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Old 06-17-2013, 11:27 AM
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Angry 2008 Hemi Overland Stalling

So I have posted before, but was a little while ago.

Having an issue with my 2008 Overland Stalling out randomly. It only does it when foot is off gas, can be moving, backing, etc. Starts back up only when key is turned completely around in neutral. Does it about once a week, no codes or warnings other than genie lamp oil light.

So Far, between myself and the dealership under warrenty, we have replaced:

EGR, MAP, Cam, Crank, Trottle Body assembly, PCM (twice), PCV, wiring to PCM -one connector that according to dealership was "loose".

Still does it!

Any thoughts? Have always used Mobile 1 Full Synt. Oil, 5/20. Can bad plug(s) cause it to stall intermittantly?
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Old 06-17-2013, 06:55 PM
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Re: 2008 Hemi Overland Stalling

Quote:
Originally Posted by arnsnk View Post
So I have posted before, but was a little while ago.

Having an issue with my 2008 Overland Stalling out randomly. It only does it when foot is off gas, can be moving, backing, etc. Starts back up only when key is turned completely around in neutral. Does it about once a week, no codes or warnings other than genie lamp oil light.

So Far, between myself and the dealership under warrenty, we have replaced:

EGR, MAP, Cam, Crank, Trottle Body assembly, PCM (twice), PCV, wiring to PCM -one connector that according to dealership was "loose".

Still does it!

Any thoughts? Have always used Mobile 1 Full Synt. Oil, 5/20. Can bad plug(s) cause it to stall intermittantly?
There's a software update that fixes it. They fixed mine by updating the TCM module... It's in a thread on this site, have to search for it.
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Old 06-25-2013, 02:47 PM
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Re: 2008 Hemi Overland Stalling

before you use your WK as a boat anchor... i had the same problem and saw aon a 52 page thread on this site that if raise the wires that go across the engine over the coils to the transmission and other... tie them to the firewall and the problem just stops. i did it in november on my 07 WK with 83000 km and it has not stalled since. give it a try it doesn't cost anything just a couple of tie raps or even electrical tape. just remove the engine cover and tie things up. i used the stabilizer bar and the fire wall.
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Old 06-28-2013, 05:07 PM
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Re: 2008 Hemi Overland Stalling

I also have a 2008 Hemi Overland that would stall randomly. Raising the engine wiring harness away from the coils has worked for some people but it did not work for me. What did work for me was replacing all 8 coils and all 16 spark plugs with original Mopar spark plugs. The Hemi is very sensitive to spark plugs and may not run well with aftermarket plugs. When replacing the spark plugs get the Champions only from the dealer. Although you can purchase Champion plugs from an auto parts store that have the same model #, they are different than the ones you get from the dealer and may cause stalling.
Hope this helps.
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Old 06-30-2013, 05:29 PM
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Re: 2008 Hemi Overland Stalling

Quote:
Originally Posted by snooker View Post
I also have a 2008 Hemi Overland that would stall randomly. Raising the engine wiring harness away from the coils has worked for some people but it did not work for me. What did work for me was replacing all 8 coils and all 16 spark plugs with original Mopar spark plugs. The Hemi is very sensitive to spark plugs and may not run well with aftermarket plugs. When replacing the spark plugs get the Champions only from the dealer. Although you can purchase Champion plugs from an auto parts store that have the same model #, they are different than the ones you get from the dealer and may cause stalling.
Hope this helps.
What snooker said. The correct Champion 570's will have a dark top electrode connection, not silver as you are probably used to seeing. If your local parts store has these, they are OK. Mine did. MOPAR has a StarCase on this apparent difference, but we have not heard from Champion why this is so.

When you change plugs, add a small dab of dielectric gease to the inside of the rubber boot and the top electrode for ease of removal next time and a good electrical connection. Gap is 0.043" for the '08 WK 5.7L HEMI. Check each plug before installing, then torque to 12-15 ft-lb.

The tie-up is a band-aid fix, but not the root cause IMHO. Certainly can't hurt. Check your build date. For the '08 model year, seems to occur for WK's built in August 2007 or earlier. Mine is a SEPT 2007 build and has never done it.

Also, recommend you write a complaint to NTSB. Many others have done so. With enough complaints, maybe Jeep will be forced to resolve this issue formally. It affects '07 and early '08 5.7L HEMI's.
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