds like your CRD is also in need of a rocker job. Where are you located? Maybe a combination trip can be worked out with Lassorus? Add me to the list! My 2006 CRD Sport is sounding like the OP's noises (rattling and chirping) and I'm not sure if there was a timing belt change done at 100k (previous owner did not know). I'm thinking I should just go ahead and do the timing belt (and everything else: water pump, seals, pulleys, thermostat, serpentine, etc.). Sir Sam (up in Ft. Collins) is super busy, so I was getting ready to resign myself to having to use the local dealer (Larry H. Miller Jeep --used to be ProJeep). Oddly enough, Larrorus and I live in the same place (Westminster). Kind of bizarre. Maybe a sign from the CRD gods? I will be bringing back another CRD (2005 Limited) from the Midwest next week, and I'm sure it'll be in need of some attention too. Would be great to set something up for all of us!