2004 1500 Hemi misfires and dies at idle?

[Evanp2005]

Just purchased a 2004 ram 1500 5.7 and the owner told me about this issue. Got it for a low price cause of this reason. When i start it up and let it sit at idle it throws the rpm’s up and down a bit then misfires around 600 for a little bit then dies. If I keep its rpm’s above 1200 it runs with no issues. Owner said it’s because of a bad ground to the ecm. It doesn’t have a check engine on though. Does that seem like the first thing I should investigate or should I look at other stuff first? I plan to clean up the throttle body and ignition coils anyway and change the air filter. Any advice is appreciated

 

[jws123]

First off check compression on all cylinders take a look at the plugs.

 

[Evanp2005]

First off check compression on all cylinders take a look at the plugs.

I’ll give it a try tomorrow afternoon and I’ll let you know what I see

 

[kevkev]

Next check for broken valve springs

 

[jws123]

Next check for broken valve springs

Thats another good thing to check for you gotta pull valve covers tho I forgot the 3rd gen hemis loved to snap springs.

 

[kevkev]

Another thing to check is probably new intake gaskets. Might be having a vacumn leak.

 

[shelby5041]

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