Hi guys

I have hemi 5.7L 2008 durango AWD.

I have weird sound when shifting from 1st to 2nd /3rd gear. The tick tick sound (similar to missing spark fire sound/knocking sound) starts & continues to 4th & 5th it goes off when press tow/haul or press gas pedal to down shift for quick acceleration. when i hard press pedal at start & all gears shifts in above 3000+ rpm. there is no sound. as soon as it come back to normal ride on 5th gear sound starts..continues in mds activated as well

major notice is low rpm & higher gear sound is there. Lower gear & high RPM (overdrive or quick accelration) no sound.

sound is not making any problem but just sound. I have replace all spark plugs & one of the coils & made sure that they are tighten well. it reduced the sound but not fully gone

appriciate yuor help. I love hemi & its heavy sounds but not this sound

 

THere are a few threads about this in the Ram (?) section. Type 'hemi tick' into the search function at the top of the page in the black menu bar,
FF

 

Hi alljust an update. I have noticed preciously. found that this misfire kind of sound increases is when MDS gets engaged. without MDS, its very minor..any advise now please

 

I have ported heads on my Hemi and it will make a rattling sound due to the valve lash interfering with the MDS system,
FF

 

you mean.. heads need to be open & valve lash needs to be adjusted????
can I do it myslef or must be from dealer?
BTW is there nay step by step instruction to fix it.
I have seen one thread talking about egr valve problem..can it be that?

 

I would do a full tune up and see if that helps. Replace the plugs, EGR valve and clean the throttle body,
FF

 

man I really appriciate you all for this great help. I am just need to learn & don't want to waist time with dealer unless there is real problem.
BTW today i tested by disconnecting the EGR VALVE & the sound was very minimal (1000% acceptable by me) but it won't engage the MDS. how can i make sure that EGR VALVE is causing the issue.. new one is cheap but not free to replace & test..

thanks

 

Shahz:

Glad to hear you are making some progress. I assume you are using the proper 5w20 oil that is required by the MDS system.

The EGR valves can cause a variety of driveability issues. I would replace the valve and gasket. I think you can do this yourself for less than $100.

Don

 

oil is 5w30 always changed by dealer. 30 is due to hot weather in saudi
ya its 63$ but is there a way to test egr. i yesterday serviced it from dealer.. its 50000km service. they checked but nothing found. as per them its injectors sound which i feel becos 4 injectors gets off in mds.

 

Hi all

I have replaced the egr valve with gasket. still the same, I should have recoreded the sound but could n't becos it only sounds when driving in idle noooooo sound. I was suspecting could it be fuel injector sound which some how increses when more fuel required. its a kind of gargling sound. I wish i could record it.