Join Date: Jun 2014
Own a Commander?: Yes
Model year: 2006
Trim Package: Limited
Power-Train: 5.7L V-8 Hemi
If 4WD - system: QD-II
Current Mileage: 113676
My name is Jacques and I am from Cape Town in South Africa
I recently bought my very first jeep - it is a 2007 Jeep Commander Ltd, 5.7l Hemi. It currently has 75,000 miles on the clock.
The vehicle looked to be in great condition inside and out, so I was thinking that it was a good buy. I drove for about 500miles and booked her in for a major service - ALL oils, spark plugs etc but after driving her for approx 500miles after the service, I noticed that:
1. When I accelerate quickly from a stop or when the car gears down from a higher speed, it would blow out a big "bubble" of smoke.
2. I also noticed a marked decrease in power.
3. The engine light came on, as well as the PERFORM SERVICE error message.
I took her back to the shop where I did the service and was informed that we would need to open her up and see what it is - I know that this can be expensive on a Hemi, so was just wondering if anyone else has had this problem....
My first thoughts will be wrong spark plugs (the Hemi's only like Champion plugs) and possibly wrong oil viscosity; Hemi's have to have 5w20, but can run 5w10. Anything thicker and it'll probably throw codes for your MDS not being able to work, but that won't have any affect on power decrease or performance. Neither of these things will cause smoke, though...is the smoke white or blueish?
Perform Service message is just a mileage timer that the shop didn't reset, basically just used to keep track of oil changes. You can reset this by going through the "STEP" menu until you get to Service Interval and then just hit "RESET".
The best way we can really help is if you pull the codes that have caused the engine light to come on. There is a key-dance procedure you can do to get the codes to come up in the dash, if you don't have a tuner/reader or a shop that'll do it for free: Turn the key from fully OFF to ON (not Start) 3 times, on the third time leave the key on and the dash will say DTC REPORT, then slowly list codes one at a time. The timing for turning the key is kinda picky, can't be too slow or too fast. Usually takes me about 10 attempts before I can finally get the timing right. Here's a video of how:
2006 Dark Khaki Limited, Hemi, QD-II w/ all the options.
Inertia Performance Heads, Full SRT 6.1 Valve Train, Custom Crower Cam, Double Roller Timing Set, Trend Performance forged Pushrods, High PSI Oil Pump, ARH Long Tube Headers and Mids, Borla Catback, aFe Stage 2 Intake, AEM X-Series WB UEGO & 100psi Oil Guages, PowerStop Drilled & Slotted Rotors, MDS On Light, Kenwood in-dash Nav, HID Projectors and full LED lighting upgrade
Still ironing out the tune, need to get it on a dyno....